Rolls-Royce Vulture

The Rolls -Royce Vulture is one of the last piston-driven aircraft engines built by Rolls- Royce. It was developed in the late 1930s to the 1940s. Its development was not completed, so he usually suffered from overheating and lubrication problems. He never reached the mass production.

The name of the engine comes under former Rolls- Royce tradition of the bird world, the family of vultures.

History

Technically, it is related to the Peregrine, which is a liquid-cooled four-stroke V12 engine. Put simply, there is the Vulture of two such Peregrine engines, the cylinder bank angle was widened to 90 ° and the work on a common crankshaft with six crank pin. Since the Vulture is a symmetric X motor with equal angles of 90 °, it really counts to the number of radial engines - six 4 -star successively in series result in cylinder 24.

The crankshaft is six times cranked - for each of the six four- star once. The offset angle of the individual offsets be as in -line six cylinder 0 °, 120 °, 240 °, 240 °, 120 °, 0 °. So even firing intervals are reached ( every 30 ° of crankshaft rotation ignition ).

He was part of an arms program, engines with more power than the already established Merlin from Rolls -Royce to create ( 1,100 hp or 820 kW in early production versions) - a program that produced also creations like the Napier Sabre.

During the Second World War was planned, the Vulture as a drive for British bombers ( such as the Avro Manchester ) and fighters (like the Hawker Tornado ) use.

The rapid development of other, simpler engines (such as the V12 Rolls -Royce Griffon ) or turboprop drives the development of promising Vulture was abandoned.

There are few examples of other symmetrical X24 - units (straight radial engines with six 4- stars ). To them, the 2,660 -hp Daimler -Benz DB 604 and the 1,500 hp Allison X -4520 count with 74 liters capacity from the year 1928.

Specifications

  • Engine type: water-cooled, turbocharged 24-cylinder four-stroke engine sequence star ( 6 × 4 stars)
  • Stroke: 140 mm
  • Bore: 127 mm
  • Displacement: 42.56 liters
  • Power: to 1470 kW or 2000 HP
  • Specific power: 35 kW / liter and 47 hp / l
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