Accession Number:

AD0623628

Title:

CONTROL AND HEAT SHIELD REQUIREMENTS FOR BANK-MODULATED SUPERCIRCULAR ENTRY.

Descriptive Note:

Master's thesis,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE INSTRUMENTATION LAB

Personal Author(s):

• Brekka,Lawrence T.

Report Date:

1965-02-01

Pagination or Media Count:

200.0

Abstract:

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

Descriptors:

• (*ATMOSPHERE ENTRY
• MANNED SPACECRAFT)
• (*HEAT SHIELDS
• MANNED SPACECRAFT)
• (*MANNED SPACECRAFT
• CONTROL SYSTEMS)
• REENTRY VEHICLES
• LIFT
• DRAG
• DESCENT TRAJECTORIES
• COMPUTER PROGRAMMING
• PITCH(MOTION)
• YAW
• AERONAUTICS
• ASTRONAUTICS
• CONICAL BODIES
• BLUNT BODIES
• DELTA WINGS
• GLIDERS

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE