Aerodynamic Shape Optimization - Improving the Efficiency of the Aptera EV AirShaper 2022-06-16 | Learn more about aerodynamic shape optimization:youtu.be/cZAhPQFINZ8The Aptera is a solar powered electric vehicle which has been designed for efficiency from the very beginning. Solar powered cars only make sense if the energy captured from the sun is significant compared to the energy needs of the vehicle. The lower the energy consumption of the car per km (or mile), the further it will go on the same amount of energy from the sun.From the very beginning, the Aptera was shaped radically different, like a drop-shape on wheels. In the process, Aptera extensively used AirShaper to analyze multiple design iterations of the car. Additionally, as seen in this video, Aptera utilized the AirShaper Aerodynamic Shape Optimization functionality to let the algorithm automatically morph the car towards lower drag values.This methodology has also been applied to various other cases:- airshaper.com/cases/optimization- airshaper.com/research/from-scanned-cad-to-an-optimized-car-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Behind the Wheel: CEO Insights and Aerodynamics of the Solar-Powered Aptera AirShaper 2024-04-16 | For more information, visit airshaper.com and aptera.usFilmed October 2023.Dive into the future of sustainable transportation with our in-depth exploration of the Aptera, the solar-powered electric vehicle redefining aerodynamics and efficiency. Join us as we go behind the wheel for a test drive and gain exclusive insights from the CEO on how this groundbreaking vehicle is crafted to harness solar energy for unprecedented range and performance.In this video, you'll discover the unique design features that set the Aptera apart, from its ultra-lightweight structure to its advanced aerodynamics. We delve into the science that makes it possible for the Aptera to travel further with less energy, all powered by the sun.Whether you're a car enthusiast, an advocate for green technologies, or simply curious about the next big thing in automotive innovation, this video is your gateway to understanding how the Aptera is driving us towards a cleaner, more efficient future.Don't forget to like, subscribe, and share this video with others who dream of a sustainable automotive future. Leave your thoughts in the comments below, and let us know what other innovative technologies you’d like us to explore next!
Pikes Peak Aerodynamics Explained by Robin Shute - King of the Mountain AirShaper 2024-03-19 | Full length video: youtu.be/lcpEGBKqnvkRobin Shute has won Pikes Peak already 4 times at the time of this video. And aerodynamics play a crucial role in this, especially because it's not easy to generate downforce when the air gets thinner as you race up the hill.-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Pickup truck aerodynamics - how to increase range & efficiency AirShaper 2024-03-13 | See the full length video here: youtu.be/paTqyJpqoZI-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Startup Aerodynamics - Silicon Valley Telo Trucks shows its garage-built Electric Pickup Truck AirShaper 2024-03-12 | For more information, visit:airshaper.comtelotrucks.comTelo Trucks is a Silicon Valley based startup developing an all electric pickup truck with the cargo bed of a Ford F150 and the footprint of a 2-door Mini.Tackling the aerodynamics on a pickup truck is not easy. So in this video, Jason Marks & Forest North walk us through the challenges and solutions.Drag is composed of both the frontal area and the drag coefficient. They've already managed to bring down the frontal area from the 3.5m² of a Ford F150 to 2.5m² for the Telo Truck.In terms of drag coefficient, the main challenges will be to treat the airflow around the exposed front wheels and to guide the air coming off the passenger cabin (avoiding an unfavorable interaction with the cargo bed).-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Adding vortex generators to your car AirShaper 2024-03-05 | Full length video: youtu.be/MC6woj6tsQYVortex generators help to energize the boundary layer, drawing energy from the faster moving free stream air outside of it. This helps the boundary layer to stay attached for longer / further downstream on a curved surface.That is why you sometimes see them on airfoils (to delay stall at high angles of attack) or cars (ahead of strongly curved rear windows).-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Landing on the Moon - Inside NASAs Vertical Motion Simulator at the AMES Research Center AirShaper 2024-02-20 | For more information, visit:airshaper.comnasa.gov/amesnasa.gov/aeronautics/what-is-the-vertical-motion-simulatorIn this video, we got a personal tour at the NASA AMES Research Center. We sat inside the Vertical Motion Simulator, which was originally designed & build to train the pilots of the Space Shuttle for their landing.It can move 40 ft horizontally and 60 ft vertically and accelerate at up to 0.8 G. All this to allow for the simulation of different flight phases - take-off, cruise and landing.They have 5 different cabs, representing different types of aircraft & spacecraft. It is often used for Air Taxis and Urban Transportation Concepts these days, including eVTOLs (electric vertical take off and landing aircraft). They also have a cab to simulate landing on the moon and on Mars.Other than that, we got to see world's largest wind tunnel (with a 120x80 ft test section) and Hangar One, where they built the US Macon, an airship from the 1930s.A massive thanks to NASA for organizing this visit!-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
NASA X-planes - Inside NASAs research center at Edwards Air Force Base - with interview! AirShaper 2024-01-30 | For more information, visit:airshaper.comnasa.gov/armstrong/capabilities-facilities/aircraft-at-armstrong/x-planes-at-armstrong---We had the fortune to visit NASA's Armstrong Flight Research Center at the Edwards Air Force Base in the Mojave dessert. This place is home to the development of NASA's X-planes or experimental planes. This includes:- The Bell X1 - the first plane to break through the sound barrier at level flight- The Blackbird SR71 - capable of flying at Mach 3.5- The X15 - capable of flying at Mach 6.7and many more!After the initial introduction & tour by Sarah Mann, we interviewed Sean Clarke, Principal Investigator for X-57 Maxwell Electric Aircraft Research Platform.Despite the project being shut down, there are a ton of learnings for the eVTOL (electric Vertical Take Off and Landing) industry. They have modified the aerodynamics, worked with foldable propellers, distributed propulsion, designed their own battery system and so on.-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Shell Eco Marathon - Aerodynamics course at UCLA (University of California, Los Angeles) AirShaper 2024-01-09 | For more information, visitairshaper.comhttps://www.ucla.edu/shellecomarathon.comThis lecture covers:Basics of aerodynamics:- laminar versus turbulent flow- pressure drag and friction drag- drag coefficients- Reynolds number- Boundary layers- Flow separationBasics of CFD (computational fluid dynamics)- Modelling- Meshing & discretization- IterationBasics of wind tunnels:- Components (fan, diffuser, turning vanes, settling chamber, honey combs, screens, test section)- Blockage factor- Wall effects- Scaled model testing- Force measurements- PIV (particle image velocimetry)Discussion of the UCLA eco marathon design
How to break lap records - Race car aerodynamics with Robin Shute - Pikes Peak king of the mountain! AirShaper 2023-12-13 | For more information, visit airshaper.com and thesendyclub.comRobin Shute has won the Pikes Peak Hill Climb multiple times. He's using AirShaper to improve the aerodynamics of his car:- For the next Pikes Peak race- For race tracksAs the aerodynamics are quite different between Pikes Peak and race tracks, he ran a lot of simulations to tweak the downforce, aero balance and drag on this car.The result was a well balanced car, which correlated very well with the simulated behavior of AirShaper. Based on these modifications, Robin already broke the record at Streets of Willow, smashing it by 11 seconds.-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Tesla Cybertruck Aerodynamics - Production version updates AirShaper 2023-12-05 | For more information visit:- AirShaper: airshaper.com- Sample project: app.airshaper.com/projects/tesla-cybertruck-public-3d-model- Tesla: tesla.comIn this video, we analyzed the design changes on the Tesla Cybertruck since the first concept was launched. Earlier, we had used a public 3D model off the internet for a "quick & dirty" CFD analysis. However flawed that approach was, it did highlight both the pros and cons:- The base profile allows for very good pressure recovery and thus low drag- The sharp edges need careful execution to avoid excessive flow separation & drag (and noise)In this video, we used our old analysis and compared it to the design updates we spotted:- Air deflectors ahead of the front wheels- Rounded front bumper- Increased gap between upper & lower bumper- Flush headlights- Limited offset between roof and side windows- Windscreen wiper design-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
MotoGP Aerodynamics - Air intake and suspension covers - Dotto Creations AirShaper Aero Update 3 AirShaper 2023-11-21 | Improving MotoGP aerodynamics using CFD simulations - The Dotto Creations - AirShaper MotoGP Challenge - Aero Update 2dottocreations.comairshaper.comGeneral information: airshaper.com/motogp-aerodynamics-challengeAero update 2 (with wings on the bodywork): app.airshaper.com/projects/dotto-creations-airshaper-motogp-challenge-aero-update-2Aero update 3: app.airshaper.com/projects/dotto-creations-airshaper-motogp-challenge-aero-update-3For the third aero update, we had modified:- the tire cross section- aerodynamic cover of the front suspension- central air intake- tail sectionResults:- Less aerodynamic drag!- Slightly less downforce, but manageable- More attached flow on the bodywork----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com and dottocreations.com
Pressure Taps - Measuring Static Pressure AirShaper 2023-11-14 | For more information, visit www.airshaper.com
Aerodynamics - Flow Across a Flat Plate AirShaper 2023-11-07 | For more information, visit www.airshaper.com
Lowest Drag Coefficient in the World - The Chery Aero Concept AirShaper 2023-11-03 | Visit airshaper.com for more info on aerodynamics.The Chery aero concept claims a drag coefficient of just 0.168, which is significantly lower than the values of Tesla, Lucid which hover around 0.20.This is still a concept car, so it remains to be seen how it performs once it goes into production.Video credit: weibo.com/tv/show/1034:4962841434718256
Golf Ball Aerodynamics - Dimples, Boundary Layer and Reduced Drag AirShaper 2023-10-31 | For more information, visit www.airshaper.com
Wind Tunnels - Why Open Test Sections Are Used AirShaper 2023-10-24 | For more information, visit www.airshaper.com
CFD Automation - AirShaper course at San Diego State University AirShaper 2023-10-24 | For more information, visit www.airshaper.com
Aerodynamic Pressure Gradient, Separation & Reverse Flow AirShaper 2023-10-17 | For more information, visit www.airshaper.com
Wind Tunnels - Measuring Forces & Moments AirShaper 2023-10-10 | For more information, visit www.airshaper.com
Wind Tunnel Blockage Ratio Explained AirShaper 2023-10-03 | For more information, visit www.airshaper.com
Wind Tunnel Components Explained AirShaper 2023-09-26 | For more information, visit www.airshaper.com
MotoGP Aerodynamics - Helmet, fender, mud guards & wings - Dotto Creations AirShaper Aero Update 2 AirShaper 2023-08-09 | Improving MotoGP aerodynamics using CFD simulations - The Dotto Creations - AirShaper MotoGP Challenge - Aero Update 2General information: airshaper.com/motogp-aerodynamics-challengeReference simulation (with wings): app.airshaper.com/projects/dotto-creations-ai-7aff73Aero update 1: app.airshaper.com/projects/dotto-creations-ai-cf2d1aAero update 2 (with wings on the front wheel): app.airshaper.com/projects/dotto-creations-airshaper-motogp-challenge-aero-update-2-lower-wings-over-fenderFor the second aero update, we had modified:- the front fairing / wind screen: we aimed for a more horizontal exit angle by making the front face steeper- Changed the position of the lower wings to the front suspension- Deleted the rear wingResults:- Fender: the wake structure has improved around the fender & rider (more horizontal), but the wake is too wide now, causing extra drag.- Front mud guard: better flow attachment here, but the bolt which is sticking out is creating a lot of drag- Wings: these help a lot to clean up & direct the airflow around the legs & arms of the rider.Drag & downforce values can still be improved further, so we'll continue work for aero update 3!Join the challenge and drop your ideas on our reddit channel:reddit.com/r/airshaper----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com and dottocreations.com
OpenFOAM Workshop 2023 - AirShaper demo AirShaper 2023-07-27 | This video was recorded for & shown during the OpenFOAM workshop 2023 in Genova. It showcases the state of the art of AirShaper at that point in time.
Airfoil selection - symmetric & asymmetric airfoils, NACA profiles, aerodynamic stall and separation AirShaper 2023-07-25 | #aerodynamics #drones #cfd #meshing #modelling #simulation #airfoil #stallLearn about CFD simulations in 30 seconds!----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Airfoil selection for drones - Asymmetric versus symmetric airfoils AirShaper 2023-07-18 | #aerodynamics #drones #cfd #meshing #modelling #simulation #airfoil Learn about CFD simulations in 30 seconds!----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
MotoGP Aerodynamics - The Dotto Creations - AirShaper aerodynamic design challenge - Aero Update 1 AirShaper 2023-07-11 | Improving MotoGP aerodynamics using CFD simulations - The Dotto Creations - AirShaper MotoGP ChallengeGeneral information: airshaper.com/motogp-aerodynamics-challengeReference simulation (with wings): app.airshaper.com/projects/dotto-creations-ai-7aff73Aero update 1: app.airshaper.com/projects/dotto-creations-ai-cf2d1aFor our first aero update we implemented many changes at the same time:1. Improved helmet design2. Better curvature around the bottom radiator3. More rounded front, small spoiler in front of cooler4. Smoother fairing around the radiator5. Small "jump" to cover hands. 6. Small "jump" to cover shoulders7. foot support: remained unchanged8. Rear wing added9. Improvements to the mudguardInterestingly, the drag of the bike has gone up by 0.6%!Downforce has improved though by around 3%.Although that trade-off would be good on a track with many corners, we're now trying to reduce drag by cleaning up the flow at the front of the bike and by removing the rear wing. Once we've managed to do so, we'll focus on the "downstream" part of the bike to regain some of the downforce.Join the challenge and drop your ideas on our reddit channel:reddit.com/r/airshaper----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com and dottocreations.com
Computational Fluid Dynamics - Meshing explained AirShaper 2023-07-11 | #aerodynamics #meshing #cfd #meshing #modelling #simulationLearn about CFD meshing in 30 seconds!----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Computational Fluid Dynamics - Modeling, Discretization & Iteration AirShaper 2023-07-04 | #aerodynamics #cfd #meshing #modelling #simulationLearn about CFD simulations in 30 seconds!----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Aero Bites - What is aerodynamic drag? AirShaper 2023-05-16 | #aerodynamics #drag #cfdLearn about aerodynamic drag in 30 seconds!----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Formula One Aerodynamics - Final design AirShaper 2023-05-09 | #f1 #formula1 #aerodynamics Formula One - Aerodynamics update 4 - Rear wing designFor other aero updates:- Part 1: youtu.be/PgogIbld-Ko- Part 2: youtu.be/07ru0LfGl3c- Part 3: youtu.be/HXVBs7JgUis- Part 4: youtu.be/fPTmyrmEJn8In this aero update, we completely redesigned the rear wing of the car to make it compliant with the FIA Regulations! Or rather, Luca Padovani did this (with tips by Andro Rak). It has been incredible to see how two motivated people from the community have pulled this off.First, the design spaces as desribed by the FIA were drawn in 3D. Within those spaces, the new wing was then designed to be entirely legal.Then, Luca opted for 2 variations of the wing, featuring different beam wings:- Tandem: in this configuration, one element of the beam wing is located downstream of the other one. They work together, the downstream wing having the highest angle of attack to further kick up the air, just like the main wing having 2 elements.- Bi-plane: in this configuration, 2 beam wing elements are on top of each other. This allows for more "cross section" of air to be captured and kicked up. The tricky part is that if they are too close to each other, they may partially cancel each other out.Both wings performed significantly better than the previous (illegal) design, with 10% more downforce overall on the car! We did see a penalty in terms of drag as well, so it's not all for free. Still, on high downforce tracks, this wing would be a very good solution.Luca also redesigned parts of the suspension, the swan neck and even the wing attached to the rear wheels. It's been truly incredible to see how he implemented complex aerodynamic shapes into his 3D software.We much look forward to see him at work on the next challenge:MotoGP aerodynamics!----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Overland trucks - Increasing range through aerodynamics AirShaper 2023-03-20 | #overland #overlanding #cfd In this video we will cover the home-made Leviathan, an overland truck conceived & built by Jay Jarvie of @BuilderCreator .We start off by running an @AirShaper simulation on a regular, boxy overland truck. The drag coefficient of around 0.6 is quite bad, meaning it'll spend a lot of energy pushing the air away.The initial Leviathan design featured a Cd of 0.5, already a large improvement over the reference truck. Based on the simulation results, we discussed a number of tweaks to the vehicle which included:- Air deflectors at the front wheels- Less aggressive angles at the front "bumper"- Softer angles at the top rearThe result was a 4% reduction in drag, which came at hardly any increase in weight or cost. This goes to show that if you include aerodynamics early on in the design process, you can create gains which will benefit you throughout the lifetime of the product at very little to no cost!Thanks a million to Jay Jarvie - this really was a fun collaboration and we much look forward to seeing the final overland truck :)-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Formula One - Aerodynamics update 4 - Rear Wing Design AirShaper 2023-03-03 | #f1 #formula1 #aerodynamics Formula One - Aerodynamics update 4 - Rear wing designFor other aero updates:- Part 1: youtu.be/PgogIbld-Ko- Part 2: youtu.be/07ru0LfGl3c- Part 3: youtu.be/HXVBs7JgUisIn this Aero update we wanted to reduce the drag on the car, possibly sacrificing some of the downforce. Most importantly, we want to increase the Lift/Drag ratio (or actually downforce to drag ratio), meaning a more efficient aero design.The existing wing was a visual element, not optimized for aerodynamics, but still performed surprisingly well. But because it was a very aggressive one (high "exit" angle of attack for example) we saw some flow separation at the trailing edge as well as some problems around the side plates.The new design was entirely designed by Luca, who also took input from other community members into account. This new design now has actual airfoils, again gurneys, side plates which do not flow into the lower wing, etc.The results showed a 15% reduction in drag, at the cost of a 10% reduction in downforce - a reasonable trade-off. The flow around the rear wing is now much cleaner, with the following observations:- Far less separation of the airflow (less red clouds in this visualization)- Reduced low pressure area on the rear wheels due to proximity / shape of the rear wing- Reduced performance of the lower wing, so here we may need to optimize- Flow separation at the transition from the top wing (second element) to the side plate - this needs to be optimizedAnother observation was that there is quite a lot of flow separation around the rear suspension, which was shaped as an airfoil (including a gurney) but isn't working properly. As this one feeds air to the rear wing, we'll have a look at optimizing this one.----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Formula One - Aerodynamics update 3 - within the margin of CFD error AirShaper 2023-01-17 | #f1 #formula1 #aerodynamics Formula One - Aerodynamics update 3 - within the margin of CFD errorFor other aero updates:- Part 1: youtu.be/PgogIbld-Ko- Part 2: youtu.be/07ru0LfGl3c- Part 4: youtu.be/fPTmyrmEJn8In this Aero update we wanted to reduce the flow separation at the top of the side pods. The air had way too much upward momentum to stay attached to the sharply angled top edge of the side pod. So based on community feedback and internal brainstorms, the Voyager - AirShaper team came up with the following design changes:3a: Ferrari-inspired backward swept designThe goal here is to have the top & bottom edge of the sidepods sweep backward to alleviate some of the pressure towards the outside. In the results we can see that flow separation at the top has been much reduced, but now there is some flow separation at the sides, as we're directing flow there. Good news though, that flow separation area looks to be smaller in size.3b: Curved top geometry of the side podsThe goal here is simple: provide a more gradual, upward curvature at the top edge of the side pod for the air to stay attached to. We can see in the results that flow separation has been reduced, but not eliminated. Also, as the air curves around this geometry it speeds up more than before, futher lowering the pressure. This creates a suction effect which can cancel out some of the downforce generated elsewhere on the car.3c: wing profile to control the flowWe added a wing profile just above the top edge of the side pod to force the airflow to take a sharper corner around the edge and to stay attached. In the CFD results, we can see that separation is slightly reduced at the outer parts of the sidepods, but not at the inner parts (where the local angle of attack is probably more aggressive). So the solution has potential, but would require a lot more tweaking to potentially make it work.Coefficient analysisAll concepts score worse than Aero Update 2: they all have less downforce and all have more drag. So what is happening?Well, to get a very reliable averaged value, you need a lot of iterations. For normal design work, the length of the averaging window used at AirShaper (which keeps variations around max 1%) is enough. But for specific cases like this one, where we are looking at deltas of less than 1% in some cases, you would need to increase the length of the averaging window to get reliable drag coefficient and lift coefficient data.Still, we're able to obtain qualitative insights from these simulations, allowing us to make a pragmatic choice:we're going for the Ferrari design!Simulations:Original car: app.airshaper.com/projects/voyager-airshaper-adcc85Aero Package 1: app.airshaper.com/projects/voyager-airshaper-20adc9Aero Package 2: app.airshaper.com/projects/voyager-airshaper-4b4532Aero Update 3a: app.airshaper.com/projects/aero-update-3-conc-afd350Aero update 3b: app.airshaper.com/projects/aero-update-3-conc-845f3dAero update 3c: app.airshaper.com/projects/aero-update-3-conc-18fb76----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Formula One Aerodynamics Challenge - Part 2: side pods, underfloor, fences and more AirShaper 2022-12-13 | #f1 #formula1 #aerodynamicsFormula One Aerodynamics Challenge - Part 2: side pods, underfloor, fences and moreFor other aero updates:- Part 1: youtu.be/PgogIbld-Ko- Part 3: youtu.be/HXVBs7JgUis- Part 4: youtu.be/fPTmyrmEJn8Simulations:Original car: app.airshaper.com/projects/voyager-airshaper-adcc85Aero Package 1: app.airshaper.com/projects/voyager-airshaper-20adc9Aero Package 2: app.airshaper.com/projects/voyager-airshaper-4b4532In this video, we present the second set of aero updates to the Voyager-AirShaper F1 car.The redesign has been based on:- Input from the talented people who contributed to the AirShaper Reddit channel- Input from AirShaper (supported by aerodynamic shape optimization)We've focused on a number of areas:SIDEPODS- Bring them forward- Add more curvature at the front / less curvature at the rear to avoid separation at the rearSTRAKES- Bring the second fence to the top of the underfloor to reduce flow curvature- Reduce the exit angle of the inner fence- Make the first part of the fences curved and straighten them just before they bend outward, to aid vortex formationBIBThe BIB has been made sharper, to reduce the pressure build up.REAR WING- Single instead of double support arm- Modification of the swan neck to reduce flow separation at the suction sideOTHER- The mirrors have been mounted onto the sidepods, eliminating the lateral support beam- The profile of the Halo has been modifiedA MASSIVE THANKS TO ALL OF THOSE WHO CONTRIBUTED TO THIS AERO PACKAGEAnd a special thanks to the guys at Voyager for implementing all of the community suggestionsLinksGeneral: airshaper.com /// voyager.beF1 Challenge: airshaper.com/f1-aerodynamics-challengeReddit: reddit.com/r/airshaperContact: info@airshaper.com-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Improving F1 Aerodynamics using AirShaper CFD simulations - The Voyager-AirShaper F1 challenge AirShaper 2022-11-17 | #f1 #formula1 #aerodynamics Improving F1 Aerodynamics using AirShaper CFD simulations - The Voyager-AirShaper F1 challengeFor other aero updates:- Part 2: youtu.be/07ru0LfGl3c- Part 3: youtu.be/HXVBs7JgUis- Part 4: youtu.be/fPTmyrmEJn8UPDATE:we found a mistake in the simulation - the increase in downforce was 44% and not 64% - check the next video (on aero update 2) to learn more!Simulations:Original car: app.airshaper.com/projects/voyager-airshaper-adcc85Aero Package 1: app.airshaper.com/projects/voyager-airshaper-20adc9In this video, we present the first set of aero updates to the Voyager-AirShaper F1 car.The redesign has been based on:- Input from the talented people who contributed to the AirShaper Reddit channel- Input from AirShaper (supported by aerodynamic shape optimization)We've focused on a number of areas:FRONT WING- We implemented the design of Busor to have a more updated design- The spacing between the wing elements was increased to avoid mesh bridging- The sideplates were pushed inward at the front to reduce flow separationThe downforce on the front wing improved dramatically, with low pressure zones on the suction side being much more pronounced, now extending to the second and partially the third wing element.STRAKES- The thickness of the straks was reduced to avoind local flow separation- The "inlet angle" of the strakes was increased, to point more inward.- The "outlet angle" of the straks was increased as well, to be outward instead of parallel to the driving direction of the car.The result is less flow separation at the inleg and stronger vortices further downstream, resulting in a lower pressure and thus more pronounced suction effect across the majority of the underfloor.BIBThe bib (sort of a scoop around the central part of the underfloor) was added, grabbing some extra downforce (as the pressure on top of it pushes it downward - even though some of this is cancelled out as this higher pressure also acts on the surface above the BIB).OTHEROther small changes include updated barge boards and a different nose angle.A MASSIVE THANKS TO ALL OF THOSE WHO CONTRIBUTED TO THIS AERO PACKAGEAnd a special thanks to the guys at Voyager for implementing all of the community suggestionsLinksGeneral: airshaper.com /// voyager.beF1 Challenge: airshaper.com/f1-aerodynamics-challengeReddit: reddit.com/r/airshaperContact: info@airshaper.com-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
7X Design Rayo - How to design a 300 mph hypercar based on a Lamborghini Huracan AirShaper 2022-10-11 | #lamborghini #aerodynamics #supercars 7X Design Rayo - How to design a 300 mph hypercar based on a Lamborghini HuracanFor more information on sports car aerodynamics:- Gordon Murray T50: youtu.be/FSaI6STYIQA- Lotus Evija: youtu.be/WaLxG9CT3RI- Porsche Taycan - part 1: youtu.be/K2jgsgihZ_w- Porsche Taycan - part 2: youtu.be/kyHjWGnrByQHave you ever wondered how hypercars can reach incredible top speeds? Because of aerodynamics! (and engine power :) ).At high speeds, almost all resistance the car has to overcome stems from aerodynamic drag. So reducing it, while maintaining a good aerodynamic balance, is the key.In this video, we walk around the 7X Design Rayo, a highly modified Lamborghini Huracan. The car was almost entirely rebodied, with highly streamlined shapes. We reduced the drag by over 28%!There are a lot of aerodynamic elements on the car that made this possible:- Extended & revised front splitter: guiding more high speed air underneath the car to create downforce through the Bernoulli effect- Front air curtains: accelerating air to form a curtain alongside the wheels, reducing their drag- Nearly flat underfloor to allow the flow underneath the car to accelerate as much as possible- Ventilation of the front & rear wheel arches- Revised position of the side air intakes- Diffuser optimization: reduction of rear wheel wake disturbance, wider & more organic shape to maintain attached flow- Open rear grill to aid coolingFor more information, visit:- https://7x.design/- envisagegroupltd.com- adrianoraeli.com- undergroundracing.com-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Rivian R1T Aerodynamics - Is the claimed drag coefficient of 0.30 correct? AirShaper 2022-09-20 | #rivian #aerodynamics #cfd Rivian R1T Aerodynamics - Is the claimed drag coefficient of 0.30 correct?Learn more about CFD simulations: youtu.be/dyiREvdc4GgRivian claims a drag coefficient of just 0.30 for the Rivian R1T. That's much lower than the typical 0.45-0.50 for cars like the Ford F150 and alike.In this video, we'll goo over the details of how they did this.---Smooth underfloor---On a conventional ICE (internal combustion engine) truck, many of the drive train components are exposed. This creates quite a lot of aerodynamic resistance as the air flows underneath the car. On the Rivian, they have covered almost the entire underfloor with flat, smooth panels. This greatly reduces the turbulence & drag generated.---Smooth exterior---Door handles have been made flush and the design in general doesn't feature many external bits of geometry sticking out. This helps to keep the flow attached to the surface.---Air deflectors---Ahead of both the front & rear wheels, air deflectors help to guide the air around the tires, reducing the "head on collision" of the air on the tires. They likely also help to bridge the wheel well area.---Air curtain---Inside the front bumper, air gets accelerated through channels which exit in the front wheel wells. This stream of air acts as an air curtain, shielding the rotating wheels. This reduces the drag generated by the wheels, which typically act as large mixers.---Air breathers---A slot/channel connects the rear of the front wheel wells to an open channel at the bottom of the door panels. This helps to evacuate some of the high pressure air in the wheel wells and provides a stream of air that ends up at the rear wheels.---Cabin spoiler---The spoiler at the cabin helps to "contract" the flow both in top view and side view. The flow lands onto the closed cargo bed, ahead of the trailing edge of the cargo bay. The spoiler also features slots which help to accelerate the flow / draw more air downward into the wake.---Gaps---At the top of the right A-pillar we detected more turbulence than the same area at the left A-pillar. Upon closer inspection, we found that there actually was a misalignment of panels, causing this flow problem.A massive thanks to A2MAC1 (a2mac1.com) for providing us with the 3D scan of the Rivian R1T. Just contact us if you want to purchase this or another analysis using their 3D scans.-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Top Gun Maverick Aerodynamics - Our Top Scenes Analyzed AirShaper 2022-08-16 | #topgun #aerodynamics #tomcruise Top Gun Maverick Aerodynamics - Our Top Scenes AnalyzedLearn more about airplane aerodynamics: youtu.be/2W5Q2mllmxIIn this video we go over some of the coolest scenes of the Top Gun Maverick movie which include aerodynamics effects.The first one is about the Dark Star, the plane in which Maverick is going for Mach 10. The plane itself is supercool and was conceptualized together with Lockheed Martin. But I was left with one question: when he is at around Mach 9, he makes a turn! Why would you make a turn when you are going for a top speed record? That would result in massive G-forces on both the plane and the pilot, only to generate extra drag and slow it down. Perhaps I am missing something, perhaps they did the same with the X-15 back in the days, but it felt like a dragster taking a corner.The next scenes involve the F18, a fairly dated fighter jet used by the Top Gun pilots in this movie. One is where Maverick pulls up from low level flight. Pulling up like this creates massive vortices which are nicely captured by the dust on the ground.Another scene is where the pilots are speeding up, breaking the sound barrier at Mach 1. You can hear the sonic boom and you can also visually see the planes going through some sort of white disc - or a vapor cone as they call it. It has long been thought that this cone was the actual sound barrier, but it is not. The air is first compressed and heated up by the first shockwave. Behind the shockwave is the expansion wave, lowering the pressure again. If there is enough humidity, the water vapor will condense and form the white cone you can see. After that, the air is compressed again by a second shock wave, eliminating the vapor.And then there is the famous Cobra maneuver, or dynamic deceleration. If you are being chased by the enemy, you can abruptly raise the nose of the plane to a more or less vertical position. At such an extreme angle of attack, the plane momentarily goes into stall and will act like an air brake, slowing it down. After the chasing airplane has passed underneath you, you pull the noise back down and resume level flight, only now you are in the chasing position. A final remark relates to motorbikes, one of our favorite areas of development. As you may know, the rider on a motorbike creates a large wake behind him, dragging air along. Filling that void with something that is slightly smaller than the rider itself and is closely attached to it to maintain a nice flow can help to reduce the wake, boost efficiency and reduce fuel consumption. So when taking Penny for a ride on the back of his motorcycle, Maverick was probably thinking of the environment.-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Electric Aviation - NASA interview on Maxwell X57 - Part 4: Electric Flight Experience AirShaper 2022-07-12 | Parts in the NASA interview series:- Part 1 - New aerodynamic concepts: youtu.be/m4rysu8LlLM- Part 2 - Propeller design: youtu.be/UDZBqDQGU8o- Part 3 - Battery and component cooling: youtu.be/ieB541felas- Part 4 - Electric flight experience: youtu.be/pGn07UTVKBgIn this fourth part of our video interview series with NASA on the X-57 Maxwell Electric Aircraft, we discuss what it will be like to fly this electric aircraft.The high lift propellers provide extra lift for the wing, but they also produce forward thrust. This can feel a bit strange and therefore multiple control modes have been introduced.One of them is called Air Speed Sending: as the aircraft speeds up, the high lift propellers provide more thrust and lift for take-off. Once the velocity is high enough for the wing to produce enough lift on its own, the torque on the high lift propellers is reduced again. Finally, they are shut down and folded back all together when the airplane is in cruise mode.The other way around, as the aircraft is preparing for landing, they are first switched on at a low torque & rpm, just to know they are there. As the airplane slows down on the approach corridor, the torque is increased and more lift and thrust are generated. This increased lift helps to limit the sink rate and the extra thrust can help offset the increased drag as the airplane slows down to regions within the backside of the power curve.In terms of scaling, the batteries don't scale so well. So this technology, using batteries, could be interesting for 10-19 seaters for example. Beyond that, the energy storage can become a problem. But the electric propulsion itself does scale well, as you can simply put more high lift propellers on a larger wing, on top of increasing their size, combined with a hybrid powertrain.You would then not have the energy efficiency benefits of the battery, but the aerodynamic benefits of the electric propulsion are still there.-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
AirShaper feature update event - 08:00am Pacific Time AirShaper 2022-06-22 | In this online event, we highlight all the new features recently added to AirShaper. Rotating elements, adaptive mesh refinements, aerodynamic shape optimization and much more!Links mentioned in the video:airshaper.com/videosairshaper.com/researchairshaper.com/blog/open-source-adaptive-mesh-refinementairshaper.com/pricing#pricingcloud.google.com/blog/products/compute/introducing-compute-optimized-vms-on-amd-epyc-milanamd.com/en/case-studies/airshaper
AirShaper feature update event - 10:00am Central European Time AirShaper 2022-06-21 | Register here: app.airshaper.com/rsvps/newIn this online event, we highlight all of the new features recently added to AirShaper. Rotating elements, adaptive mesh refinements, aerodynamic shape optimization and much more!
Electric Aviation - NASA interview on Maxwell X57 - Part 3: Battery and Component Cooling Design AirShaper 2022-05-24 | Parts in the NASA interview series:- Part 1 - New aerodynamic concepts: youtu.be/m4rysu8LlLM- Part 2 - Propeller design: youtu.be/UDZBqDQGU8o- Part 3 - Battery and component cooling: youtu.be/ieB541felas- Part 4 - Electric flight experience: youtu.be/pGn07UTVKBgIn this third part of our video interview series with NASA on the X-57 Maxwell Electric Aircraft, we dive into the details of cooling.The X-57 requires around 90-100 kW in cruise versus 250 kW during take-off. This variation in loading strongly determines the sizing, the cells, the layout etc. of the battery.Everything is directly air cooled on the airplane. The battery is passively cooled. The cooling of the inverters and motors poses quite a big challenge. They reach their operating temperature within seconds, so it's important to minimize the amount of rejected heat as well as understanding the cooling requirements across the flight envelope.-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Electric Aviation - NASA interview on Maxwell X57 - Part 2: Propeller Design AirShaper 2022-05-03 | Parts in the NASA interview series:- Part 1 - New aerodynamic concepts: youtu.be/m4rysu8LlLM- Part 2 - Propeller design: youtu.be/UDZBqDQGU8o- Part 3 - Battery and component cooling: youtu.be/ieB541felas- Part 4 - Electric flight experience: youtu.be/pGn07UTVKBgIn this second video in our series with NASA, we dive into the details of the propellers and how they compare to other propellers seen on e-VTOLs for example.The X57 features two very distinct propellers:- High lift propellers: these increase the local airflow speed around the wing, providing it with more lift. They aim for a uniform flow velocity to create a predictable and reliable increase in lift.- Cruise propellers: these are aimed at maximum efficiency and feature a higher axial flow speed at the tips of the propellers-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Lightyear One - Solar Electric Vehicle - Walkaround & interview AirShaper 2022-04-05 | Learn more about the design of the Lightyear One:youtu.be/TKHjyC_L0OMIn this video, we walk around the Lightyear One solar car to analyze its aerodynamic features (it has a drag coefficient below 0.20!).We also interview Tom Selten, the Chief Business Development Officer of Lightyear. He was the team manager of the winning Eindhoven solar race team in 2015. They raced Stella Lux, which was a family car for 4 people which triggered the Lightyear adventure.-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Electric Aviation - NASA interview on Maxwell X57 - Part 1: New Aerodynamic Concepts AirShaper 2022-03-01 | Parts in the NASA interview series:- Part 1 - New aerodynamic concepts: youtu.be/m4rysu8LlLM- Part 2 - Propeller design: youtu.be/UDZBqDQGU8o- Part 3 - Battery and component cooling: youtu.be/ieB541felas- Part 4 - Electric flight experience: youtu.be/pGn07UTVKBgIn this first out of 4 videos on our interview with NASA, we discuss the basic layout of this novel electric aircraft.The X-57 is the latest in the famous series of X-planes developed by NASA - their experimental aircraft like the X15.Sean Clarke and Nick Borer give their take on the design of this aircraft. We discuss the benefits if distributed electric propulsion, especially in terms of new aerodynamic concepts that are being made possible.-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
F1 in schools - Aerodynamics AirShaper 2022-02-01 | To learn more about CFD simulations: youtu.be/dyiREvdc4GgF1 in schools STEM challenge is a global competition in which students can design miniature F1 cars to race in straight lines. The cars are propelled by CO2 cartridges.In this video, the Redline Racing team of the Parramatta Marist High School in Sydney explains how the competition works and how they used AirShaper to optimize their design.To apply for the "AirShaper F1 In Schools" package and improve your F1 in schools car design, please visit:airshaper.com/f1-in-schools-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
How to model Rotating Elements in CFD (computational fluid dynamics) using MRF, AMI and more AirShaper 2022-01-12 | To learn more about CFD simulations: youtu.be/dyiREvdc4GgRotating Wall Boundary ConditionThe simplest form is the rotating wall boundary condition. Without rotation, the velocity of the airflow is always zero at the surface because of the no slip condition. The rotating wall boundary condition simply enforces a tangential velocity onto the surface of the rotating object. This velocity is equal to the distance from the center multiplied by the rotational velocity. The further you move away from the center, the higher the velocity.This technique is very simple and doesn’t significantly change the cost of computation, as no extra equations are introduced and the flow can be solved in a steady state manner. It’s very suitable on surfaces that are tangential to the local direction of rotation.At AirShaper, we chose this technique to take the rotating wheels of cars into account, as it’s a very robust solution. When you click a tire, the axis of rotation will be detected automatically, the components inside will be selected as well and the rotational velocity is automatically linked to the driving speed of the vehicleMRF – Multiple Reference FrameFor more complex geometries with a lot of non-tangential surfaces, the more advanced MRF technique can be used. It stands for multiple reference frames. In essence, you create a separate region around the rotating object. Inside this region, for each point, you calculate the relative velocity, which is a combination of the absolute velocity and the rotational velocity.The Navier-Stokes flow equations are then built on top of this relative velocity, which results in extra terms that take the Coriolis and centrifugal forces into account. So, you end up with a set of equations for the stationary region and another set for the rotating region.This method is a bit more expensive in terms of computational cost, but still allows for steady-state calculations and it’s able to accurately capture the “instantaneous” flow pattern around a propeller for example.At AirShaper, we chose to use this technique when adding rotating propellers to a simulation. When selecting a propeller, the central axis will automatically be detected. The direction of rotation can be flipped and the RPM can be set by the user. And it is possible to add multiple propellers to a single simulation AMI – Arbitrary Mesh InterfaceThis instantaneous flow, however, can depend heavily on the relative position of the rotating part versus the static part, like a propeller versus a strut. So, for very advanced simulations, there’s also the AMI technique, which stands for arbitrary mesh interface. In this technique, the mesh around the rotating object is actually cut and then made to rotate. This can only be done using transient simulations, as the rotation of the mesh is now linked to the actual time step. At the sliding mesh interface, the cells of the stationary and rotating mesh exchange information on the flow.This technique is usually the most accurate, but also very demanding in terms of computational effort. It can also be challenging in terms of stability, as the mesh interface needs to be defined very well. This type of simulation usually requires a manual approach.-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
Tidal Stream Turbines - Renewable Energy from the Tides AirShaper 2021-11-30 | Check out Fluid Mechanics 101:youtube.com/channel/UCcqQi9LT0ETkRoUu8eYaEkgOn Aidan's channel, you can also find the uncut, full length video of this interview:youtu.be/Ntl15C2KXCQ----------------------------------------------------------------------------------------For this video, we interviewed Aidan Wimshurst, who did his PhD at Oxford University (United Kingdom) on Tital Power Generation.ConceptTidal currents originate because of the tides: as water levels change, water flows from one area to another. When the water needs to fit through a narrow channel or move around certain coastlines, flow speeds can be quite high. These streams are very predictable, which makes it much easier to integrate the energy they produce into the grid.The general idea is to take a typical 3-bladed wind turbine and put it under water. But there are a number of key differences to wind turbines that make tidal turbines unique.Wing tip vortexOn an airplane, the air at the high pressure location below the wing wants to move to the low pressure location at the top of the wing via the side (the wing tip). This creates a curling motion called wing tip vortex.On a turbine, this vortex also exists but it leaves a spiral trace instead of a linear one. And this increased vorticity & turbulence can impact turbines further downstream. It also represents efficiency losses for the turbine itself, which is why some (wind turbine) blades are equipped with winglets.CavitationIf pressure is reduced below the vapor pressure, you will start getting bubbles. When these implode, they can cause serious damage to the blades, structure, and so on. The risk of cavitation is reduced when the hydrostatic pressure is high, close to the sea bed. But close to the surface, this hydrostatic pressure is much lower, increasing the risk of cavitation. So the risk of cavitation varies along a single revolution.Farm layoutsFor a given plot of land, the goal is to maximize energy and thus put as many turbines as possible in place. But if you put them too close to each other, the turbulent wake of one turbine will lower the efficiency and lifetime expectancy of other turbines, so there is an optimum to be found.With tidal energy, the orientation of the flow is always the same, only changing direction between tides. So these are typically placed in an array. The flow around a turbine is accelerated, meaning that a turbine placed in this accelerated flow will yield more power, ánd the original turbine will also perform better. This is called constructive interference. This will be analyzed in the MeyGen project.Size trendsCompared to wind turbines, the constraints are different for tidal energy. The water depth is typically between 20 and 50 meter, so that limits the rotor size. Also, the velocity shear (difference between the velocity at the bottom and free water surface) poses strong bending loads on the rotor.Suitable sitesTidal energy will never be able to provide the full energy demand of a country, but it can provide a valuable contribution. And it's also very useful for remote sites, which are typically islands, as they have difficult access to other sources of energy.-----------------------------------------------------------------------------------------------------------The AirShaper videos cover the basics of aerodynamics (aerodynamic drag, drag & lift coefficients, boundary layer theory, flow separation, reynolds number...), simulation aspects (computational fluid dynamics, CFD meshing, ...) and aerodynamic testing (wind tunnel testing, flow visualization, ...).We then use those basics to explain the aerodynamics of (race) cars (aerodynamic efficiency of electric vehicles, aerodynamic drag, downforce, aero maps, formula one aerodynamics, ...), drones and airplanes (propellers, airfoils, electric aviation, eVTOLS, ...), motorcycles (wind buffeting, motogp aerodynamics, ...) and more!For more information, visit www.airshaper.com
