Shuttle/Agena study. Annex C: Space shuttle candidate insulator/propellant

The problem associated with the absorption of space tug propellants by the thermal insulation of the space shuttle orbiter during an emergency propellant dump was investigated. A test program was conducted to determine the compatibility of two space shuttle candidate insulation samples with earth-storable propellants. The propellant combinations used were placed in contact with the thermal insulation for two hours. Following exposure to propellants, the insulation samples were heated to 850 F for five minutes. A thermal conductivity index was determined before and after testing to evaluate possible degradation of sample chemical conductivity.