The Westland Wisp was an unmanned coaxial helicopter developed by Westland Helicopters. It was powered by a pair of 5hp [2]Korba twin cylinder two-stroke engine.[1]

References

  1. ^ a b "Westland "Wisp" helicopter_development_history,photos,technical data".
  2. ^ "The Helicopter Museum | Helicopter Collection". helimuseum.com.
Allikas: https://en.wikipedia.org/wiki/Westland_Wisp
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