Accession Number : AD0680827

Title :   OCTAHEDRAL RESEARCH SATELLITE MARK III; OV5-1 (ERS 27).

Descriptive Note : Final rept. 15 Dec 65-28 Apr 67,

Corporate Author : TRW SYSTEMS REDONDO BEACH CALIF

Personal Author(s) : Chapman,Mac C. ; Gardner,James B. ; Martin,Randall J.

Report Date : APR 1968

Pagination or Media Count : 69

Abstract : The Octahedral Research Satellite - Mark III, ERS 27 (Air Force designation OV5-1) was launched into an eccentric earth orbit on 28 April 1967, and assigned international designation 1967-40E. The satellite was instrumented with a scientific payload and support subsystems designed to monitor soft X-rays, bremsstrahlung, and protons from solar active regions. The spacecraft was a regular octahedron with 11.5 inch edge length, weighing 16.3 pounds. It was designed to be spin stabilized at a rate of 12 RPM, and produce an average sunlit power of 4.0 watts. The scientific payload consisted of eleven radiation detectors and a sun aspect sensor. The payload data was sampled by a twenty-three segment commutator, processed by an IRIG 5 subcarrier oscillator, and transmitted in real time to the ground stations via a PAM/FM/PM 136MHz transmitter operating at 1 watt. (Author)

Descriptors :   (*SCIENTIFIC SATELLITES, *SOLAR RADIATION), X RAYS, BREMSSTRAHLUNG, PROTONS, ELECTRONIC COMMUTATORS, TELEMETER SYSTEMS, SOLAR FLARES, INSTRUMENTATION

Subject Categories : Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE