Rolls-Royce Falcon

The Rolls -Royce Falcon was a liquid-cooled, twelve-cylinder aircraft engine of the British manufacturer Rolls- Royce. It was a V engine with 60 ° bank angle. About an air screw gear ( planetary gear ) with a reduction ratio of 1:1,698, the propeller was driven. With a displacement of 14.2 liters was a smaller version of the Rolls- Royce Eagle ( 20.3 liters). The Falcon engine proved to be extremely reliable and has been incorporated into a variety of aircraft types and also in some airships.

The name of the engine comes under former Rolls- Royce tradition of the bird world, the family of the Falk -like (English: Falcon).

History

The engine was designed in 1915 by Robert William Harvey Bailey and 1916 with 230 been taken in the production of HP performance. For the ignition Watfort two magnets were available, which supplied each with 6 cylinders. The cylinders were arranged in groups of three, but each had its own cooling jacket. The gas exchange of the motor was accomplished by a driven about a vertical shaft overhead camshaft and two overhead valves per cylinder. The mixture preparation was done in two Claudel - Hobson - twin carburettors of 34 mm nominal diameter. The motor is made with both the left and right direction of rotation, with the former, the straight, the latter receiving the odd serial numbers. The number of engines with right of rotation was significantly higher. The production of this first version with the official name Rolls- Royce 190 HP, Mk.I was partially carried out at Brazil Straker. By 1917 250 of which were delivered.

In 1917 the series was changed to an improved version of the Rolls -Royce 190 HP, 253 HP with Mk.II, which differed in the carburetor with a diameter of 38 mm. Also which 250 pieces were made, but only at Rolls -Royce and all with right rotation.

The final production version, Rolls-Royce 190 HP, Mk.III, also came out in 1917, with an output of 285 HP. Apart from increasing the compression four individual carburetors Claudel - Hobson were now used, which required a change of air induction. From this version up to 1927 1685 copies were made ​​.

Applications

United Kingdom United Kingdom

• Avro 529
• Blackburn G. P.
• Bristol F.2
• Fairey F.2
• Fairey N.9
• Martinsyde F.3
• Martinsyde R. G.
• Royal Aircraft Factory R.E.7
• Vickers F.B.14
• Blackburn Kangaroo
• Royal Aircraft Factory F.E.2d
• Blackburn T.R.1
• Bristol Tourer (Type 86)
• De Havilland D.H.37
• Martinsyde Buzzard
• Parnall Perch
• Vickers Viking (Type 16)
• Vickers vendace
• Westland Limousine
• Westland Wizard

Specifications

Mk.I Mk.II Mk.III Bore mm 101.6 101.6 101.6 Stroke mm 146 146 146 Displacement l 14.2 14.2 14.2 Power HP 230 253 285   at min - 1 1800 2000 2250 Compression 5.1:1 5.1:1 5.3:1 Length mm 1727 1727 1656 Width mm 1024 1024 975 Height mm 945 945 1067 Weight kg 295 302 299 swell

• Flight, May 7, 1954.
• Flight, July 27, 1939.
• Jane's All the World 's Aircraft, 1919.
• Alec Lumsden SC: British Piston Aero Engines and Their Aircraft. Airlife, Shrewsbury 1994, ISBN 1-85310-294-6.