SERVIS-2

SERVIS-2
Mission type Technology
Operator USEF
Website USEF - Project SERVIS
Mission duration 1 year
Spacecraft properties
Manufacturer Mitsubishi Electric
Launch mass 740 kilograms (1,630 lb)
Dimensions 2.5 by 10.2 metres (8.2 by 33.5 ft)
Power 1,300 W
Start of mission
Launch date 2 June 2010, 01:59 (2010-06-02UTC01:59Z) UTC
Rocket Rokot/Briz-KM
Launch site Plesetsk 133/3
Contractor Eurockot
Orbital parameters
Reference system Geocentric
Regime Sun-synchronous
Inclination 100.4 degrees

SERVIS-2, or Space Environment Reliability Verification Integrated System 2, is a Japanese technological research satellite which was launched in 2010. It was constructed by Mitsubishi Electric, and will be operated by the Institute for Unmanned Space Experiment Free Flyer, USEF.[1] It follows on from the SERVIS-1 spacecraft, which was launched in 2003.

Launch

The launch of SERVIS-2 was conducted by Eurockot, using a Rokot carrier rocket with a Briz-KM upper stage. The launch occurred from Site 133/3 at the Plesetsk Cosmodrome in Russia. Eurockot, who were also responsible for launching the SERVIS-1 spacecraft, were awarded the contract to launch SERVIS-2 on 21 February 2007.[2]

SERVIS-2 arrived at the Plesetsk Cosmodrome on 26 April 2010.[3] Prior to launch, the spacecraft underwent final testing and fuelling, and was subsequently attached to its launch adaptor on 22 May.[4] This was attached to the upper stage the next day,[5] and the day after that the spacecraft was encapsulated in the payload fairing.[6] Under terminology used by Eurockot, as well as several other launch service providers, the combination of spacecraft, adaptor, upper stage and fairing was designated the Upper Composite.[6] This was transported to the launch pad on 27 May[7] for integration with the first two stages of the rocket.[8] The launch occurred successfully at 01:59 UTC on 2 June 2010.

Spacecraft

SERVIS-2 is a 740-kilogram (1,630 lb) spacecraft, which measures 2.5 by 10.2 metres (8.2 by 33.5 ft). It is intended to conduct experiments related to the demonstration of technology to be used in future missions, particularly research into the use of commercial off-the-shelf equipment. The spacecraft has a design life of one year, and its Solar panels will provide it with at least 1,300 watts of power.[9]

SERVIS-2 operates in a Sun-synchronous low Earth orbit, at an altitude of 1,200 kilometres (750 mi) and an inclination of 100.4 degrees.

Experiments

Nine experiments are being conducted by SERVIS-2. They are mostly described (in Japanese) in a special edition of Uchu Kagaku Gijutsu Rengo Koenkai Koenshu (Proceedings of the Space Sciences and Technology Conference). [9]

Name Full name Description Remarks
LIBA Lithium-Ion (Mn type) Battery system with Automotive Technology
ADMS High Assurance Data Management System [10]
CRAFT Fault-Tolerant Computer with CRAFT System
PPRTU Plug-and-Play Remote Terminal Unit
HPDC High Performance Data Compressor [11]
APE Advanced Positioning Experimental Module [12]
ASM Advanced Satellite Structure Experimental Module [13]
MBW Magnetic Bearing Wheel
MEMS RF-MEMS Experiment Unit

The Commercial Parts Test Unit on SERVIS-2 is carrying 4Mbit and 8Mbit SRAM chips, 256Mbit and 512Mbit DRAM chips, 128kbit SOI SRAM chips made on a 180 nm process, and NOR-type 128Mbit flash memory chips.

See also

References

  1. ↑ Krebs, Gunter. "SERVIS 1, 2". Gunter's Space Page. Retrieved 1 June 2010.
  2. ↑ "SERVIS-2 To Be Launched On Rockot". Space-Travel.com. 22 February 2007. Retrieved 1 June 2010.
  3. ↑ "26 April 2010". Eurockot Launch Services. 26 April 2010. Retrieved 1 June 2010.
  4. ↑ "L-11 / 22 May 2010". Eurockot Launch Services. 22 May 2010. Retrieved 1 June 2010.
  5. ↑ "L-10 / 23 May 2010". Eurockot Launch Services. 23 May 2010. Retrieved 1 June 2010.
  6. 1 2 "L-9 / 24 May 2010". Eurockot Launch Services. 24 May 2010. Retrieved 1 June 2010.
  7. ↑ "L-6 / 27 May 2010". Eurockot Launch Services. 27 May 2010. Retrieved 1 June 2010.
  8. ↑ Ракета–носитель "Рокот" готовится к запуску (in Russian). Russian Federal Space Agency. 27 May 2010. Retrieved 1 June 2010.
  9. 1 2 "Project SERVIS". USEF. Retrieved 1 June 2010.
  10. ↑ http://sciencelinks.jp/j-east/article/200706/000020070606A0987546.php
  11. ↑ http://sciencelinks.jp/j-east/article/200706/000020070606A0987549.php
  12. ↑ http://sciencelinks.jp/j-east/article/200706/000020070606A0987550.php
  13. ↑ http://sciencelinks.jp/j-east/article/200706/000020070606A0987551.php
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