Sounding rocket. Country: USA. Status: Retired 1974. Two stage vehicle consisting of 1 x M55E1 + 1 x SR19AJ1
Manufacturer: Boeing. Launches: 3. Success Rate: 100.00%. First Launch Date: 1970-03-14. Last Launch Date: 1974-10-24. Launch data is: complete. Apogee: 50 km (31 mi). Liftoff Thrust: 935.000 kN (210,196 lbf). Total Mass: 30,000 kg (66,000 lb). Core Diameter: 1.68 m (5.51 ft). Total Length: 16.00 m (52.00 ft).
- Stage1: 1 x Minuteman-1. Gross Mass: 23,077 kg (50,876 lb). Empty Mass: 2,292 kg (5,052 lb). Motor: 1 x M55/TX-55/Tu-122. Thrust (vac): 791.300 kN (177,891 lbf). Isp: 262 sec. Burn time: 60 sec. Length: 7.49 m (24.57 ft). Diameter: 1.67 m (5.47 ft). Propellants: Solid.
- Stage2: 1 x Minuteman 2-2. Gross Mass: 7,032 kg (15,502 lb). Empty Mass: 795 kg (1,752 lb). Motor: 1 x SR-19. Thrust (vac): 267.700 kN (60,181 lbf). Isp: 288 sec. Burn time: 66 sec. Length: 4.12 m (13.51 ft). Diameter: 1.33 m (4.36 ft). Propellants: Solid.
M55E1 Chronology
1970 March 14 - 18:00 GMT - Cape Canaveral LC31A. Sheltered Base research and development mission Agency: USAF AFSC. Apogee: 1.00 km (0.60 mi).
1974 September 8 - WTR Launch Area -. Test mission Agency: USAF AFSC. Apogee: 50 km (31 mi).
1974 October 24 - WTR Launch Area -. Test mission Agency: USAF AFSC. Apogee: 6.00 km (3.70 mi).
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