Accession Number : AD0262023

Title :   TERMINAL GUIDANCE OF A LUNAR PROBE

Corporate Author : JET PROPULSION LAB PASADENA CALIF

Personal Author(s) : GATES,C.R.

Report Date : 14 MAY 1958

Pagination or Media Count : 1

Abstract : The problem of guiding a lunar probe to a zerovelocity or soft landing the moon is discussed. A self-contained guidance system is proposed, and measurement instruments and accuracies, guidance computer transfer functions, and the magnitude and control of impulse required in the terminal maneuver are treated. It is concluded that guidance in two stages, lateral guidance at a point some 5,000 miles above the surface using optical and inertial instruments as error sensors, and braking along the path near the surface of the moon using a radio altimeter as an error sensor, is feasible. Existing components and techniques are adequate to perform these functions; asid from weight reduction, no new developments are needed. (Author)

Descriptors :   *GUIDANCE, *LUNAR PROBES, INERTIAL GUIDANCE, LANDING AIDS, LANDING IMPACT, LANDING, MATHEMATICAL ANALYSIS, MOON, RADIO ALTIMETERS

Distribution Statement : APPROVED FOR PUBLIC RELEASE