N1F Sr

This page no longer updated from 31 October 2001. Latest version can be found at www.astronautix.com

N1F Sr

N1F - Sr - N1F with Sr Lox/LH2 upper stage

5,291 bytes. 79 x 311 pixels.

Family: N. Country: Russia. Status: Cancelled 1974.

The final more modest version of the N1M replaced the fourth and fifth stages of the N1 with the single liquid oxygen/liquid hydrogen Block Sr stage. Development of the Sr stage was from May 1971 until cancellation of the N1 project in May 1974.

Specifications

Liftoff Thrust: 3,976,000 kgf. Total Mass: 2,677,900 kg. Core Diameter: 10.0 m. Total Length: 94.0 m.

Stage Number: 1. 1 x N1F Block A Gross Mass: 2,070,000 kg. Empty Mass: 126,230 kg. Thrust (vac): 5,065,500 kgf. Isp: 331 sec. Burn time: 125 sec. Isp(sl): 297 sec. Diameter: 10.0 m. Span: 15.6 m. Length: 30.0 m. Propellants: Lox/Kerosene No Engines: 30. NK-33
Stage Number: 2. 1 x N1F Block B Gross Mass: 620,000 kg. Empty Mass: 55,700 kg. Thrust (vac): 1,431,682 kgf. Isp: 346 sec. Burn time: 120 sec. Diameter: 6.8 m. Span: 9.8 m. Length: 20.0 m. Propellants: Lox/Kerosene No Engines: 8. NK-43
Stage Number: 3. 1 x N1F Block V Gross Mass: 210,000 kg. Empty Mass: 13,700 kg. Thrust (vac): 164,000 kgf. Isp: 353 sec. Burn time: 370 sec. Diameter: 4.8 m. Span: 6.8 m. Length: 12.0 m. Propellants: Lox/Kerosene No Engines: 4. NK-39
Stage Number: 4. 1 x N1 Block Sr Gross Mass: 77,900 kg. Empty Mass: 11,500 kg. Thrust (vac): 15,080 kgf. Isp: 441 sec. Burn time: 1,910 sec. Diameter: 5.2 m. Span: 5.2 m. Length: 16.5 m. Propellants: Lox/LH2 No Engines: 2. RD-56M

N1F Sr Chronology

- 1971 May -

Block Sr Lox/LH2 stage development begins
The final version of the N1M replaced the fourth and fifth stages of the N1 with the single liquid oxygen/liquid hydrogen Block Sr stage.

1974 May 2 -

Development of Block R LH2/LOX stage begins
Development of the Block Sr for the N1M cancelled; work on the smaller Block R LH2/LOX stage was resumed. This stage was eventually to have been used on the Buran / Vulkan launch vehicles.
Blok SR
Credit: RKK Energia. 18,802 bytes. 149 x 425 pixels.

Bibliography:

89 - Semenov, Yu. P., S P Korolev Space Corporation Energia, RKK Energia, 1994.

Blok SR

N1 Variants - N1 Launch Vehicle Family

Back to Index

Last update 12 March 2001.
Definitions of Technical Terms.
Contact Mark Wade with any corrections or comments.
Conditions for use of drawings, pictures, or other materials from this site..
© Mark Wade, 2001 .