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Contents

   



(Top)
 


1 Variants  





2 Applications  





3 Engines on display  





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



4.1  General characteristics  





4.2  Components  





4.3  Performance  







5 See also  





6 References  



6.1  Notes  





6.2  Bibliography  







7 External links  














Napier Gazelle






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From Wikipedia, the free encyclopedia
 


Gazelle
Napier Gazelle at the Royal Air Force Museum London
Type Turboshaft aero engine
Manufacturer D. Napier & Son
First run December 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]

Variants

[edit]
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

[edit]

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

[edit]

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))

[edit]
Left view, Fleet Air Arm Museum, Australia

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

General characteristics

Components

Performance

See also

[edit]

Comparable engines

Related lists

References

[edit]

Notes

[edit]
  1. ^ "ENGLISH ELECTRIC-ROLLS ROYCE Napier Aero Engines Ltd." Times [London, England] 1 June 1961: 24. The Times Digital Archive. Web. 30 Aug. 2016.
  • ^ Napier Aero Engines Ltd (closure) Hansard, 8 March 1963 vol 673 cc921-32
  • ^ a b c d Wilkinson, Paul H. (1957). Aircraft engines of the World 1957 (15th ed.). London: Sir Isaac Pitman & Sons Ltd. pp. 154–155.
  • ^ a b c d e f g h i j k l Taylor, John W.R. FRHistS. ARAeS (1962). Jane's All the World's Aircraft 1962-63. London: Sampson, Low, Marston & Co Ltd.
  • ^ Flightglobal online archive
  • Bibliography

    [edit]
    • 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.
  • [edit]
    Retrieved from "https://en.wikipedia.org/w/index.php?title=Napier_Gazelle&oldid=1176486456"

    Categories: 
    Napier aircraft engines
    1950s turboshaft engines
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    This page was last edited on 22 September 2023, at 01:02 (UTC).

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