The needs for a satisfactory insulation are a It must be able to resist radiation. b Future orbits will require long time exposure to gamma rays, neutron, and proton exposure. c Returning signals must be clear, and to keep lenses clear the insulation must be free from causes of smoking and outgassing. d Temperature requirements will be greater, and the insulation must be able to meet abnormal low temperatures as well. e The manufacturing and assembly of flight items demands an insulation that will stand up against the handling of all degrees of experience of help. f Electrical properties must be maintained and improved. g The weight of the insulation must be considered. A light weight insulation means that payloads can be increased. Author
Prepared for presentation at Wire and Cable Symposium (12th) held at Asbury Park, N. J., 4-6 Dec 1963.