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Star 27

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Star-27 Credit: Thiokol

AKA: 34.35-KS-6,010;OIS;TE-M-616. Status: In Production. Thrust: 27.00 kN (6,069 lbf). Gross mass: 361 kg (795 lb). Unfuelled mass: 27 kg (59 lb). Specific impulse: 288 s. Burn time: 34 s. Height: 1.30 m (4.27 ft). Diameter: 0.69 m (2.28 ft).

Apogee motor was developed for the Canadian Communications Research Centre's Communications Technology Satellite, and an offloaded version was qualified and flown successfully. With various propellant loadings and explosive transfer assemblies, it was used for the Broadcast Satellite Experiment, the Geostationary Meteorological Satellite, the Navigation Technology Satellite No. 2, the Global Positioning System Satellites, the P78-1 Satellite, and the Geostationary Operational Environmental Satellite. Charge: 338 kg of AP/HTPB/Al propellant in a 6Al-4V titanium case with a graphite/carbon phenolic nozzle. Propellant mass fraction 0.924. (propellant mass can be reduced up to 25%). Total impulse 96,986 kgf-s.

Propellant Formulation: HTPB.