Armstrong Siddeley Screamer

Country of origin Britain
Date March 1954 (first static test)
Manufacturer Armstrong Siddeley
Liquid-fuel engine
Propellant liquid oxygen (LOX) / methanol
Pumps Turbine-driven
Thrust 8,000 lbf

The Armstrong Siddeley Screamer was a rocket engine intended to power the Avro 720 manned interceptor aircraft (Avro's competitor to the Saunders-Roe SR.53 for a rocket-powered interceptor). Thrust was variable, up to a maximum of 8,000 lbf.[1][2][3]

Work on the Screamer started in 1946, with the first static test at Armstrong Siddeley's rocket plant at Ansty in March 1954.[4] The programme was cancelled, as was the Avro 720, before flight testing.[5]

In 1951, a Gloster Meteor F.8 was experimentally fitted with a Screamer mounted below the fuselage.[1][6]

The Screamer project was cancelled in March 1956, at a reported total cost of £650,000.[7]


  1. 1 2 "Armstrong Siddeley Screamer". Flight (PDF): 160–164. 27 July 1956.
  2. Allen, S., RAeS (7 Dec 1951). "Rockets for Aircraft Propulsion". The Aeroplane.
  3. Allen, S., RAeS (19 October 1956). "ROCKET-MOTOR DESIGN:A Paper by the Chief Engineer of Armstrong Siddeley Motors (Rocket Division)". Flight (PDF): 637–638. Retrieved 27 November 2014.
  4. "Scorpion and Screamer" (PDF). Flight: 76. 13 July 1956.
  5. C.N. Hill (2001). A Vertical Empire: The History of the UK Rocket and Space Programme, 1950-1971. Imperial College Press. p. 28. ISBN 1-86094-268-7.
  6. Keith Meggs. "A Man and his Machines".
  7. "Cancelled projects: the list up-dated" (PDF). Flight: 262. 17 August 1967.

External links

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