| Rotodyne | |
|---|---|
 Rotodyne XE521 in flight | |
| General information | |
| Type | Compound gyroplane |
| National origin | United Kingdom |
| Manufacturer | Fairey Aviation |
| Status | Cancelled 1962 |
| Number built | 1 |
| History | |
| First flight | 6 November 1957 |
| Developed from | Fairey Jet Gyrodyne |
The Fairey Rotodyne was a 1950s British compound gyroplane designed and built by Fairey Aviation and intended for commercial and military uses.[1] A development of the earlier Fairey Jet Gyrodyne, which had established a world helicopter speed record, the Rotodyne featured a tip-jet-powered rotor that burned a mixture of fuel and compressed air bled from two wing-mounted Napier Eland turboprops. The rotor was driven for vertical takeoffs, landings and hovering, as well as low-speed translational flight, but autorotated during cruise flight with all engine power applied to two propellers.
One prototype was built. Although the Rotodyne was promising in concept and successful in trials, the programme was eventually cancelled. The termination has been attributed to the type failing to attract any commercial orders; this was in part due to concerns over the high levels of rotor tip jet noise generated in flight. Politics had also played a role in the lack of orders (the project was government funded) which ultimately doomed the project.