RE: https://mastodon.social/@arstechnica/116421112731650759
Whether or not the #HeatShield worked, there was nothing I could do. There’s so much we didn’t model correctly on entry. There was a point—there’s something that I feel that I am not ready to say to the public yet
There is a bright colored region on the #HeatShield https://images-assets.nasa.gov/image/DSC_3398/DSC_3398~orig.jpg
Artemis II Crew Returns After Lunar Flyby; Questions Linger on Heat Shield Durability
Artemis II astronauts splashed down safely after a 10-day moon trip. NASA is looking into heat shield durability after a prior test issue.
#ArtemisII, #MoonMission, #SpaceExploration, #NASA, #HeatShield
https://newsletter.tf/artemis-ii-crew-returns-after-moon-trip-heat-shield-issue/
The Artemis II mission covered 694,481 miles around the moon. This is the first crewed moon trip in over 50 years.
#ArtemisII, #MoonMission, #SpaceExploration, #NASA, #HeatShield
https://newsletter.tf/artemis-ii-crew-returns-after-moon-trip-heat-shield-issue/
RE: https://mastodon.social/@arstechnica/116383449237411936
It will take several hours to several days for engineers to complete their initial inspections of the #Orion spacecraft, but the successful return to Earth on Friday proved the #HeatShield did its job.
RE: https://stefanbohacek.online/@stefan/116375745501644380
#Spacecraft are designed to be as un-aerodynamic as possible to maximise drag and help them slow down.
This deceleration during #reentry can be extremely harsh. A shock wave will envelop the spacecraft, creating air temperatures of 10,000°C 🌡️ or more – about twice the temperature of the surface of the #Sun.
The #Artemis I #HeatShield ablation during re-entry was much larger than expected. Large chunks of material separated from the heat shield in some places.