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Rolls-Royce Falcon

April 12, 2024

The Rolls-Royce Falcon is an aero engine developed in 1915. It was a smaller version of the Rolls-Royce Eagle, a liquid-cooled V-12 of 867 cu in (14.2 L) capacity. Fitted to many British World War I-era aircraft, production ceased in 1927. The Falcon was designed by R.W. Harvey-Bailey.[1]

Falcon
Preserved Rolls-Royce Falcon III at the Shuttleworth Collection
Type V-12 aero engine
Manufacturer Rolls-Royce Limited
First run 1915
Major applications Bristol F.2 Fighter
Blackburn Kangaroo
Number built 2,185
Developed from Rolls-Royce Eagle

An airworthy Falcon survives today and powers a Bristol F.2 Fighter during summer displays.

Design and development edit

Production of the Falcon began in September 1916 and was so successful that it was also manufactured under licence by Brazil Straker in Bristol.[2] Production continued until 1927, by which time 2,185 had been built.[3]

An unusual feature of this engine was the epicyclic propeller reduction gear which contained a clutch designed to limit the maximum torque, thus protecting the reduction gears.[4]

The Falcon was notably used in the Bristol F.2 Fighter and Blackburn Kangaroo bomber.

Variants edit

Note:[5]

Falcon I (Rolls-Royce 190 hp Mk I)
(1916-17), 230 hp, 250 engines produced in both left- and right-hand tractor versions.
Falcon II (Rolls-Royce 190 hp Mk II)
(1917), 253 hp, carburettor size increased. 250 built at Derby.
Falcon III (Rolls-Royce 190 hp Mk III)
(1917-1927), 285 hp, increased compression ratio (5.3:1), twin carburettors replaced with four Rolls-Royce/Claudel-Hobson units. 1,685 built at Derby.

Applications edit

List from Guttery and Lumsden:[3][4]

Survivors edit

Bristol F.2B Fighter, D-8096, is based at the Shuttleworth Collection and is powered by a Falcon III, this aircraft flies regularly in summer.[6]

Engines on display edit

Specifications (Falcon III) edit

 

Data from Jane's[7] and Lumsden.[3]

General characteristics

  • Type: 12-cylinder liquid-cooled 60 deg. Vee aircraft piston engine
  • Bore: 4 in (101.6 mm)
  • Stroke: 5.75 in (146 mm)
  • Displacement: 866.5 in³ (14.2 L)
  • Length: 68 in (1,727 mm)
  • Width: 40.3 in (1,024 mm)
  • Height: 37.2 in (945 mm)
  • Dry weight: 715 lb (324 kg)

Components

  • Valvetrain: Overhead camshaft, two valves per cylinder
  • Fuel system: Four Rolls-Royce/Claudel-Hobson carburettors
  • Fuel type: 40-50 octane petrol (pre-1923)
  • Cooling system: Liquid-cooled

Performance

  • Power output: 288 hp (215 kW) at 2,300 rpm at sea level
  • Compression ratio: 5.3:1
  • Fuel consumption: 18.5 Imp gal/hr (84 L/hr)
  • Oil consumption: 0.75 Imp gal/hr (3.4 L/hr)
  • Power-to-weight ratio: 0.4 hp/lb (0.66 kW/kg)

See also edit

Related development

Related lists

References edit

Notes edit

  1. ^ "World Encyclopedia of Aero Engines - 5th edition" by Bill Gunston, Sutton Publishing, 2006, p.185
  2. ^ Pugh 2001, p.82.
  3. ^ a b c Lumsden 2003, p.188.
  4. ^ a b Guttery 1969, p.27.
  5. ^ Alternate designations in italics.
  6. ^ Shuttleworth Collection - Bristol Fighter www.shuttleworth.org. Retrieved: 13 December 2017
  7. ^ Jane's 1989, p.312.

Bibliography edit

  • Guttery, T.E. The Shuttleworth Collection. London: Wm. Carling & Co, 1969. ISBN 0-901319-01-5
  • Jane's Fighting Aircraft of World War I. London. Studio Editions Ltd, 1993. ISBN 1-85170-347-0
  • Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
  • Pugh, Peter. The Magic of a Name - The Rolls-Royce Story: The First 40 Years. Duxford, Cambridge: Icon Books, 2001. ISBN 1-84046-151-9.

External links edit

 
Wikimedia Commons has media related to Rolls-Royce Falcon.

    April 12, 2024
    rolls, royce, falcon, aero, engine, developed, 1915, smaller, version, rolls, royce, eagle, liquid, cooled, capacity, fitted, many, british, world, aircraft, production, ceased, 1927, falcon, designed, harvey, bailey, falconpreserved, shuttleworth, collectiont. The Rolls Royce Falcon is an aero engine developed in 1915 It was a smaller version of the Rolls Royce Eagle a liquid cooled V 12 of 867 cu in 14 2 L capacity Fitted to many British World War I era aircraft production ceased in 1927 The Falcon was designed by R W Harvey Bailey 1 FalconPreserved Rolls Royce Falcon III at the Shuttleworth CollectionType V 12 aero engineManufacturer Rolls Royce LimitedFirst run 1915Major applications Bristol F 2 FighterBlackburn KangarooNumber built 2 185Developed from Rolls Royce EagleAn airworthy Falcon survives today and powers a Bristol F 2 Fighter during summer displays Contents 1 Design and development 2 Variants 3 Applications 4 Survivors 5 Engines on display 6 Specifications Falcon III 6 1 General characteristics 6 2 Components 6 3 Performance 7 See also 8 References 8 1 Notes 8 2 Bibliography 9 External linksDesign and development editProduction of the Falcon began in September 1916 and was so successful that it was also manufactured under licence by Brazil Straker in Bristol 2 Production continued until 1927 by which time 2 185 had been built 3 An unusual feature of this engine was the epicyclic propeller reduction gear which contained a clutch designed to limit the maximum torque thus protecting the reduction gears 4 The Falcon was notably used in the Bristol F 2 Fighter and Blackburn Kangaroo bomber Variants editNote 5 Falcon I Rolls Royce 190 hp Mk I 1916 17 230 hp 250 engines produced in both left and right hand tractor versions Falcon II Rolls Royce 190 hp Mk II 1917 253 hp carburettor size increased 250 built at Derby Falcon III Rolls Royce 190 hp Mk III 1917 1927 285 hp increased compression ratio 5 3 1 twin carburettors replaced with four Rolls Royce Claudel Hobson units 1 685 built at Derby Applications editList from Guttery and Lumsden 3 4 Armstrong Whitworth F K 12 Avro 523C Pike Avro 529 Blackburn G P Seaplane Blackburn Kangaroo Blackburn Sprat Bristol Type 12 F 2A Bristol Type 27 F 2B Coupe Bristol F 2 Fighter Bristol Type 86 Greek Tourer Bristol Type 96 Curtiss H 12 de Havilland DH 37 Fairey F 2 Fairey N 9 Martinsyde F 3 Martinsyde R G Martinsyde Buzzard Parnall Perch Royal Aircraft Factory F E 2 Royal Aircraft Factory R E 7 Vickers F B 14 Vickers Viking Vickers Vendace Vickers Vedette Westland Limousine Westland WizardSurvivors editBristol F 2B Fighter D 8096 is based at the Shuttleworth Collection and is powered by a Falcon III this aircraft flies regularly in summer 6 Engines on display editA Rolls Royce Falcon is on public display at the Shuttleworth Collection Bedfordshire A Rolls Royce Falcon is displayed at the Rolls Royce Heritage Trust Collection Derby A Rolls Royce Falcon is displayed at the South African Air Force Museum Port ElizabethSpecifications Falcon III edit nbsp Data from Jane s 7 and Lumsden 3 General characteristics Type 12 cylinder liquid cooled 60 deg Vee aircraft piston engine Bore 4 in 101 6 mm Stroke 5 75 in 146 mm Displacement 866 5 in 14 2 L Length 68 in 1 727 mm Width 40 3 in 1 024 mm Height 37 2 in 945 mm Dry weight 715 lb 324 kg Components Valvetrain Overhead camshaft two valves per cylinder Fuel system Four Rolls Royce Claudel Hobson carburettors Fuel type 40 50 octane petrol pre 1923 Cooling system Liquid cooledPerformance Power output 288 hp 215 kW at 2 300 rpm at sea level Compression ratio 5 3 1 Fuel consumption 18 5 Imp gal hr 84 L hr Oil consumption 0 75 Imp gal hr 3 4 L hr Power to weight ratio 0 4 hp lb 0 66 kW kg See also editRolls Royce aircraft piston enginesRelated development Rolls Royce EagleRelated lists List of aircraft enginesReferences editNotes edit World Encyclopedia of Aero Engines 5th edition by Bill Gunston Sutton Publishing 2006 p 185 Pugh 2001 p 82 a b c Lumsden 2003 p 188 a b Guttery 1969 p 27 Alternate designations in italics Shuttleworth Collection Bristol Fighter www shuttleworth org Retrieved 13 December 2017 Jane s 1989 p 312 Bibliography edit Guttery T E The Shuttleworth Collection London Wm Carling amp Co 1969 ISBN 0 901319 01 5 Jane s Fighting Aircraft of World War I London Studio Editions Ltd 1993 ISBN 1 85170 347 0 Lumsden Alec British Piston Engines and their Aircraft Marlborough Wiltshire Airlife Publishing 2003 ISBN 1 85310 294 6 Pugh Peter The Magic of a Name The Rolls Royce Story The First 40 Years Duxford Cambridge Icon Books 2001 ISBN 1 84046 151 9 External links edit nbsp Wikimedia Commons has media related to Rolls Royce Falcon Photo of a Rolls Royce Falcon at enginehistory org Retrieved from https en wikipedia org w index php title Rolls Royce Falcon amp oldid 1192624587, wikipedia, wiki, book, books, library,

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