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Proteus
G÷ktnrk 1
G÷ktnrk 1
Credit: Manufacturer Image
The Proteus (Plateforme Reconfigurable pour l'Observation, les Telecommunications Et les Usages Scientifiques) bus was developed by Thales Alenia Space in partnership with the French Space Agency CNES from 1996 to 2000. The result was design and qualification of a small and versatile satellite bus as well as a generic ground segment that could accomodate a variety of payloads. These included all types of Earth environmental and science missions; surveillance, and communications applications.

AKA: Gokturk;SMOS. Status: Operational 2008. First Launch: 2008-06-20. Last Launch: 2013-02-06. Number: 27 .

The PROTEUS platform was successfully qualified through the JASON 1 program, launched at the end of 2001. Proteus satellites for new applications could be delivered within 32 months from start of a project to launch.

The Proteus had the following specification:

  • Flight domain: Low Earth Orbits (from 600km up to 1500km); Inclination > 20 Deg
  • Launch vehicle compatability: Ariane 5, Athena 2, Cosmos, Delta 2, CZ-2D, PSLV, Rokot, Soyuz, Taurus
  • Mass Allocation: Platform: 300 kg; Payload: 300 kg
  • Power supply: 300 W Platform; 300 W Payload; 23V-37V unregulated bus; Li-Ion battery (9s/3p cells)
  • Solar Arrays: 2 wings with 4 panels (1.5 x 0.8 m each). 1.1 kW Beginning Of Life
  • Payload electrical I/F: 16 power lines + point-to-point link + Bus MIL 1553 B (160 kbps)
  • Data Storage: 500 Mbits Housekeeping + 2 Gbits Payload data storage
  • TM/TC: 722 kbps TM/QPSK & 4 kbps TC/BPSK
  • Propulsion: 28 kg max monopropellant N2H4 with N2 pressurant; Unregulated pressure: 22 bars - 5.5 bars End Of Life
  • Maneuvers: 4 x 1 N Thrusters providing 120 m/s total dV at spacecraft mass of 500 kg
  • Pointing mode: Earth, Nadir, Sun, inertial, including Sun synchronous orbits
  • Pointing accuracy: 72 arc-sec per axis
  • Stability: 2.5 arc-sec/sec (excluding payload perturbations)
  • Reliability: 0.759 over 5 years and 0.882 over three years
  • Unavailability: 0.82 % (0.25% = failures, 0.50% = radiation, 0.07% = orbit correction)


More at: Proteus.

Subtopics

Jason French earth sea satellite. Jason was a joint mission between CNES (the French space agency) and NASA/JPL, carrying the same type of sea surface altimeter used on NASA's Topex satellite. Altimetry, Radar satellite built by Alcatel Space for NASA, CNES, France. Launched 2001. Used the Proteus Bus bus.

Calipso American earth weather satellite. Earth Observation, Lidar satellite built by Alcatel Space for NASA, CNES, France. Launched 2006. Used the Proteus Bus bus.

Corot French visible astronomy satellite. Astronomy satellite built by Alcatel Space for CNES, ESA, France. Launched 2006. Used the Proteus Bus bus.

GIOVE B (GSTB v2B) Navigation satellite built by Galileo Industries (Astrium: prime, Alcatel Space: bus) for ESA, Europe. Launched 2008. Used the Proteus Bus bus.

Jason 2, 3 (OSTM) Altimetry, Radar satellite built by Alcatel for NOAA, Eumetsat, NASA, CNES, France. Launched 2008 - 2016. Used the Proteus Bus bus.

SMOS (Earth Explorer 2) Earth Science satellite built by Alcatel Space for ESA, Europe. Launched 2009. Used the Proteus Bus bus.

Gokturk 1A, 1B Reconnaissance, optical satellite built by Telespazio (Finmeccanica/Thales) (prime); Thales Alenia Space (bus) for Turkish Ministry of Defence, Turkey. Launched 2016. Used the Proteus Bus. Launched 2016.

Family: Communications, Earth, Surveillance. Country: France. Launch Vehicles: Thor, R-7, UR-100N, Rokot, Chang Zheng 2D, Soyuz-2-1A, Delta 7320-10C. Launch Sites: Vandenberg SLC2W, Baikonur LC31. Bibliography: 6807, 12988, 12989, 12990, 12991.
Photo Gallery

Globalstar FM1Globalstar FM1
Credit: Manufacturer Image


Gokturk 2Gokturk 2
Credit: Manufacturer Image


Jason 2Jason 2
Credit: Manufacturer Image


SMOSSMOS
Credit: Manufacturer Image



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