The Westland Wisp was an unmanned
coaxial
In geometry, coaxial means that several three-dimensional linear or planar forms share a common axis. The two-dimensional analog is ''concentric''.
Common examples:
A coaxial cable is a three-dimensional linear structure. It has a wire conduc ...
helicopter developed by
Westland Helicopters
Westland Helicopters was a British aircraft manufacturer. Originally Westland Aircraft, the company focused on helicopters after the Second World War. It was amalgamated with several other British firms in 1960 and 1961.
In 2000, it merged w ...
it was powered by a pair of 5hp
twin cylinder
two-stroke engine
A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being completed in one revolution of t ...
.
References
External links
Military Drone , Westland Wisp , Farnborough Airshow , Today , 1978F 1287 Westland Wisp at Larkhill
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Unmanned helicopters
Unmanned aerial vehicles of the United Kingdom
aircraft first flown in 1976
Coaxial rotor helicopters
1970s British helicopters
Westland Helicopters