Napier Gazelle


The Napier Gazelle was a turboshaft engine 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:
;NGa.2 series 2:
;NGa.3:Emergency rating at 20,400 rpm
;NGa.4:Emergency rating at 20,400 rpm
;NGa.13:
;NGa.13 series 2:
;NGa.18:
;NGa.22:
;Mk.101:
;Mk.161:
;Mk.162:
;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 and the Bristol 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.

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