- Napier Eland
-
Eland 
Napier Eland on display at the Helicopter Museum (Weston). Type Turboshaft/turboprop aero-engine Manufacturer Napier & Son First run 1953 Major applications Fairey Rotodyne
Convair CV-340The Napier Eland was a British turboshaft or turboprop gas-turbine engine built by Napier & Son in the early 1950s. Production of the Eland ceased in 1961 when the Napier company was taken over by Rolls-Royce.[1]
Contents
Design and development
The Eland was first tested in 1953 in a Vickers Varsity aircraft[2]. Further flight proving was carried out from 1955 using the first production Airspeed Ambassador 2.[3] The Eland was dropped from production when Napiers was acquired by Rolls-Royce Limited in 1961[2].
The Eland was used to power various aircraft including the Westland Westminster heavy-lift helicopter, the Canadair CL-66; a turbine-powered version of the Convair CV-340 for the Canadian military[2](later converted to Allison T-56 propjets after a number of engine failures), and the Fairey Rotodyne gyroplane. In the Rotodyne, the Eland provided the power for the tractor propellors for forward flight and acted as a gas generator to feed the rotor tipjets for vertical flight[4].
Applications
Napier's Eland testbed Airspeed Ambassador at Farnborough SBAC Show 1955
Turboshaft
Turboprop
- Airspeed Ambassador
- Canadair CC-109 Cosmopolitan
- Canadair CL-66
- Convair CV-540
- Fairey Rotodyne
- Vickers Varsity (one aircraft as an engine test bed in 1954)
Engines on display
A turboshaft Eland is on display at the The Helicopter Museum, Weston-super-Mare.[5]
Specifications (Eland N.El.6)
Data from Flight [6]
General characteristics
- Type: Single-shaft turboprop
- Length: 120 in (3,048 mm)
- Diameter: 36 in (914 mm)
- Dry weight: 1,735 lb (787 kg)
Components
- Compressor: 10-stage axial flow
- Combustors: 6 chambers
- Turbine: 3-stage
- Fuel type: Jet fuel
Performance
- Maximum power output: 3,500 eshp (2,610 kW)
- Overall pressure ratio: 7:1
- Specific fuel consumption: 0.595 lb/hr/eshp
- Thrust-to-weight ratio: 2.0 eshp/lb (3.3 kW/kg)
See also
- Comparable engines
- Allison T56
- Bristol Proteus
- Ivchenko AI-20
- Lycoming T55
- Rolls-Royce Tyne
- Related lists
References
Notes
- ^ Gunston 1989, p.107.
- ^ a b c "Napier Eland 504A", Atlantic Canada Aviation Museum, http://acam.ednet.ns.ca/engines/napier.htm, retrieved 2008-05-26
- ^ Jackson 1973, p. 26
- ^ "A History of Fairey Engineering" (doc), WFEL.co.uk, http://www.wfel.co.uk/corp_dloads/AHistoryofFaireyEngineerin.doc, retrieved 2008-05-26
- ^ The Helicopter Museum - Fairey Rotodyne Retrieved: 28 July 2009
- ^ Flightglobal archive - Flight, August 1958 Retrieved: 28 July 2009
Bibliography
- Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
- Jackson, A.J. (1973), British Civil Aircraft since 1919 - Volume I, Putnam & Company Ltd, ISBN 0-370-10006-9
External links
Napier aero engines Piston engines Turboprop / Turboshaft Coupled Naiad · Eland · Gazelle · Naiad
Turbo-compound Gas-generator Rocket Lists relating to aviation General Aircraft (manufacturers) · Aircraft engines (manufacturers) · Airlines (defunct) · Airports · Civil authorities · Museums · Registration prefixes · Rotorcraft (manufacturers) · TimelineMilitary Accidents/incidents Records Categories:- Aircraft turboshaft engines 1950-1959
- Napier aircraft engines
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