 | N2
Credit - © Mark Wade
|
Orbital launch vehicle. Year: 1964. Family: N. Country: Russia. Status: Study 1962. Article Number: 11A53. Missile: 11A53. It was originally planned the N1 would form the basis of a family of launch vehicles that could replace existing ICBM-derived boosters. The N11 would use the second, third, and fourth stages of the N1. This would give it a lift-off mass of 700 tonnes and a 20 tonne payload into low earth orbit. It could replace Chelomei's Proton launch vehicle in the medium-lift role. Manufacturer: Korolev. LEO Payload: 20,000 kg (44,000 lb). to: 300 km Orbit. at: 51.60 degrees. Liftoff Thrust: 10,610.000 kN (2,385,220 lbf). Total Mass: 700,000 kg (1,540,000 lb). Core Diameter: 9.80 m (32.10 ft). Total Length: 40.00 m (131.00 ft).
Stage Data - N11 - Stage Number: 1. 1 x Stage: N-11 Block A. Gross Mass: 485,000 kg (1,069,000 lb). Empty Mass: 47,000 kg (103,000 lb). Thrust (vac): 11,960.000 kN (2,688,710 lbf). Isp: 330 sec. Burn time: 117 sec. Isp(sl): 293 sec. Diameter: 6.80 m (22.30 ft). Span: 9.80 m (32.10 ft). Length: 20.00 m (65.00 ft). Propellants: Lox/Kerosene. No Engines: 8. Engine: NK-15V. Status: Study 1963. Derived from N1 Block B, with large number of engines and expansion ratio adjusted for sea level operation. Includes 3500 kg Stage 2-Stage 3 interstage.
N11 Chronology 1969 May 29 - Launch Vehicle: N1, N1M, UR-700, N11, UR-100N, MR-UR-100, Proton 8K82K / 11S824. - N1 State Commission Nation: USSR. Program: Lunar L3. Spacecraft: LK, Soyuz 7K-L1A, Soyuz 7K-LOK, Aelita. Over two days a State Commission reviewed all of the conclusions of the N1 3L failure investigation and the readiness of N1 5L for flight. All of the fixes identified to remedy the 3L failure had been incorporated into 5L. It was felt that the behaviour of the systems in fire conditions were understood and appropriate measures had been taken. The wiring had been rerouted and insulated. Barmin wanted the system not to shut down any engines under any conditions during the first 15-20 seconds of flight, so that the booster would clear the pad and there would be no risk of the pad's destruction. But there was no time to develop such measures before the 5L launch; it could only be added in vehicle 6L.Additional Details: N1 State Commission(51176). References: 367.
Bibliography and Further Reading - Vetrov, G S, S. P. Korolev i evo delo, Nauka, Moscow, 1998. ISBN: 5020036846. The collected papers of Soviet Chief Designer Korolev. A tremendous source of new information and insight on the Soviet space program. Russian language. More at amazon.com...
|