>参考:Atmospheric entry - Wikipedia:https://en.wikipedia.org/wiki/Atmospheric_entry
> Apollo Investigation, Re-Entry Matters by Mary Bennett. A Detailed Investigation into Apollo Command Module Returns. AULIS Online – Different Thinking:https://www.aulis.com/re-entrymatters.htm
>参考:Clearly it isn't possible for a space capsule to reenter the atmosphere by taking several revolutions to bleed off speed and avoid friction. Why? - Quora:https://www.quora.com/Clearly-it-isnt-possible-for-a-space-capsule-to-reenter-the-atmosphere-by-taking-several-revolutions-to-bleed-off-speed-and-avoid-friction-Why