Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1981-10-02
1983-04-26
Dixon, Jr., William R.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
350166, 428325, 428428, 428427, B32B 518, B32B 1706
Patent
active
043813330
ABSTRACT:
A high temperature stable and solar radiation stable thermal control coating either useful as such, applied directly to a member to be protected, or applied as a coating on a re-usable surface insulation (RSI) has a base coat layer and an overlay glass layer. The base coat layer has a high emittance, and the overlay layer is formed from discrete, but sintered together glass particles to give the overlay layer a high scattering coefficient. The resulting two-layer space and thermal control coating has an absorptivity-to-emissivity ratio of less than or equal to 0.4 at room temperature, with an emittance of 0.8 at 1200.degree. F. It is capable of exposure to either solar radiation or temperatures as high as 2000.degree. F. without significant degradation. When used as a coating on a silica substrate to give an RSI structure, the coatings of this invention show significantly less reduction in emittance after long term convective heating and less residual strain than prior art coatings for RSI structures.
REFERENCES:
patent: 3591248 (1971-07-01), Meumier et al.
patent: 3955989 (1976-05-01), Nakamura
patent: 4039297 (1977-08-01), Takenaka
patent: 4093771 (1978-06-01), Fletcher et al.
patent: 4169655 (1979-10-01), Jacobbson
patent: 4247599 (1981-01-01), Hopper
patent: 4308316 (1981-12-01), Gordon
Beggs James M. Administrator of the National Aeronautics and Space
Goldstein Howard E.
Leiser Daniel B.
Stewart David A.
Brekke Darrell G.
Dixon Jr. William R.
Manning John R.
Marchant Robert D.
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