Napier Gazelle

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Gazelle
NapierGazelle.JPG
Napier Gazelle at the Royal Air Force Museum London
Type Turboshaft aero engine
Manufacturer D. Napier & Son
First runDecember 1955
Major applications Westland Wessex
Bristol/Westland Belvedere

The Napier Gazelle is a turboshaft helicopter engine that was manufactured by D. Napier & Son in the mid-1950s. In 1961 production was nominally transferred to a joint venture with Rolls-Royce called Napier Aero Engines Limited. [1] But the venture closed two years later. [2]

Contents

Variants

NGa.1
Emergency rating 1,260 shp (940 kW) at 20,400 rpm, 1 hour rating 1,100 shp (820 kW) at 19,800 rpm, Max continuous rating 920 shp (690 kW) at 19,000 rpm [3]
NGa.2
Emergency rating 1,650 shp (1,230 kW) at 20,400 rpm [3]
NGa.2(R)
[4]
NGa.2 series 2
NGa.3
Emergency rating 1,800 shp (1,300 kW) at 20,400 rpm [3]
NGa.4
Emergency rating 2,000 shp (1,500 kW) at 20,400 rpm [3]
NGa.13(R)
[4]
NGa.13 series 2
NGa.18
NGa.22
Mk.101
[4]
Mk.161
[4]
Mk.162
(NGa.13 series 2) [4]
Mk.165
[4]
Gazelle 501
[4]
Gazelle 503
[4]
Gazelle 512
[4]
Gazelle 514
[4]
Gazelle E.219
[4]

Applications

These helicopter engines were used on the Westland Wessex HAS 1 and HAS 3 (other versions of the Wessex had two Rolls-Royce Gnome engines) and the Bristol Belvedere (later Westland Belvedere) transport helicopter.

Engines on display

A preserved Napier Gazelle is on display at the Royal Air Force Museum London. A preserved Napier Gazelle from a Westland Wessex helicopter is on display at the Queensland Air Museum, Caloundra, Australia. A Napier Gazelle is on display at the South Yorkshire Aircraft Museum, Doncaster A further Napier Gazelle is displayed at the Solent Sky Museum, Southampton

Specifications (Gazelle 501 / Mk.101 / NGa.2(R))

Left view, Fleet Air Arm Museum, Australia Napier-Gazelle left.jpg
Left view, Fleet Air Arm Museum, Australia

Data fromJane's All the World's Aircraft 1962-63 and Flightglobal archive. [4] [5]

General characteristics

Components

Performance

See also

Comparable engines

Related lists

Related Research Articles

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References

Notes

  1. "ENGLISH ELECTRIC-ROLLS ROYCE Napier Aero Engines Ltd." Times [London, England] 1 June 1961: 24. The Times Digital Archive. Web. 30 Aug. 2016.
  2. Napier Aero Engines Ltd (closure) Hansard, 8 March 1963 vol 673 cc921-32
  3. 1 2 3 4 Wilkinson, Paul H. (1957). Aircraft engines of the World 1957 (15th ed.). London: Sir Isaac Pitman & Sons Ltd. pp. 154–155.
  4. 1 2 3 4 5 6 7 8 9 10 11 12 Taylor, John W.R. FRHistS. ARAeS (1962). Jane's All the World's Aircraft 1962-63. London: Sampson, Low, Marston & Co Ltd.
  5. Flightglobal online archive

Bibliography

  • Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN   1-85260-163-9
  • Taylor, John W.R. FRHistS. ARAeS (1962). Jane's All the World's Aircraft 1962-63. London: Sampson, Low, Marston & Co Ltd.