2011-03-09

Ablative

Ablative means 'able to be eroded or flaked away'. An ablative heat shield is one in which the shield material itself vaporises and takes the heat away with it as it goes. The Apollo command module used an ablative heatshield made of a resinous material held in an aluminum honeycomb, and most entry and reentry vehicles use some form of ablative aeroshell in the same way.



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