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GLOMR (S85-6)


GLOMR (Global Low Orbiting Message Relay), was a DARPA mission designed to demonstrate the ability to read out, store, and forward data from remote ground-based sensors.

The spacecraft was built by Defense Systems Inc. (DSI) and Riockwell and conssited of a small, 62-sided polyhedron without stabilisation. Design included redundant transmitters, receivers, batteries, and battery charge control systems. It had two CMOS microprocessors - one for communications control, the other for scheduling, mass memory, housekeeping, and mission control, telemetry, and command functions.

The satellite was first scheduled for deployment from Shuttle mission STS-51B, but a battery problem forced a return to Earth for repair. Reflown and deployed from Shuttle mission STS-61A, the vehicle finally re-entered after 14 months. The total price was less than 1 million dollars.

An improved version was launched as SECS (TERCEL).

Nation: USA
Type / Application: Experimental communication
Operator: DARPA, USAF STP (Space Test Program)
Contractors: DSI, Rockwell
Equipment: 2 UHF transponders digital store and forward communications system
Configuration: GLOMR Bus (62-sided polyhedron, unstabilized, body mounted solar cells)
Propulsion: None
Power: Solar cells, batteries
Lifetime: 14 months
Mass: 52 kg
Orbit: 317 km × 332 km, 57.0
Satellite COSPAR Date LS Launch Vehicle Remarks
GLOMR (1) (S85-6) N/A 29.04.1985 CCK LC-39A ND Shuttle with Challenger F7 (STS 51-B), Nusat / not deployed
GLOMR 1 (S85-6) 1985-104B 30.10.1985 CCK LC-39A Shuttle with Challenger F9 (STS 61-A)
Further GLOMR missions:
Further STP missions:

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