Aircraft with annular wing

Aircraft with annular wingKeywords:Rotor, Patents

In GB Patent 2351271 Charles John Cochrane describes a six bladed rotor, the blades of which may have tip-plates and winglets. It causes air to flow from an inlet to an outlet via a passage containing an annular wing, which generates lift as the air flows over it. Lateral control surfaces and anti-torque vanes may be provided and the wing may have control surfaces. The aircraft is provided with a housing and a body having a curved upper surface for creating lift. Instead of the bladed rotor a jet engine may be used to produce the airflow.