Elon Musk
@elonmusk · Jan 23, 2019
310S stainless is better for high temp outer skin, as it can take ~1450 Kelvin, so active cooling with cryogenic fuel only has to mitigate 300 degrees of delta temp
Elon Musk
@elonmusk
~1750K is peak heating expected on about 20% of Starship for LEO entry, ~1600K on 20%. Rest drops below 1450K, so no heat shield needed. Radiative cooling at T^4 takes care of 60% of the ship. Another reason for steel.
03:09 PM · January 23, 2019 · 0 views
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