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US 4,726,546 AGranted
Semi-venturi airfoil aircraft
OwnerLawrence J. De Angelisinventor
Life of this patent
Estimating the term…
Abstract
A VTOL/STOL aircraft of simple design and construction. The aircraft has a central semi-venturi shaped airfoil surface defining a channel integral to the fuselage, a canard system and a horizontal stabilizer system at the respective ends of the channel, and a propulsion unit for accelerating airflow through the channel to achieve stable and easily maneuverable flight.
Claims14
An aircraft comprising:
- a central semi-venturi shaped airfoil surface adapted to function as the primary lift generating surface for said aircraft;
- said airfoil surface defining a channel having a front end and a rear end and having a varying cross-sectional opening along its length;
- the cross-sectional opening at the point of smallest opening in the interior of said channel being of a generally semi-circular shape;
- the lower surface of said channel providing a substantially flat lifting surface;
- a canard system connected to each side of the upper periphery of said channel at the front end thereof and having no obstructions to the airflow forward of or above said canard system;
- a horizontal stabilizer system connected to each side of the upper periphery of said channel at the rear end thereof;
- and
- propulsion means located forward of said canard system and connected to said airfoil surface for accelerating the flow of air through said channel from the front end to the rear end thereof and across said canard system and said horizontal stabilizer system in a controlled manner for controlled flight of said aircraft.
5 more elements
Dependencies are inferred from the claim text.