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CONTROL AND HEAT SHIELD REQUIREMENTS FOR BANK-MODULATED SUPERCIRCULAR ENTRY.
MASSACHUSETTS INST OF TECH CAMBRIDGE INSTRUMENTATION LAB
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Bank modulation for supercircular entry was investigated from a control and heating standpoint. The use of error rates in feedback for pitch and yaw loops rather than inertial rates was shown to produce reaction-jet impulse savings on the order of 80 percent. Heating was investigated for 1 a pointed half cone trimmed at LD max, 2 a blunted half spherecone trimmed at LD max, 3 a blunted half spherecone trimmed at CL max-all these with the round side windward - and 4 a delta-winged glider trimmed to give the LD of configuration 1. These vehicles were considered to have a 12-man payload capacity. The blunted half sphere-cone trimmed at CL max required the least heat protection weight. Author
APPROVED FOR PUBLIC RELEASE