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The Rolls-Royce Condor aircraft piston engine was a larger version of the Rolls-Royce Eagle developing up to 675 horsepower (500 kW). The engine first ran in 1918 and a total of 327 engines were recorded as being built.[1]

Condor
Rolls-Royce Condor III on display at the Rolls-Royce Heritage Trust, Derby
Type Piston V-12
Manufacturer Rolls-Royce Limited
First run 1918
Number built 327
Developed from Rolls-Royce Eagle

Variants


Note:[2]

Condor I
(1920-1921) 600 hp, 72 built at Derby.
Condor IA
Alternative designation for Condor II.
Condor II
(1921) 650 hp, revised propeller reduction gear ratio, increased compression ratio (5.17:1). 34 built at Derby.
Condor III
(1923-1927) 650/670 hp, compression ratio 6.5:1, Re-designed connecting rods. 196 built at Derby.
Condor IIIA
(1925) 650/665 hp. Improved main bearing design and material.
Condor IIIB
(1930) 650 hp, 0.477:1 reduction gear, re-designed crankcase and crankshaft.
Condor IV
(1925) 750 hp. Direct-drive, modified engine mounting. 13 built at Derby.
Condor IVA
(1927) 750 hp. Nine built at Derby.
Condor V
(1925) As Condor IIIA with two-stage turbocharger. Run but not flown, one built at Derby.
Condor VII
Direct-drive Condor IIIA, two built at Derby.
Condor C.I.
(1932) 480 hp, compression ignition (diesel), two engines tested and flown.

Compression ignition (diesel) variant


In 1932 the Air Ministry initiated a conversion of the Condor petrol engine to the compression ignition system. The conversion was developed at the Royal Aircraft Establishment, Farnborough, with the co-operation of Rolls-Royce Ltd. Engine layout, bore, and stroke remained the same as for the petrol version; the compression ratio increased to 12.5:1. The more robust construction required to withstand the increased stresses increased the engine weight to 1,504 lbs (682 kg). At its maximum 2,000 rpm the engine developed 500 hp (373 Kw), giving a power/weight ratio of 0.33 hp/lb.[3]

The engine passed the 50-hour civil type test for compression ignition engines, being only the second British engine to do so. The only previous engine to pass this test was the much larger Beardmore Tornado fitted to the R101 airship. The diesel Condor was experimentally flown in a Hawker Horsley to explore the practical operation of a diesel engine in flight.


Applications


Rolls-Royce Condor powered Blackburn Iris seaplane
Rolls-Royce Condor powered Blackburn Iris seaplane

The Condor was used in the following aircraft:


Specifications (Condor III)


Data from Lumsden [4]

General characteristics

Components

Performance


See also


Related development

Comparable engines

Related lists


References



Notes


  1. Lumsden 2003, p.188.
  2. List from Lumsden 2003, pp. 188-190
  3. Flight, 17 November 1932, p. 1094 www.flightglobal.com Retrieved: 5 April 2010
  4. Lumsden 2003, p.189.

Bibliography





На других языках


[de] Rolls-Royce Condor

Der Rolls-Royce Condor war ein Flugmotor des britischen Herstellers Rolls-Royce, der im Jahre 1920 zum ersten Mal erschien. Es handelte sich um einen wassergekühlten Zwölfzylinder-V-Motor mit stehenden, in einem Winkel von 60° gegeneinander geneigten Zylinderbänken. Er entsprach in seiner grundsätzlichen Auslegung dem Rolls-Royce Eagle, hatte aber einen größeren Hubraum. Er wurde unter anderem in Blackburn Iris, R100 und Prototypen der Avro 549 eingesetzt.
- [en] Rolls-Royce Condor

[it] Rolls-Royce Condor

Il Rolls-Royce Condor era un motore aeronautico a V di 60° raffreddato a liquido prodotto dalla britannica Rolls-Royce Limited negli anni venti. Era in pratica una versione ingrandita del Rolls-Royce Eagle e sviluppava 675 hp (503 kW).

[ru] Rolls-Royce Condor

Роллс-Ройс Кондор (англ. Rolls-Royce Condor) — британский поршневой авиационный двигатель, представлявший собой увеличенную версию Eagle объёмом 35,03 л. (2137,5 кубич. дюйма) и мощностью 750 л.с. (559 кВт). Первый запуск двигателя состоялся в 1918 г., всего было построено 327 шт[1].



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