Napier Gazelle

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. But the venture closed two years later.

Variants

NGa.1:Emergency rating at 20,400 rpm, 1 hour rating at 19,800 rpm, Max continuous rating at 19,000 rpm

NGa.2:Emergency rating at 20,400 rpm

NGa.2(R):

NGa.2 series 2:

NGa.3:Emergency rating at 20,400 rpm

NGa.4:Emergency rating at 20,400 rpm

NGa.13(R):

NGa.13 series 2:

NGa.18:

NGa.22:

Mk.101:

Mk.161:

Mk.162: (NGa.13 series 2)

Mk.165:

Gazelle 501:

Gazelle 503:

Gazelle 512:

Gazelle 514:

Gazelle E.219:

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))

See also

References

Notes

Bibliography

• Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989.

External links

• Flight, July 1967, Napier Gazelle