Scott Manley
SpaceXs Massive Rocket Explodes Due to Rapid Unscheduled Digging
updated
Carefully keeping clear of the TFRs I flew past it to appreciate the size of this massive event, the largest this year, and one of the largest in California's history.
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Moreover, NASA is contractually required to pay Astrobotic to fly a NASA payload to the moon, so they have to pay for this anyway.
Instead of a rover NASA will send ballast to the moon.
And the worst part is this is triggered by a cost increase to NASA due to the lander being delayed.
nasa.gov/news-release/nasa-ends-viper-project-continues-moon-exploration
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Falcon 9 is the biggest surprise, and has the potential to make a big impact on launch schedules since so many payloads depend on it. But it may be allowed to return to flight given its long string of successful launches.
Elsewhere, 15 year old Radar data is used to show that a big hole in the moon may lead to lava tubes. Kazakhstan signs up for China's lunar base and all the small rocket companies show off new rocket engines being tested.
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This is the first SpaceX launch failure in over 300 launches, a record that nobody else in the launch business can claim.
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So even though the second stage had some problems Europe is no doubt happy to have made this launch happen.
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There are 3 main classes - ResistoJets with a heating element, ArcJets which generate an electric arc and use it to heat the propellent, and Inductive Heating using electromagnetic waves to heat a plasma without electrodes.
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Due to an engineering failure the rocket broke free of the test stand, flew under power for about 30 seconds before crashing back to Earth in a spectacular fireball.
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China Returns From Far Side of Moon
Firefly reveal new launch sites.
SpaceX slaps its booster.
Dreamchaser will have to wait until 2025.
ISS destruction duty to SpaceX
Collins Aerospace gets out of the space suit business.
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Find out more at NASA Ames official Arcjet site.
nasa.gov/ames/arcjet-complex
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However, engineers have come up with new control algorithms to allow operation with fewer gyroscopes, and this is what I want to explain.
NASA's explanation of the process
science.nasa.gov/mission/hubble/observatory/design/hubble-one-gyro-mode
The scientific paper on these new control laws:
HUBBLE SPACE TELESCOPE REDUCED-GYRO CONTROL LAW
DESIGN, IMPLEMENTATION, AND ON-ORBIT PERFORMANCE
ntrs.nasa.gov/api/citations/20080023344/downloads/20080023344.pdf
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And thats still not all the big stories
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There were a few changes to this flight profile, and in particular, intentionally discarding the hot staging ring appears to have freed up enough margin to make a soft landing of the booster possible.
But the real story of this flight was watching as the heat of atmospheric entry burned through at least one of the control flaps, but the spacecraft kept flying, remained in control and proceeded to a soft touchdown in the Indian ocean. The hardware was on show, but the software was performing the real miracles today.
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But the technology is back on the roadmap and is expected to be tested as soon as 2027 with the DRACO mission.
So in this video I want to explain why nuclear rockets can beat chemical rockets and Ion engines for the right application, and talk about some of the unique engineering and mission planning problems that are associated with nuclear powered spaceflight.
Lots of credit for collecting the research goes to Beyond Nerva
beyondnerva.com
And of course to Atomic Rockets
projectrho.com/public_html/rocket
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And that's just the start, there are lots of panels from the US and Soviet space programs,
High quality images and discussion of the importance of many of these can be found on Steve's excellent Flickr account
flickr.com/photos/jurvetson
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This was just 2 hours of us looking at things and Steve enthusiastically explaining the history of things while I tried to capture the tour on my phone
(I had planned to bring better cameras, but messed that up)
There's more to come!
All these exhibits come with better photographs and minus the space geek banter at his Flickr album:
flickr.com/photos/jurvetson/albums/72157623704246792
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And, Rocket Factory Augsburg test a rocket stage in Scotland at Saxa Vord spaceport!
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There's a lot of specialized techniques and terminology involved, a lot of understanding and management of your position, orientation, velocity and of course energy.
I flew with Hoagy, I brought the cameras, he flew the plane, narrated the process, and I filled in the gaps.
Music:
The Whole Other - 'Between The Drops'
Unicorn Heads - 'Vital Whales'
TrackTribe - 'Coastline'
Quincas Moreira - 'Airborne'
Jeremy Blake - 'Sunspots'
TrackTribe - 'Monument'
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Which oddly enough means that between the last flight of Shuttle and the first Crewed flight of Dragon it was the best operational human rated spacecraft.... I never thought about that until I wrote this description.
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Track GPS Interference using ADS-B data
gpsjam.org
Sorry about the crappy AI Generated thumbnail, I'm just running out of spare time.
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Discovering an asteroid involves more than just taking a photo of a space rock, it's required to compute the orbit of the object and that requires multiple images over time and lots of math. Once you have an orbit your can figure out where it will be in the future and the past, and importantly, determine that it's not the same as and of the million other asteroids already known.
In recent years new cloud computer resources and software have enabled scientists at the Asteroid Institiute to explore old data and find new discoveries, specifically 27,500 asteroids were found in images from the Dark Energy Survey which had primarily been looking at supernovae.
Find out more about the Asteroid Institute Here:
b612.ai
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While the concept was proven, no mission could be matched to the capabilities and no other test reactors have been flown by the USA.
(The Soviet Union on the other hand flew several)
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Many of the eclipse planning maps come from this site:
http://xjubier.free.fr/en/site_pages/Solar_Eclipses.html
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But across the US the weather made it the only option, and to compound things, in addition to the runway being unfamiliar, the winds threw a few curveballs at them resulting in an approach that landed over 3000 feet before it was supposed to.
Wayne Hale published his excellent first person account of this mission:
waynehale.wordpress.com/2024/03/10/putting-atlantis-at-risk
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Before he was an astronaut he was a naval aviator, flying F-14's and he specifically flew many aerial stunts for the movie Top Gun.
This is a montage of multiple cameras, the shuttle view through the HUD and internal communications between the crew on the flight deck during this critical phase of flight.
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Launches from USA, Russia, India, China, Japan and even New Zealand!
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But their biggest launch vehicle is a direct descendent of the American Thor/Delta rocket and while Delta is soon to be retired, Japan's H-3 has a long history ahead of it.
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On the other hand, it wasn’t a hardware failure with the plane and was entirely down to an undocumented control configuration, with an unlabeled key switch. I should have caught this earlier if I was paying attention, on the Cirrus there’s a requirement to check the electrical power during the run up, but not on this plane, I think I’m adding it to my checklists.
Beyond this, the plane has been great to fly, we’ve managed to fix the right screen, which had been written off by the avionics people we approached. The biggest remaining problem is the right wingtip nav light isn’t working, and as far as we can tell there’s a broken or disconnected wire from the time the wing was removed for transport. The final flight by the previous owner ended with the plane running out of fuel and landing in a field, and it’s likely that something wasn’t properly connected.
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The starship on orbit failed to maintain attitude during the initial reentry phase and this doomed the spacecraft to a fiery disintegration over the Indian Ocean.
Congratulations to SpaceX on setting new records - let's get some soft landings next time.
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After recent lunar landing missions experienced various levels of success, I was really curious as to how the landing guidance operated on a 60 year old spacecraft without fully digital computers. Using 4 radar beams the spacecraft's analogue guidance system was able to descend under control and cancel its velocity for the soft landing.
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India selects their astronauts for their first human space flight.
Varda shares and amazing video of their capsule reentry and SpaceX continue to set new records.
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Both of these factors are core to NASA's Artemis program, and so seeing success here is important to NASA's plans.
However.
It's far from a perfect success, because it appears to have fallen over during the landing, and this is limiting the communications with the Earth, it's not clear how much science will be possible with the lunar surface payloads, but at least 3 of the payloads already contributed directly to the success of the landing.
The model I used in animations is by IronManElonMusk for Juno New Origins
simplerockets.com/c/y29Fg0/NOVA-C
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Ok it's not much of a toy, but it is fascinating to figure out how this worked, and how there's a link to spaceflight in this story.
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Varda Space finally get permission to drop the drugs they made in space back to earth.
Intuitive Machines Odysseus launches to the moon.
Collins tests a space suit in zero G.
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If you want to see more of those amazing images from Juno, check the Junocam page:
https://www.missionjuno.swri.edu/junocam/processing
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But, you might have noticed I'm a bit of a nerd and I wanted to find out exactly how this occurred, I've built some strange hacks to solve problems, and know that computer networking can frequently devolve into digital matroshka dolls with data inside other data packaged in different ways.
And the first E-Mail sent from space is exactly this kind of thing, with Digital data encoded into audio, encoded into a different kind of digital, wrapped into K Band radio etc and somehow eventually getting to the servers on Earth.
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JAXA's SLIM Spacecraft performed a near perfect lunar descent until the point it was hovering 50m above the lunar surface, at that point there was a huge engine failure and one of the nozzles breaks off.
The lander adjusts guidance and successfully lands anyway, but with too much lateral velocity to reach the correct orientation.
Thanks to Tony De La Rosa for translating the slides.
Original slides, images and video are here:
isas.jaxa.jp/home/slim/SLIM/gallery/index.html
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