Accession Number : AD0639579

Title :   A PRELIMINARY STUDY OF A METHOD FOR IMPROVING POINTING ACCURACY OF A GRAVITY GRADIENT SYSTEM.

Descriptive Note : Master's thesis.

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s) : Davis,Walter Edward

Report Date : JUN 1966

Pagination or Media Count : 79

Abstract : The report is a preliminary study of attitude control in a high altitude satellite in which the gravity gradient stabilization rod is gimballed to produce reaction torques and to augment the gravity gradient restoring torques. The single axis perturbation equation describing the small angle motion of such a configuration is presented. An analytical solution of the steady-state frequency response of the system is carried out and as a result, active system requirements for reducing attitude errors are proposed based on the system response to periodic disturbances. The passive and active system responses are compared. (Author)

Descriptors :   (*ATTITUDE CONTROL SYSTEMS, *GRAVITY), (*SATELLITE ATTITUDE, CONTROL), EQUATIONS OF MOTION, TORQUE

Subject Categories : Spacecraft Trajectories and Reentry

Distribution Statement : APPROVED FOR PUBLIC RELEASE