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Class: Military. Type: Target. Destination: Medium Earth Orbit. Nation: USA. Agency: U.S. Air Force.

Space craft engaged in investigation of spaceflight techniques and technology. The Rigidsphere and Gridsphere satellites of the 1960s were wire frames, embedded in an inflatable plastic substrate that sublimated away in space, leaving the open wire grid spheres.

Typical orbit: 781 km x 916 km at 88 degrees inclination. Mass: 6.00 kg (13.20 lb).


Rigidsphere Chronology
  • 1971 August 7 - Rigidsphere - Launch Site: Vandenberg. Launch Complex: 576A2. Launch Vehicle: Atlas. Mass: 6.00 kg (13.20 lb). Perigee: 781 km (485 mi). Apogee: 916 km (569 mi). Inclination: 87.60 deg. Period: 101.80 min.
    Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).


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© Mark Wade, 1997 - 2008 except where otherwise noted.