(n) :
A system designed to protect what is behind it against heat.
(n) :
(astronautics) A system designed to protect an object entering an atmosphere at high speed from the resulting very high temperature due to atmospheric drag
(n) :
A system designed to protect what is behind it against heat.
(n) :
(astronautics) A system designed to protect an object entering an atmosphere at high speed from the resulting very high temperature due to atmospheric drag