AKA: 87.2-KS-17,335;TE-M-711-17. Status: In Production. Thrust: 77.11 kN (17,335 lbf). Gross mass: 2,134 kg (4,704 lb). Unfuelled mass: 124 kg (273 lb). Specific impulse: 286 s. Burn time: 87 s. Diameter: 1.24 m (4.08 ft).
The basic version for STS missions contains 4430 pounds of propellant (an increase of 25 pounds over STAR 48) and has the same 72-inch overall length as the STS version of the STAR 48. The design incorporates the same high-energy propellant and high-strength case as the STAR 48. The semi-submerged nozzle uses a carbon-phenolic exit cone. Total impulse 578,461 kgf-s. Propellant mass fraction 0.942.