Star 48B s
Star-48B Short
Credit - Thiokol
Manufacturer Name: TE-M-711-17. Other Designations: 87.2-KS-17,335. Designer: Thiokol. Gross Mass: 2,134 kg (4,704 lb). Empty Mass: 124 kg (273 lb). Propellants: Solid. Thrust(vac): 77.109 kN (17,335 lbf). Isp: 286 sec. Burn time: 87 sec. Diameter: 1.24 m (4.08 ft). Chambers: 1. Country: USA. Status: In Production.

Short nozzle upper-stage motor is qualified for the McDonnell Douglas Payload Assist Module (PAM) Space Transportation System (STS). 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.

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