DESIGN CRITERIA FOR RADIATION RESISTANT FLIGHT CONTROL SYSTEMS FOR AEROSPACE VEHICLES.
NORTHROP SPACE LABS HAWTHORNE CALIF
Pagination or Media Count:
Physical data were determined to establish design criteria for radiation-resistant flight control systems in aerospace vehicles operating in nearearth space regions. The objective was accomplished by investigating a general flight control system on a component and material level, and then discussing overall implications for the system. The radiation environment to be encountered is defined, and consists of Van Allen zones, solar flares, solar winds, and galactic cosmic rays. The intensity spectra were defined and computed to calculate the penetration of the radiation through vehicle skins. Proton, electron, and bremsstrahlung radiation penetrations are calculated. The resultant doses and flux exposures to the systems components are determined for four representative missions a 2000-mile altitude circular orbit, a 21,500-mile altitude circular orbit, a high eccentricity elliptical orbit, and a lunar probe. Criteria necessary for utilizing neutron and gamma doses to discuss radiation damage are determined, including a state-of-the-art discussion of spacenuclear radiation correlation techniques. Author Author