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STEP 1 (P90-1)


STEP 1 (Space Test Experiment Platform 1) was a technology demonstration satellite flown under the Space Test Program (STP).

It carried radio propagation experiments, a plasma environment analyser, the CHAMPION ionosphere-magnetosphere coupling experiment, and an accelerometer and mass spectrometer to study the upper atmosphere.. The satellite carried a range of six 5 m long deployable antennas and booms. The CTA LEOStar based spacecraft was 3-axis stabilized and the mission life time was to be three years.

The satellite was carried on the maiden flight on the Pegasus-XL on the 27 June 1994, but failed to reach orbit.

Nation: USA
Type / Application: Experimental
Operator: US Air Force (USAF) STP (Space Test Program)
Contractors: TRW, CTA → Orbital Sciences Corporation (OSC) (Bus)
Configuration: LEOStar
Propulsion: ?
Power: 4 deployable fixed solar arrays, batteries
Lifetime: 3 years
Mass: 352 kg
Satellite COSPAR Date LS Launch Vehicle Remarks
STEP 1 (P90-1) 1994-F03 28.06.1994 Va, L-1011, RW30/12 F Pegasus-XL


Further STP missions:

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