Shuttle pallet satellite

The shuttle pallet satellite was a satellite bus designed to be deployed and then retrieved for return to Earth on NASA's Space Shuttle. It carried a variety of payloads both scientific and military in nature.

CRISTA-SPAS II in the payload bay of Space Shuttle Discovery before launch of the STS-85 mission

It was made by Messerschmitt-Bölkow-Blohm and first flew in 1983. It was carried for the first time during the STS-7 mission and called SPAS-01 carrying 10 payloads[1]. It flew again on the STS-39 mission in 1991 called IBSS-SPAS(Infrared Background Signature Survey - Shuttle Palette Satellite) for the DOD testing various ballistic missile detection sensors[2].

SPAS flew for the third time with the STS-51 mission in 1991 called ORFEUS-SPAS (Orbiting & Retrievable Far & Extreme UV Spectrometer - Shuttle Palette Satellite) with ultraviolet instruments. ORFEUS-SPAS was flown again on the STS-80 mission[3].

SPAS was flown for the second to last time with the CRISTA-SPAS (Cryogenic Infrared Spectrometers & Telescopes for the Atmosphere - Shuttle Palette Satellite) payload on STS-66 in 1994 mounting several infrared sensors looking at the Earths atmosphere, and that payload flew again on STS-85 in 1997[4] .

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References

  1. "SPAS 01". space.skyrocket.de. Retrieved 2018-11-09.
  2. "IBSS-SPAS". space.skyrocket.de. Retrieved 2018-11-09.
  3. "ORFEUS-SPAS 1, 2". space.skyrocket.de. Retrieved 2018-11-09.
  4. "CRISTA-SPAS 1, 2". space.skyrocket.de. Retrieved 2018-11-09.
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