A good view of both the Rotodyne’s beaver-tail, with clamshell doors, and the tip-jet installations. AEROPLANE

The Rotodyne’s tip-drive system owed its existence to Austrian helicopter pioneer Friedrich von Doblhoff, who directed a research programme instituted in 1942. On his WNF 342 machine, a conventional piston engine was used to drive a compressor to supply air mixed with fuel up through the rotor hub and out through three hollow rotor blades, to be burned in tip-mounted combustion chambers. The result was that enough thrust was generated to turn the blades and provide lift.

Become a Premium Member to Read More

This is a premium article and requires an active Key.Aero subscription to view.

I’m an existing member, sign me in!

I don’t have a subscription…

Enjoy the following subscriber only benefits:

  • Unlimited access to all KeyAero content
  • Exclusive in-depth articles and analysis, videos, quizzes added daily
  • A fully searchable archive – boasting hundreds of thousands of pieces of quality aviation content
  • Access to read all our leading aviation magazines online - meaning you can enjoy the likes of FlyPast, Aeroplane Monthly, AirForces Monthly, Combat Aircraft, Aviation News, Airports of the World, PC Pilot and Airliner World - as soon as they leave the editor’s desk.
  • Access on any device- anywhere, anytime
  • Choose from our offers below