Encyclopedia Astronautica
Polar Bear


American earth magnetosphere satellite. One launch, 1986.11.14. also known as STP P87-1, a military mission designed to study communications interference caused by solar flares and increased auroral activity.

Polar Beacon and Research satellite. The data from the mission complemented data taken by its predecessor, HILAT. The core vehicle was a Transit navigational satellite that was retrieved from the Smithsonian's National Air & Space Museum where it had been on display for 8 years. Spacecraft: Gravity gradient stabilized by deployable boom with tip mass.4 small deployable solar arrays. Payload: Auroral Imaging Remote Sensor imaged the aurora borealis; Beacon Experiment monitored ionospheric propagation over the poles.

AKA: Polar Beacon Experiment & Auroral Research.
Gross mass: 125 kg (275 lb).
Height: 1.30 m (4.20 ft).
First Launch: 1986.11.14.
Number: 1 .

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Associated Countries
See also
Associated Launch Vehicles
  • Scout American all-solid orbital launch vehicle. Solid-fuel, light payload, lower-cost launch vehicle developed by the Air Force and NASA in the late 1950's and used in a variety of configurations over thirty years. Launched from Cape Canaveral, Vandenberg, Wallops Island, and from Italy's equatorial San Marco platform off Kenya. Italy studied but did not develop subsequent upgraded versions. More...
  • Scout G American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 3A + 1 x Castor 2 + 1 x Antares 3 + 1 x Star 20 More...

Associated Manufacturers and Agencies
  • APL American manufacturer of rockets and spacecraft. Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, Laurel, Maryland, USA. More...
  • USAF American agency overseeing development of rockets and spacecraft. United States Air Force, USA. More...
  • DNA American agency overseeing development of spacecraft. Defense Nuclear Agency, 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.

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