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The STP-H3 (Space Test Program - Houston 3) is a combo of experiments to be hosted on the International Space Station (ISS).

Following experiments are mounted on STP-H3:

  • MHTEX (AFRL) performed a flight qualification of advanced Capillary Pumped Loop without starting pump. It demonstrated long duration steady state operation.
  • Canary (USAFA) Validated theory of plasma signatures in space environment. It observed 70+ events including Space Shuttle, Soyuz, Progress, ATV, HTV and Dragon vehicle dockings and undockings.
  • VADER (AFRL) tested 10 Variable Emissivity Devices. One observed to be damaged on orbit, others showed mixed performance.
  • DISC (NRL) has proven the concept of miniature star tracker. It collected over 100 Star Tracker images.

The STP-H3 package was launched on Endeavour F25 (STS 134). STP-H3 was installed on ELC-3. It was disposed of with HTV 4.

Nation: USA
Type / Application: Technology
Operator: US Air Force (USAF), STP (Space Test Program)
Configuration: Attached ISS payload
Propulsion: None
Power: Via ISS
Orbit: 400 km × 400 km, 51.6 (typical)
Satellite COSPAR Date LS Launch Vehicle Remarks
STP-H3 N/A 16.05.2011 CCK LC-39A Shuttle with Endeavour F25 (STS 134), AMS 02, ELC 3


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