RE: https://mastodon.social/@arstechnica/116421112731650759

Whether or not the #HeatShield worked, there was nothing I could do. Thereโ€™s so much we didnโ€™t model correctly on entry. There was a pointโ€”thereโ€™s something that I feel that I am not ready to say to the public yet

#Artemis #Orion #reentry

Artemis 2 - the aftermath ... specifically, the heatshield

interestingengineering.com/beyโ€ฆ

#Artemis2 #heatshield #engineering

NASA is right to focus on 'hardware rich' approach following Artemis II heat shield gamble

Artemis II landed safely, but the real test comes next: whether NASA delivers the unsparing post-mission report the Orion heat shield crisis demands.

Interesting Engineering

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/

Artemis II Crew Returns Safely After Moon Trip; Heat Shield Issue Investigated

Artemis II astronauts splashed down safely after a 10-day moon trip. NASA is looking into heat shield durability after a prior test issue.

NewsletterTF

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.

Here's what to expect from the fiery, 14-minute return of Artemis II https://arstechni.ca/kQ7R #heatshield #artemisII #reentry #Space #orion #space
Here's what to expect from the fiery, 14-minute return of Artemis II

Letโ€™s not beat around the bushโ€”we have to hit that angle correctly."

Ars Technica

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 10,000ยฐC ๐ŸŒก๏ธ or more โ€“ 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.

There's an issue with the Artemis II heat shield, but NASA isn't worried. Here's why.

The Artemis II astronauts are about to fall to Earth at the fastest speed humans have ever travelled inside a spacecraft with a compromised heat shield. But NASA remains confident they will be safe.

Live Science
For Artemis II, Returning to Earth May Be the Most Dangerous Part of the Mission

After a successful flight around the moon, the astronauts are relying on a flawed heat shield to protect them as they re-enter Earthโ€™s atmosphere.

The New York Times