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Rigorous Analysis Confirms NASA’s Artemis II Heat Shield Performance
Publication: NASA
Author: Elyna Niles-Carnes
Source published: 15/10/2026, 14:57:21 UTC
Briefing created: 15/10/2026, 16:06:29 UTC
Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 15/10/2026, 15:05:25 UTC.
Briefings
NASA confirmed that Artemis II's heat shield performed as expected, with a ten-fold reduction in cracks and char loss compared to Artemis I. The spacecraft reentered within 192 feet of its target, splashed 0.59 miles off San Diego, and returned to Earth with a cabin temperature of mid-70s Fahrenheit despite peak external temperatures exceeding 4,000 degrees Fahrenheit. Analysis of 186 Avcoat blocks and 1,300 ceramic tiles showed consistent performance across both missions, validating the new trajectory modification that limited downrange distance. However, specific material recession rates and long-term durability data remain pending extraction and testing.
Key points
- Artemis II heat shield experienced a ten-fold reduction in cracks and char loss compared to Artemis I, validating the new trajectory modification that limited downrange distance.
- The spacecraft reentered within 192 feet of its target, splashed 0.59 miles off San Diego, and returned to Earth with a cabin temperature of mid-70s Fahrenheit despite peak external temperatures exceeding 4,000 degrees Fahrenheit.
Context and limitations
Specific material recession rates and long-term durability data remain pending extraction and testing. Extensive arc jet material testing at Ames Research Center informed the trajectory modification, but full long-term thermal analysis continues at Marshall Space Flight Center.
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