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STPSat 5

STPSat 5 [SNC]

STPSat 5 is a planned experimental spacecraft for the Department of Defense's Space Test Program (STP).

STPSat-5 will carry a total of four technological or scientific payloads to low-Earth orbit in order to further the DoDís understanding of the space environment. The experiments are chosen by the DoD Space Experiment Review Board.

The satellite is based on SNC's SN-50 bus, which is compatible both with dedicated launch vehicles and ESPA-class secondary launch adaptors.

Following experiments were on board:

  • The Strontium Iodide Radiation Instrumentation (SIRI) experiment, produced by the Naval Research Laboratory (NRL) sought to demonstrate a new gamma radiation sensor in space.
  • The Ram Angle and Magnetic field Sensor (RAMS), also from the NRL, was developed to demonstrate a new attitude determination sensor for small missions.
  • The integrated Miniaturized Electro Static Analyzer Reflight (iMESA-R), from the US Air Force Academy, was built to collect space weather data to aid mitigation for RF communication and navigation signals.
  • The Rad Hard Electronic Memory Experiment (RHEME) was developed by the Air Force Research Laboratory (AFRL) to test new radiation hardened memory solutions.
  • The High Bandwidth Anti-Jam Low Probability of Intercept/Low Probability of Detection (LPI/LPD) Optical Network (HALO-Net) payload from the Space and Naval Warfare Systems Command was designed to demonstrate components of a new satellite laser communications system.

The satellite was launched on Spaceflight Industry's SSO-A multi-satellite launch on a Falcon-9 v1.2 (Block 5) rocket.

Nation: USA
Type / Application: Technology
Operator: US Air Force (USAF) STP (Space Test Program)
Contractors: Sierra Nevada Corporation (SNC)
Configuration: SN-50 bus
Propulsion: 4 cold gas N2 thrusters
Power: 2 deployable solar arrays, batteries
Mass: ~115 kg
Orbit: 573 km × 591 km, 97.77į
Satellite COSPAR Date LS Launch Vehicle Remarks
STPSat 5 2018-099E 03.12.2018 Va SLC-4E Falcon-9 v1.2 (Block 5) with SkySat 14, 15, Eu:CROPIS, FalconSat 6, NEXTSat 1, KazSTSAT, eXCITe, SeeMe, ICEYE X2, BlackSky 2, ESEO, Hawk A, B, C, Capella 1, AISTECHSAT 2, CSIM-FD, Hiber 2, ITASAT 1, Landmapper-BC 4, ORS 7A, 7B, Al-Farabi 2, Astrocast 0.1, Audacy 0, BRIO, Centauri 1, Eaglet 1, Enoch, Flock-3s 1, 2, 3, K2SAT, KazSciSat 1, MinXSS 2, Orbital Reflector, RAAF M1, SeaHawk 1, SNUSAT 2, THEA, VESTA, PW-Sat 2, SNUGLITE, VisionCube, RANGE A, B, Elysium-Star 2, ExseedSat 1, Fox 1C, Irvine 02, JY1-Sat, KNACKSAT, MOVE 2, SpaceBEE 5, 6, 7, Suomi-100, WeissSat 1, Sirion Pathfinder 2, OrbWeaver 1, 2, SPAWAR-CAL O, OR, R
Further STP missions:

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