Question

what is the materials used as the heat shield ?what happens if we use normal materials?
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Answer 1

Answer:

An ablative heat shield is designed to protect an object from overheating by dissipating, reflecting, absorbing heat, or simply gradually burn and fall away from the aircraft, pulling the excess heat with it. The term is most often used in reference to exhaust heat management and to systems for dissipation of heat due to friction.