scope:

General.

This specification covers the detail requirements for the application of one-part urethane paints for thermal control purposes on space flight hardware.

Classification

The process covered by this specification consists of the following classes. If a class is not specified, the method of thickness verification is optional and either Class I or Class II is acceptable.

a. Class I - This class is designated for spacecraft hardware with simple configuration where strict control of the coating thickness is not difficult.

b. Class II - This class is designated for spacecraft hardware with complex configuration where strict control of the coating thickness is not practicable.

c. Class III - This class is designated for spacecraft hardware being coated for the purpose of meeting esthetic requirements. Control samples for thermal emittance and solar absorptance are not required.