heat shieldheat shield
any heat-protecting device or system, esp. an ablative coating or tiles, bonded to the surface of a reentry spacecraft
A barrier that prevents the heating of a space or an object by absorbing, reflecting, or dissipating external heat, especially a protective structure on a spacecraft or missile that dissipates heat on atmospheric reentry by melting and vaporizing.
(plural heat shields)
- (space science) A shield designed of a substance that absorbs excessive heat from an outside source by either dissipating, reflecting or simply absorbing the heat.