Star 20B

Star-20B
Credit - Thiokol

Manufacturer Name: TE-M-604-4. Other Designations: 30.1-KS-5,500. Designer: Thiokol. Gross Mass: 307 kg (676 lb). Empty Mass: 33 kg (72 lb). Propellants: Solid. Thrust(vac): 24.467 kN (5,500 lbf). Isp: 289 sec. Burn time: 30 sec. Diameter: 0.50 m (1.64 ft). Chambers: 1. Country: USA. Status: In Production. Flown: 11.

A modified version of the STAR 20. The STAR 20B motor has increased case structural capability over the standard STAR 20. A filament-wound, fiberglass-epoxy case contains the CTPB propellant grain. The lightweight, external nozzle is a composite of graphite, plastic, and steel. The consumable pyrogen igniter is actuated by two SBASI zero-time-delay initiators. Total impulse 79,155 kgf-s. Propellant mass fraction 0.893.

Bibliography and Further Reading

Thiokol Corporation Web Site, As of May, 1999. Accessed at: http://www.thiokol.com.

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