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Bristol Siddeley Gamma information


Gamma 201
Country of originBritain
ManufacturerBristol Siddeley
Application1st stage booster
PredecessorArmstrong Siddeley Stentor
SuccessorGamma 301
Liquid-fuel engine
PropellantHydrogen peroxide / kerosene
Mixture ratio8:1 (approx.)
CycleGas-generator
Configuration
Chamber4, gimballed in opposed pairs
Performance
Thrust, sea-level16,400 lbf (73 kN)[1][2]
Gamma 301
Black Knight tail showing engines
Application1st stage booster
PredecessorGamma 201
SuccessorGamma 8
Liquid-fuel engine
PropellantHydrogen peroxide / kerosene
Mixture ratio8:1 (approx.)
CycleGas-generator
Configuration
Chamber4, gimballed in opposed pairs
Performance
Thrust, sea-level17,000–21,600[3] lbf (76–96 kN)-21,000 lbf (93 kN)[4]
Specific impulse250 seconds (2.5 km/s)
Burn time120 seconds
Gamma 2
Gamma 2 rocket engine, used for the second stage
Application2nd stage
PredecessorGamma 301
SuccessorLarch (rocket engine)
Liquid-fuel engine
PropellantHydrogen peroxide / kerosene
CycleGas-generator
Configuration
Chamber2, extended
Performance
Thrust, vacuum68.2 kN (15,300 lbf)[5]
Thrust, sea-level64.60 kN (14,520 lbf)[6]
Burn time113 seconds [7]
Gamma 8
Gamma 8 rocket engine on Black Arrow 1st stage
Application1st stage booster
PredecessorGamma 301
Liquid-fuel engine
PropellantHydrogen peroxide / kerosene
CycleGas-generator
Configuration
Chamber8, gimballed in pairs
Performance
Thrust, sea-level52,785 lbf (234.80 kN)[8]
Burn time125 seconds

The Armstrong Siddeley, later Bristol Siddeley Gamma was a family of rocket engines used in British rocketry, including the Black Knight and Black Arrow launch vehicles. They burned kerosene fuel and hydrogen peroxide. Their construction was based on a common combustion chamber design, used either singly or in clusters of up to eight.

They were developed by Armstrong Siddeley in Coventry, which later became Bristol Siddeley in 1959, and finally Rolls-Royce in 1966.[9]

Engine static testing was carried out at High Down Rocket Test Site, near The Needles on the Isle of Wight (50°39′38.90″N 1°34′38.25″W / 50.6608056°N 1.5772917°W / 50.6608056; -1.5772917).[10][11] (Spadeadam in Cumbria wasn't used for testing until Blue Streak, after Gamma).

  1. ^ "Gamma 201". Astronautix.com. Archived from the original on 13 November 2016. Retrieved 13 November 2016.
  2. ^ gamma engines rocket department dec 1964
  3. ^ Gamma engines Bristol siddeley rocket dep 1964
  4. ^ "Gamma 301". Astronautix.com. Retrieved 13 November 2016.
  5. ^ "Gamma 2". Astronautix.com. Archived from the original on 13 November 2016. Retrieved 13 November 2016.
  6. ^ "Gamma 2". Astronautix.com. Archived from the original on 13 November 2016. Retrieved 13 November 2016.
  7. ^ Black Arrow: Black Arrow, accessdate: 22. Dezember 2023
  8. ^ "Gamma 8". Astronautix.com. Archived from the original on 13 November 2016. Retrieved 13 November 2016.
  9. ^ "Rolls-Royce Heritage: Coventry". Archived from the original on 18 May 2008.
  10. ^ "The High Down Testing Site". www.spaceuk.org. Archived from the original on 16 April 2004.
  11. ^ "Black Knight Testing at The Needles". Archived from the original on 27 March 2008.

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