Uploaded September 2014 | Updated September 2026, 2 weeks ago
Menu items are used in almost every application you use. Some of the more well-known ones are the 'File' and 'Edit' menu items. Menu items can be similarly used in a MATLAB GUI, and this video shows how to program them.
Menu items are used in almost every application you use. Some of the more well-known ones are the 'File' and 'Edit' menu items. Menu items can be similarly used in a MATLAB GUI, and this video shows how to program them.
![Pitot-Static Error: Compressible vs. Incompressible
How do calculated velocities change from pitot-static measurements when we assume an incompressible versus a compressible flow? In this video, we will look at the differences between the two equations that can be used to calculate velocity from stagnation pressure, static pressure, and density. Then we will go through both a low speed and a high speed case to show how the calculated velocities differ.
NOTES
► This video only shows how velocities differ when making the assumption of incompressible versus compressible flow.
► Im assuming the only thing that changes between the two cases is the measured stagnation pressure (and that the measured static pressure and the density remains the same).
► A full discussion of how pitot-static tubes work is saved for another video.
RELATED VIDEOS
→ Stagnation-to-Static Relations
https://goo.gl/hBY2AV
→ Speed of Sound
https://goo.gl/hbRGfU
→ Sonic State
https://goo.gl/eou3aC
→ Isentropic Relations
https://goo.gl/mkdNHd
THUMBNAIL IMAGE
By User:Kolossos (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/) or CC BY-SA 2.5-2.0-1.0 (https://creativecommons.org/licenses/by-sa/2.5-2.0-1.0)], via Wikimedia Commons Pitot-Static Error: Compressible vs. Incompressible](https://i.ytimg.com/vi/iAJijLXZngw/mqdefault.jpg)

![Explained: Aligning Torque
Why does your steering wheel feel like it wants to straighten out when youre in a turn? In this video, Ill explain what aligning torque is, and where it comes from.
NOTES
► Im not including any mechanical trail in this description.
► The tire has no inclination angle/camber.
RELATED VIDEOS
→ Explained: Aligning Torque Simulation
https://goo.gl/NwVJjb
→ Explained: Tire Axis System
https://goo.gl/Q3w7Br
→ Explained: Tire Slip Angle
https://goo.gl/rjUcYG
THUMBNAIL IMAGE
By J.H. Sohn from Melbourne, Australia (2014 Australian F1 Grand Prix) [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons Explained: Aligning Torque](https://i.ytimg.com/vi/iN9j-ff2-co/mqdefault.jpg)
![Explained: NACA 4-Digit GUI Part 1/10 [MATLAB]
This is the first video in my 10-video series on coding a program in MATLAB to compute, display, and save a NACA 4-digit airfoil. The series starts right from the beginning, and we work our way to the final code. I explain everything I do, so it should be easy to follow.
IN THIS VIDEO:
We start by opening up a new graphical user interface by typing guide in the command window, and lay out our GUI buttons, boxes, etc. After saving the GUI, we format the resulting m-file for ease of coding in the subsequent videos.
If you havent watched my other videos on the NACA 4-digit airfoil series, I would recommend doing that now.
NACA 4-Digit Airfoil Theory
http://goo.gl/IMgb1W
NACA 4-Digit MATLAB Script
http://goo.gl/t0ksgp
IN THIS SERIES:
Part 1/10 : https://goo.gl/9UBgbo
Part 2/10 : https://goo.gl/jRRcYJ
Part 3/10 : https://www.youtube.com/watch?v=SbW1NDuvdJQ
Part 4/10 : https://goo.gl/HwHB39
Part 5/10 : https://goo.gl/AlDne8
Part 6/10 : https://goo.gl/7n1QP7
Part 7/10 : https://goo.gl/nTGleR
Part 8/10 : https://goo.gl/ez247P
Part 9/10 : https://goo.gl/8mXYcc
Part 10/10: https://goo.gl/ovBlbW
For the most up-to-date GUI, download the files from my GitHub account, linked to here:
https://github.com/jte0419/NACA_4_Digit_Airfoil Explained: NACA 4-Digit GUI Part 1/10 [MATLAB]](https://i.ytimg.com/vi/iQ1-C6c3YyA/mqdefault.jpg)

![Explained: Axes GUI [MATLAB]
Axes can be used to display data on a plot, or even to display an image. This video shows how to display a plot with data in a MATLAB GUI. Explained: Axes GUI [MATLAB]](https://i.ytimg.com/vi/imyF5QjJ5c8/mqdefault.jpg)



![Explained: Sonic State (Critical, Star)
Heres the next video in our quest to understand jet engine and rocket nozzles (among other things). We will be talking about the sonic state, which is also called the critical state or the star state.
These values are useful for determining whether flow through a nozzle is choked. If the nozzle is indeed choked, then the sonic state values (P*, rho*, T*, etc.) are the actual static quantities at the throat of the nozzle.
RELEVANT VIDEOS
→ Stagnation Relations
https://goo.gl/FMFUBA
→ Area-Mach Number Relation
https://goo.gl/Hp6uGQ
REFERENCES
► Notes by Matt MacLean
► Modern Compressible Flow, Anderson
► Elements of Gasdynamics, Liepmann and Roshko
► Gas Dynamics, Zucrow and Hoffman
THUMBNAIL
By Ad Meskens (Own work) [Attribution, GFDL (http://www.gnu.org/copyleft/fdl.html) or CC BY-SA 4.0-3.0-2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/4.0-3.0-2.5-2.0-1.0)], via Wikimedia Commons Explained: Sonic State (Critical, Star)](https://i.ytimg.com/vi/jnRudznUqDM/mqdefault.jpg)
![Explained: Waitbar [MATLAB]
A waitbar (or progress bar) allows you to visualize when a program will finish. The argument to the waitbar fills up the bar with the percentage specified. While its a fun way to see how long you have to wait until everything is done computing, it is extremely time consuming, and I would probably recommend just outputting data to the command window using fprintf. Explained: Waitbar [MATLAB]](https://i.ytimg.com/vi/k2wKPxRUPiE/mqdefault.jpg)