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The heater shield or heater-shaped shield is a form of European medieval shield, ... This design lent itself to being relatively inexpensive and easy to make. It was ...
An example of a steel heat shield on a BMW E series engine Rigid heat shields have until recently commonly been made from solid steel, [6] but are now often made from aluminum. Some high-end rigid heat shields are made out of either aluminum, gold or composite, with most examples including a ceramic coating to provide a thermal barrier , which ...
As body armour improved, knight's shields became smaller, leading to the familiar heater shield style. Both kite and heater style shields were made of several layers of laminated wood, [6] with a gentle curve in cross section. The heater style inspired the shape of the symbolic heraldic shield that is still used today.
The earliest depictions of proto-heraldic shields in the second half of the 12th century still have the shape of the Norman kite shield used throughout the 11th and 12th centuries. By about the 1230s, shields used by heavy cavalry had become shorter and more triangular, now called heater shields.
The first reentry test of a PICA-X heat shield was on the Dragon C1 mission on 8 December 2010. [35] The PICA-X heat shield was designed, developed and fully qualified by a small team of a dozen engineers and technicians in less than four years. [33] PICA-X is ten times less expensive to manufacture than the NASA PICA heat shield material. [36]
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AVCOAT was used for the heat shield on NASA's Apollo command module. [4] In its final Apollo form, this material was called AVCOAT 5026–39. Although AVCOAT was not used for the Space Shuttle orbiters, NASA again used the material for its Orion spacecraft [5] first for the initial Orion test and then for a different type of heat shield for the later Orions.