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MDS 1 (Tsubasa)


MDS 1 (Mission Demonstration Satellite 1), renamed Tsubasa after launch, is a Japanese [NASDA] satellite that was launched by a H-2A-2024 rocket from Tanegashima Space Center at 02:32 UT on 4 February 2002. It was renamed Tsubasa (meaning Wings) after the successful launch. The 480 kg satellite is intended to test the durability of commercially available semiconductors, solar batteries and computers. It is spin stabilized around the sun pointing axis.

Experiments on MDS 1 are:

  • Demonstration of Commercial Devices
    - Commercial Semiconductor Devices (CSD) 
    - Terrestrial Solar Cells (TSC)
  • Demonstration of Components 
    - Parallel Computer System (PCS)
    - Common Pressure Vessel type battery (CPV)
    - Solid State data Recorder (SSR)
  • Space Environment Data Acquisition equipment (SEDA)
Nation: Japan
Type / Application: Technology
Operator: NASDA
Contractors: NEC
Configuration: box shaped, spin stabilized
Power: 2 deployabel solar panels, batteries
Mass: 449 kg
Orbit: 500 km × 35696 km, 28.5
Satellite COSPAR Date LS Launch Vehicle Remarks
MDS 1 (Tsubasa) 2002-003A 04.02.2002 Ta YLP-1 H-2A-2024 with VEP 3, DASH
Further MDS missions:

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