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IRCB (S73-7)

IRCB (Infra-Red Calibration Balloon) was an 66 cm diameter inflatable calibration sphere orbited in the Space Test Program. It was a piggy-back payload on a KH-9 (Hexagon) spysat launch. The IRCB used a LPC-509 solid rocket motor to reach its own orbit. It was inflated upon separation from the launch vehicle. It was to serve as a calibration target for various other electromagnetic remote sensing equipment. Internal battery power was provided.

Nation: USA
Type / Application: Experimental
Operator: US Air Force (USAF) STP (Space Test Program)
Power: Batteries
Mass: 184 kg
Orbit: 786 km × 826 km, 94.60
Satellite COSPAR Date LS Launch Vehicle Remarks
IRCB (S73-7) 1974-020B 10.04.1974 Va SLC-4E Titan-3D [LPC-509] with KH-9 8, Tophat 2
Further STP missions:

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