Encyclopedia Astronautica
GLOMR


American military store-dump communications satellite. 2 launches, 1985.10.30 (GLOMR; GLOMAR) and 1990.04.05 (USA 55).

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

The satellite was first scheduled for deployment from STS-51B, but a battery problem forced a return to Earth for repair. Reflown and deployed from STS-61A, the vehicle finally re-entered after 14 months. The total price was less than 1 million dollars. The spacecraft was a small, 62-sided polyhedron, and unstabilized. The 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 SECS (Special Experimental Communications System) or GLOMR 2 was an improved digital store and forward communications spacecraft for a classified mission. The design was similar to GLOMR with more data storage, greater redundancy, and more space qualified hardware content. SECS was the first spacecraft launched on the air-launched Pegasus launch vehicle. The spacecraft operated for 3.5 years. The spacecraft had a spherical structure, and was unstabilized with body mounted solar cells. The payload was to GLOMR.

AKA: SECS.
Height: 0.60 m (1.96 ft).
First Launch: 1985.10.30.
Last Launch: 1990.04.05.
Number: 2 .

More... - Chronology...


Associated Countries
See also
  • Pegasus Privately-funded, air-launched winged light satellite launcher. More...
  • Shuttle The manned reusable space system which was designed to slash the cost of space transport and replace all expendable launch vehicles. It did neither, but did keep NASA in the manned space flight business for 30 years. More...

Associated Launch Vehicles
  • Shuttle American winged orbital launch vehicle. The manned reusable space system which was designed to slash the cost of space transport and replace all expendable launch vehicles. It did neither, but did keep NASA in the manned space flight business for 30 years. Redesign of the shuttle with reliability in mind after the Challenger disaster reduced maximum payload to low earth orbit from 27,850 kg to 24,400 kg. More...
  • Pegasus American air-launched orbital launch vehicle. Privately-funded, air-launched winged light satellite launcher. More...

Associated Manufacturers and Agencies
  • USN American agency overseeing development of rockets, spacecraft, and rocket engines. USN Joint Task Force 7, USA. More...
  • DARPA American agency overseeing development of rockets and spacecraft. Defense Advanced Research Projects Agency (formerly ARPA), USA. More...
  • CTA American manufacturer of spacecraft. CTA, Inc. , Virginia, Virginia, Virginia, USA More...

Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.
  • JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. Web Address when accessed: here.
  • McDowell, Jonathan, Launch Log, October 1998. Web Address when accessed: here.

Associated Launch Sites
  • Cape Canaveral America's largest launch center, used for all manned launches. Today only six of the 40 launch complexes built here remain in use. Located at or near Cape Canaveral are the Kennedy Space Center on Merritt Island, used by NASA for Saturn V and Space Shuttle launches; Patrick AFB on Cape Canaveral itself, operated the US Department of Defense and handling most other launches; the commercial Spaceport Florida; the air-launched launch vehicle and missile Drop Zone off Mayport, Florida, located at 29.00 N 79.00 W, and an offshore submarine-launched ballistic missile launch area. All of these take advantage of the extensive down-range tracking facilities that once extended from the Cape, through the Caribbean, South Atlantic, and to South Africa and the Indian Ocean. More...
  • Point Arguello WADZ Air-launched rocket drop zone known to have been used for 28 launches from 1990 to 2007, reaching up to 4539 kilometers altitude. More...
  • Cape Canaveral LC39A Shuttle, Saturn V launch complex. LC39A and LC39B, part of the Kennedy Space Center, were built on Merritt Island (north/northwest of the Cape) to support the Saturn V/Apollo lunar landing program. The sites were modified in the last half of the 1970s to support the manned Space Shuttle program. Construction began in December 1963. Complex 39A was completed on 4 October 1965. Complex 39A supported two unmanned and nine manned Saturn V/Apollo missions between 9 November 1967 and 8 December 1972. The site also supported the launch of the Skylab space station on 14 May 1973. Both complexes were modified to support Space Shuttle missions later on. Complex 39A supported the first Space Shuttle launch on 12 April 1981. More...

GLOMR Chronology


1985 October 30 - . 17:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39A. LV Family: Shuttle. Launch Vehicle: Shuttle. LV Configuration: Space Shuttle 61-A.
  • GLOMR; GLOMAR - . Payload: Challenger F9 / GLOMR 1. Mass: 52 kg (114 lb). Nation: USA. Agency: USN. Class: Communications. Type: Military communications satellite. Spacecraft: GLOMR. Decay Date: 1986-12-26 . USAF Sat Cat: 16231 . COSPAR: 1985-104B. Apogee: 332 km (206 mi). Perigee: 317 km (196 mi). Inclination: 57.0000 deg. Period: 91.00 min. Summary: Released from STS 61A 11/1/85. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B)..

1990 April 5 - . 19:10 GMT - . Launch Site: Point Arguello WADZ. Launch Pad: 36.0 N x 123.0 W. Launch Platform: NB-52 008. LV Family: Pegasus. Launch Vehicle: Pegasus. LV Configuration: Pegasus 001/F1.
  • USA 55 - . Payload: GLOMR 2 / TERCEL / SECS. Mass: 25 kg (55 lb). Nation: USA. Agency: DARPA. Class: Communications. Type: Military communications satellite. Spacecraft: GLOMR. USAF Sat Cat: 20547 . COSPAR: 1990-028B. Apogee: 642 km (398 mi). Perigee: 477 km (296 mi). Inclination: 94.1000 deg. Period: 95.90 min. Summary: Store and forward..

Home - Browse - Contact
© / Conditions for Use