Sierra Nevada STPSat-5 satellite passes milestone

Thursday January 25, 2018 0 comments Tags: Louisville, Sierra Nevada Corporation, Pat Remias, STPSat-5

SPARKS, Nev. -- Sierra Nevada Corporation (SNC) announced its Space Test Program Mission 5 (STPSat-5) satellite moved another step closer to launch, successfully completing its Factory Compatibility Test (FCT) with NASA’s Near-Earth Network and the NASA Ames Multi-Mission Operations Center.Sierra_Nevada_logo

STPSat-5 hosts five Department of Defense (DoD) experiments to test emerging space technologies and is expected to launch this year.  SNC said it completed mechanical integration in September, stacking three functional modules (propulsion, bus and payload deck) to form the complete space vehicle.

Completion of FCT demonstrates both radio frequency (RF) interfaces and end-to-end compatibility of the STPSat-5 space vehicle with the ground systems used for command and control once the vehicle is on-orbit, the company said.

“Completing FCT is an important milestone for the STPSat-5 program,” said Pat Remias, senior director of programs for SNC’s space systems based in Louisville.

“This test demonstrated the ability of NASA’s ground systems to communicate with the spacecraft, command it and receive telemetry – verifying critical mission interfaces.

““We look forward to the next steps to get STPSat-5 into space and provide important data to the DoD,”

With successful completion of the FCT, SNC said the space vehicle is proceeding into final system-level functional and environmental testing, including random vibration and thermal vacuum, prior to its shipment to the launch site.

The STPSat-5 payloads are provided by Space and Naval Warfare Systems Command, the U.S. Air Force Academy, the Naval Research Laboratory, and the Air Force Research Laboratory. 

As prime contractor, SNC designed and built the STPSat-5 spacecraft and integrated the government payloads. 

STPSat-5 is the first mission to fly SNC’s versatile SN-50 bus, which has both Low-Earth Orbit and Geosynchronous-Earth Orbit capabilities. 

SNC said the vehicle is fully compatible with the standard Evolved Expendable Launch Vehicle (EELV) Secondary Payload Adapter and is an ideal choice for a variety of operational, technology demonstration, and science missions.