FalconSat 4

FalconSAT-4 (FS 4) was to be a microsatellite developed in the Department of Astronautics that would have carry United States Air Force Academy (USAFA) Physics Department scientific payloads into space.

FS-4 was designed to carry four cold gas thrusters with enough propellant to provide 150-350 m/s of ΔV. Using the thrusters, the satellite would have performed commanded orbital maneuvers, changing the COEs of the orbit and altering the satellite’s time over target (TOT) by 10-30 minutes.

FalconSAT 4 was cancelled early during development when it became clear that the ambitious mission could not be funded. It was replaced by the simpler and cheaper FalconSat 5.