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Star 75

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Star-75 Credit: Thiokol

AKA: 105-KS-45,220;TE-M-775-1. Status: In Production. Number: 1 . Thrust: 242.80 kN (54,584 lbf). Gross mass: 8,068 kg (17,786 lb). Unfuelled mass: 565 kg (1,245 lb). Specific impulse: 288 s. Burn time: 105 s. Height: 2.59 m (8.49 ft). Diameter: 1.91 m (6.25 ft).

Some of its features include a slotted, center perforated grain in a graphite epoxy filament wound case. with a semi-submerged nozzle with a carbon/phenolic exit cone, and a consumption wafer-type igniter. Burn Rate: 56 mm/s at 34.0 atm and 15.5 Celsius. Burn Time: 105 sec. Action Time: 107 sec. Thrust: 242.83 kN maximum. Total impulse 2,174,539 kgf-s. Propellant mass fraction 0.93.

Chamber Pressure: 34.00 bar.