N1 MOK

Ultimate derivative of N1. Single-stage-to-orbit vehicle based on N1 Block A. Propellants changed to LH2/LOX, 16 x modified NK-33 engines + 4 Liquid Air Cycle Engine Liquid Air/LH2 boosters. All figures estimated based on tank volume of Block A and delivery of 90,000 kg payload to 450 km / 97.5 degree MKBS orbit. Briefly described in RKK Energia official history and in some detail in Peter James'

1974

Manufacturer: Korolev. Liftoff Thrust: 31,928.600 kN (7,177,835 lbf). Total Mass: 1,200,000 kg (2,600,000 lb). Core Diameter: 10.00 m (32.00 ft). Total Length: 36.00 m (118.00 ft).

• Stage Number: 1. 1 x Stage: N1-MOK. Gross Mass: 1,200,000 kg (2,600,000 lb). Empty Mass: 300,000 kg (660,000 lb). Thrust (vac): 15,600.000 kN (3,507,000 lbf). Isp: 430 sec. Burn time: 410 sec. Isp(sl): 875 sec. Diameter: 10.00 m (32.00 ft). Span: 17.00 m (55.00 ft). Length: 30.00 m (98.00 ft). Propellants: Air/Lox/LH2. No Engines: 16. Engine: NK-33 LH2 Mod + 4 x LACE. Status: Study 1974. Ultimate derivative of N1 Block A: Propellants changed to LH2/LOX, 16 x modified NK-33 engines + 4 Liquid Air Cycle Engine Liquid Air/LH2 boosters. All figures estimated based on tank volume of Block A and delivery of 90,000 kg payload to 400 kg MKBS orb

• Semenov, Yu. P., S P Korolev Space Corporation Energia, RKK Energia, 1994. ISBN: 1896522815. Dual English/Russian language picture book of the history of the Energia Corporation. Many unique photos and drawings of Korolev's rockets and spacecraft. Republished by Apogee books in 2000. More at amazon.com...