Bristol Siddeley Nimbus

Nimbus
Nimbus Mark 103
TypeTurboshaft aircraft engine
ManufacturerBristol Siddeley
First runJuly 1958
Major applicationsWestland Scout
Westland Wasp
Developed fromTurbomeca Turmo

The Bristol Siddeley Nimbus, later known as the Rolls-Royce Nimbus, was a British turboshaft engine developed under license by Blackburn Aircraft Ltd. from the Turbomeca Turmo in the late 1950s. It was used on the Westland Scout and Westland Wasp helicopters.