Accession Number : ADD013515

Title :   Low Susceptibility Proof Mass for a Single Axis Drag Compensation System.

Descriptive Note : Patent, Filed 7 May 81, patented 27 Dec 83,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Fischell, Robert E

Report Date : 27 Dec 1983

Pagination or Media Count : 5

Abstract : A satellite single axis drag compensation system improves stability and effects damping of movements of a cylindrical proof mass by providing an elongated, perpendicularly magnetized permanent magnet in the core of a current carrying rod the rod extends coaxially through a central bore of the proof mass. The proof mass is constructed as a composite structure of alternate cylindrical layers of diamagnetic silver and paramagnetic aluminum to reduce magnetic susceptibility thereof.

Descriptors :   *PATENTS, *ATTITUDE CONTROL SYSTEMS, *SATELLITE ATTITUDE, ALUMINUM, BORES, COMPOSITE STRUCTURES, CYLINDRICAL BODIES, DIAMAGNETISM, LAYERS, MAGNETIC PROPERTIES, MAGNETIZATION, PARAMAGNETISM, PERMANENT MAGNETS, SILVER, ELECTROMAGNETIC SHIELDING

Subject Categories : Unmanned Spacecraft
      Spacecraft Trajectories and Reentry

Distribution Statement : APPROVED FOR PUBLIC RELEASE