Accession Number : AD0266591
Title : GUIDANCE AND CONTROL DURING DIRECT-DESCENT PARABOLIC REENTRY
Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON D C
Personal Author(s) : FOUDRIAT,EDWIN C. ; WINGROVE,RODNEY C.
Report Date : NOV 1961
Pagination or Media Count : 1
Abstract : Four guidance and control techniques applicable to the reentry from parabolic orbits of vehicles having low lift-drag ratios are described. Techniques include pilot and automatic control to a reference trajectory and the use of prediction to improve and simplify guidance procedures. Comparison between systems is made and areas where further study may be profitable are indicated.
Descriptors : *ATMOSPHERE ENTRY, *CONTROL, *GUIDANCE, *REENTRY VEHICLES, ANALOG COMPUTERS, AUTOMATIC, COMPUTER LOGIC, CONTROL SYSTEMS, FLIGHT SIMULATORS, GUIDED MISSILE TRAJECTORIES, LINEAR SYSTEMS, LUNAR PROBES, MANNED, MATHEMATICAL PREDICTION, ORBITS, SPACE FLIGHT
Distribution Statement : APPROVED FOR PUBLIC RELEASE