Moorabbin Air Museum

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Armstrong Siddeley Cheetah

Picture
The Armstrong Siddeley company was formed in 1919 and was a British manufacturer of luxury cars and later, aircraft engines. In 1935 J D Siddeley was bought out by the Hawker Aircraft Company to form Hawker Siddeley and in 1960 the aircraft engine division was merged with Bristol Aero Engines to form Bristol Siddeley, which was taken over by Rolls Royce in 1966.

Armstrong Siddeley had produced a successful range of low and mid power radial engines prior to World War II including the 5 cylinder Genet in 88 and 110HP versions, the 5 cylinder 165HP Mongoose, the 7 cylinder 235HP Lynx and Cheetah Engines, and the double row Leopard, Jaguar and Panther.

While all of the Armstrong Siddeley radial engines were named after big cats, their post war jet engines were named after snakes and included the Viper engine developed for the GAF Jindervik, and the Double Mamba turboprop engine used in the Fairey Gannet anti submarine aircraft.

The Armstrong Siddeley Cheetah is a mid range, 7-cylinder, air cooled 295 horsepower radial engine, and is a pre-war and wartime product of the British Armstrong Siddeley company.

The Cheetah engine was designed by Armstrong Siddeley in 1930 and had evolved from the 7 cylinder Lynx radial of 1920 originally being known as the Lynx Major.  

It was used primarily on prewar British military aircraft, including the Avro 626 biplane trainer and most significantly the Avro Anson monoplane bomber which in 1935 was Britains first twin engined aircraft with retractable undercarriage, achieving a production run of over 10,000 airframes in England and Canada.

The Cheetah engine was the first engine to be certified for a minium of 1200 hours between overhauls. Later models built during WW2 were supercharged and fitted to the Avro Anson and Airspeed Oxford twin engined trainers.
 
The Cheetah engine saw extensive service in Australia in 48 prewar Anson GR1 reconnaissance bomber aircraft delivered in 1936, and later over 971 wartime Avro Anson's mark 1 (Cheetah IX) and 391 Airspeed Oxford twin engined trainers (Cheetah X) during WW2 imported for the Empire Air Training Scheme (EATS) program in Australia, and in total over 35,000 Cheetahs were produced.

Interesting post war use of the Cheetah engine was in the Bennet P-11 AirTruck agricultural prototype in New Zealand, the Percival Provest prototype and the Percival EP-9 Cropduster in the UK.

The Museum's Cheetah is a mark IX as fitted to the many Avro Ansons that saw service with the RAAF during WW2 and many flew as post war feeder liners and transport aircraft. 


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TECHNICAL DATA


Cylinders

Bore x Stroke

Swept Volume

Maximum Power

Weight

Carburettor Fuel System



7 cylinder air-cooled radial poppet valve direct drive engine

5.3 x 5 inches                           (133 x 127 mm)

834 cubic inches                     (13.7 litres)

355 HP     @ 2,425 rpm

556 lbs                                       (253 Kg)

With Centrifugal Supercharger
 © 2022 Australian Aircraft Restoration Group. All Rights Reserved.
  • Home
  • News
  • History
  • Birthdays & Functions
  • Events
  • membership
  • Museum Collection
    • ENGINES >
      • ADC Cirrus II
      • ARMSTRONG SIDDELEY >
        • Armstrong Siddeley Genet
        • Armstrong Siddeley Python
        • Armstrong Siddeley Double Mamba
        • Armstrong Siddeley Cheetah
      • Bristol Hercules
      • J.A.P. V4 Engine (1910)
      • Junkers Jumo
      • Kelly and Lewis V8 (1915)
      • PRATT AND WHITNEY >
        • Pratt & Whitney R1340 Wasp
        • Pratt & Whitney R1830 Twin Wasp
        • Pratt & Whitney R2000 Twin Wasp
        • Microturbo Cougar 022 Turbojet
      • ROLLS ROYCE >
        • Rolls Royce Avon
        • Rolls Royce Dart
        • Rolls Royce Derwent
        • Rolls Royce Kestrel
        • Rolls Royce Merlin
        • Rolls Royce Nene
      • SNECMA Atar
      • Warner Scarab
    • COMMONWEALTH AIRCRAFT CORPORATION >
      • CAC Avon Sabre A94-910
      • CAC Bell Kiowa Army Helicopter
      • CAC Boomerang A46-25
      • CAC CA31 Trainer
      • CAC Ceres VH-WOT
      • CAC Macchi MB326H A7-054
      • CAC P-51D Mustang
      • CAC Wackett A3-22
      • CAC Pazmany PL4 VH-XAP
      • CAC Winjeel A85-418
      • CAC Wirraway A20-10
    • D.A.P / G.A.F. AIRCRAFT >
      • DAP Mk21 Beaufighter
      • DAP Beaufort
      • GAF Canberra
      • GAF Jindivik
      • GAF Lincoln
      • GAF Mirage
      • GAF N22 Nomad
    • Naval / Military >
      • AACA 10 Wamira
      • B.E. 2A (Wings Only)
      • Bristol Sycamore
      • Consolidated PBY Catalina
      • Curtiss P-40 Kittyhawk
      • De Havilland DH82A Tiger Moth
      • De Havilland DH115 Vampire
      • De Havilland Sea Venom
      • Fairey Firefly
      • Fairey Gannet
      • General Dynamics F-111C
      • Gloster Meteor
      • Miles Messenger
      • NZ Aerospace Industries CT-4
      • Westland Wessex
    • Commercial Aircraft >
      • Boeing B737-200
      • Bristol Freighter
      • de Havilland DH104 Dove
      • Douglas DC-2
      • Douglas DC-3
      • Douglas DC-9 Flight Simulator
      • Vickers Viscount
    • Other Aircraft >
      • Ansett Link Trainer
      • Auster Aiglet
      • BA Swallow II
      • BAE Systems Kingfisher
      • Cavelier
      • Cessna 310
      • de Havilland Gipsy Moth
      • Dauphin 2 Helicopter
      • Desoutter II
      • Evans VP Volksplane
      • Flying Flea
      • Link Trainer
      • McKenna Heath Parasol
      • Percival Proctor
      • Periera Osprey 2
      • Sanders Veenstra Thermite
      • Southern Cross SC-1
      • ULA Wombat
      • Victa AirTourer 100
      • Yeoman Cropmaster
    • Gliders >
      • Bensen Gyrocopter
      • Duigan Replica >
        • The Duigan Family
        • Ready Models
        • The Duigan History
        • The Duigan History 2
        • The Duigan History 3
        • The Duigan History 4
      • Heron Primary Glider
      • Koltai Ornithopter
      • Skycraft Scout
  • ONLINE SHOP
    • **New**
    • Airplane Toys >
      • Airplane Toys
      • Gliders & Kites
      • Soft Toys
      • R/C Aircraft
    • Apparel
    • MODELS >
      • Starter Model Kits
      • Model Kits
      • Assembled Models
      • Metal Earth Model Kits
    • Building Bricks >
      • Airfix Quick Build
      • Sluban Building Bricks
      • Other Building Bricks
    • Souvenirs >
      • ANAM Souvenirs
      • RAAF Centenary Souvenirs
      • Pencil Sharpeners
      • Bumper Stickers
      • Coffee Mugs
      • Patches
      • Badges
      • Key Rings
      • Posters
    • Childrens Costumes
    • Books >
      • New Books
      • Pre Loved Books
    • Tins
    • Raffle Tickets
    • Gift Passes
    • **Sale**
  • Supporting the Museum
    • Our Supporters
  • Getting There
  • Contact the Museum