from The American Heritage® Dictionary of the English Language, 4th Edition
- n. 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.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A shield designed of a substance that absorbs excessive heat from an outside source by either dissipating, reflecting or simply absorbing the heat.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a protective covering that protects a spacecraft from overheating on reentry
Sorry, no etymologies found.
After the burn was complete, Hank maneuveredDiscovery into a nose-forward 40-degree upward tilt so that her belly heat shield was presented to the atmosphere.
Without giving him an explanation, they had instructed Glenn not to jettison his retrorocket pack in hopes its retention would help keep a loose heat shield in place.
Ren had said that would happenthe white part was made entirely of smart matter, a heat shield to protect it from burning up on the journey into orbit.