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astronautix.com Microsat SSTL

SSTL Microsatellite
SSTL Microsatellite -

Credit: NASA. 7,398 bytes. 131 x 195 pixels.



Class: Technology. Nation: UK.

Basic Surrey Microsat bus.


Specification

Total Mass: 50 kg.


Microsat SSTL Chronology


06 October 1981 Oscar 9 Program: Oscar. Launch Site: Vandenberg . Launch Vehicle: Delta 2914. Mass: 52 kg. Perigee: 372 km. Apogee: 374 km. Inclination: 97.6 deg.

University of Surrey research microsatellite. Radio science; also carried amateur radio package. Communication and geophysics research satellite. Launch time 1127 GMT. Also registered by the United States in ST/SG/SER.E/59, with category D and orbital parameters 95.3 min, 531 x 533 km x 97.5 deg. UoSAT-OSCAR 9 was launched piggyback with Solar Mesosphere Explorer satellite. Weight 52 kg. Box shaped 740 x 420 x 420 mm. Deployable gravity gradient boom. Firsts: First on-board computer (IHU - Integrated Housekeeping Unit) for battery and attitude management, remote control, and experiments. Built by the University of Surrey in the United Kingdom, UO-9 was UoSAT's first experimental satellite. It was a scientific and educational low-Earth orbit satellite containing many experiments and beacons but no amateur transponders. UO-9 was fully operational until it re-entered October 13, 1989 from a decaying orbit after nine years of service.


01 March 1984 Oscar 11 Program: Oscar. Launch Site: Vandenberg . Launch Vehicle: Delta 3925. Mass: 52 kg. Perigee: 651 km. Apogee: 670 km. Inclination: 97.8 deg.

University of Surrey experimental microsatellite. Built in only 6 months, UoSAT-2 carried the first modern digital store and forward (S&F) communications payload and a prototype CCD camera. Also performed magnetospheric studies. Launch time 1759 GMT. Still operational in 2000.


22 January 1990 Oscar 14 Program: Oscar. Launch Site: Kourou . Launch Vehicle: Ariane 4. Mass: 46 kg. Perigee: 781 km. Apogee: 797 km. Inclination: 98.6 deg.

University of Surrey experimental satellite. The first of Surrey Satellite Technology Ltd's modular microsatellites. Launched on the Ariane ASAP; carried an operational store and forward communications payload with extensive radiation monitoring experiments for SatelLife and Data Trax Inc (USA). Still operational in 2000. Owner/operator University of Surrey, Dept of Electronic and Electrical Engineering, Guildford, Surrey GU2 5XH.


17 July 1991 Oscar 22 Program: Oscar. Launch Site: Kourou . Launch Vehicle: Ariane 4. Mass: 50 kg. Perigee: 759 km. Apogee: 772 km. Inclination: 98.5 deg.

Customer: SateLife. Carried store and forward communications and Earth observation payloads, replacing those lost on UoSAT-4. Still operational in 2000.


10 August 1992 S80/T Launch Site: Kourou . Launch Vehicle: Ariane 42P. Mass: 50 kg. Perigee: 1,306 km. Apogee: 1,320 km. Inclination: 66.1 deg.

An industrial research microsatellite built by Surrey Satellite Technology Ltd (SSTL) for Matra and CNES to carry out 'Little LEO' communications service experiments. Still operational in 2000. S80/T was designed to investigate the technical feasibility of using a constellation of small satellites placed in near-Earth orbit to provide global communications and position location using only hand-held terminals. S80/T was the first fully commercial application of the SSTL multi-mission, modular microsatellite platform developed at the University of Surrey. The same basic platform was also used for the Korean KITSAT-A microsatellite, which accompanied S80/T into orbit on the same launch. The S80/T mission was completed, from concept to launch, within one year and SSTL delivered the platform, associated groundstation equipment and would be providing operations support during the mission within a contract of less than 1M.


26 September 1993 Posat 1 Program: Oscar. Launch Site: Kourou . Launch Vehicle: Ariane 4. Mass: 50 kg. Perigee: 788 km. Apogee: 802 km. Inclination: 98.7 deg.

Portugal's first satellite achieved through a technology transfer programme with Surrey Satellite Technology Ltd. Carried store and forward, DSP communications, GPS and Earth observation payloads. Still operational in 2000. Additional Details: Posat 1.


31 August 1995 Fasat-Alfa Program: Fasat. Launch Site: Plesetsk . Launch Vehicle: Tsyklon 3. Mass: 50 kg.

Chile's first satellite built through a technology transfer programme with Surrey Satellite Technology Ltd. Carried store and forward and Earth observation payloads. Decommissioned as of 2000.


10 July 1998 Fasat-Bravo Program: Fasat. Launch Site: Baikonur . Launch Vehicle: Zenit-2. Mass: 50 kg. Perigee: 815 km. Apogee: 820 km. Inclination: 98.8 deg.

Customer: Chilean Air Force (FACH). Chile's second satellite carrying store and forward and Earth observation payloads, replacing those lost on FASat-Alpha. Still operational as of 2000. Additional Details: Fasat-Bravo.


28 June 2000 Tsinghua Launch Site: Plesetsk . Launch Vehicle: Kosmos 11K65M. Mass: 50 kg. Perigee: 687 km. Apogee: 713 km. Inclination: 98.1 deg.

Tsinghua University of Beijing satellite equipped with an imager, communications payload, and momentum wheels for 3-axis stabilisation. The 50 kg, 0.69 x 0.36 x 0.36m box-shaped satellite used a standard Surrey SSTL microsat bus.


26 September 2000 Tiungsat-1 Launch Site: Baikonur . Launch Vehicle: Dnepr. Mass: 50 kg. Perigee: 644 km. Apogee: 658 km. Inclination: 64.6 deg.

Customer: Astonautic Technology (M) SDN. BHD. Malaysia's first microsatellite built through a technology transfer programme with Surrey Satellite Technology Ltd Carried multi-spectral Earth imaging CCD cameras, meteorological Earth imaging CCD camera, digital store and forward communications, cosmic-ray energy deposition experiment (CEDEX)



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Last update 12 March 2001.
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