Chemical Compatibility Study of Anti-Corrosive Materials for Stratospheric Observatory for Infrared Astronomy (SOFIA)

The Stratospheric Observatory for Infrared Astronomy (SOFIA) is a telescope designed to capture infrared light from deep space, mounted in a highly modified Boeing 747 SP. Portions of the aircraft interior are showing signs of corrosion, and need to be coated with a material that will prevent further corrosion. Up to date, current anti-corrosive materials commonly used on aircrafts are incompatible with the very thin aluminum surface of the telescope mirrors. Results Engineering Solutions During application/curing of material: • Pump outgassing materials out of telescope cavity • Positive pressure enclosure for mirror • Cover application areas as material cures • Pump Telescope Assembly (TA) cavity to positive pressure