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| Number | Title | Issue Date |
| 7370828 | Rotary wing aircraft A rotary wing aircraft is provided with longitudinally oriented counter-rotating rotors with circumferentially spaced variable pitch elongated rotor blades connected at their opposite ends to rotatable support rings mounted on the aircraft fuselage. Rotor downwash m... | 05/13/2008 |
| 7284420 | Air data system and method for rotary aircraft An air data system and method for a rotary aircraft is described. The air data system includes a plurality of flush ports connected via tubing to a plurality of air flow sensors that can measure air flow speeds as low as approximately 0.02 knots. The flush ports are... | 10/23/2007 |
| 7255305 | Flying device utilizing natural principles An efficient flying device having flapping wings, an ornithopter, which uses many of the principles seen in bird flight, is presented herein. The wings are highly flexible, translationally stable and oscillate as a natural pendulum. Described as a springboard, the w... | 08/14/2007 |
| 7219855 | Rising and moving apparatus and manufacturing method thereof A fluid-structure interactive analysis is performed while n types of wing structure models are caused to flap in accordance with a prescribed model of flapping manner. Based on an analysis, data 1, data 2, . . . data n of physical values related to flu... | 05/22/2007 |
| 7219854 | Cycloidal hybrid advanced surface effects vehicle A “wing in ground effect” aerial vehicle includes a wing mounted on a fuselage, and two cycloidal propulsion units for providing lift, thrust and longitudinal control. Additional lift is provided by a lighter-than-air gas such as helium contained in the fuselage... | 05/22/2007 |
| 7204455 | Motion assisting apparatus A drive assembly for use with a mechanical flying or walking device comprises an articulated member (7) having first and second portions (7a, 7b) arranged such that the portions move relative to each other, and a drive mechanism ( | 04/17/2007 |
| 6932296 | Cycloidal VTOL UAV A system and method for moving an aerial vehicle along a flight path includes rotatable hubs mounted on opposite sides of the vehicle. Elongated airfoils are mounted on the hubs parallel to a common hub axis for rotation about the hub axis on a blade path. Each airf... | 08/23/2005 |
| 6227483 | Wing movement for ornithopters and apparatus of the like The wing movement has a gearbox, a reference gear extending through the gearbox and being movably mounted to the gearbox, an input shaft extending through the reference gear and into the gearbox and first and second output shafts movably extending from th... | 05/08/2001 |
| 5265827 | Paddle wheel rotorcraft An aircraft having vertical takeoff and landing capability having at least first and second laterally extending paddle wheels rotatable on a central axis generally perpendicular to the longitudinal axis of the aircraft and between its nose and tail. Each ... | 11/30/1993 |
| 4527757 | Lift generating mechanism for an aircraft A lift generating mechanism includes a plurality of airfoils each having first and second end surfaces, first and second side surfaces, and a centerline extending between the first and second side surfaces. The airfoil section lying between the first end ... | 07/09/1985 |
| 4210299 | Propulsive lifting rotors A propulsive lifting rotor for an aircraft comprises two wings pivotally mounted about axes parallel to their leading edges. The wings (rotary airfoils) are located at respective sides of a plane at right angles to the rotor axis.... | 07/01/1980 |
| 4166595 | Variable lift advancing wing aircraft An aircraft comprised of a pair of spaced apart interconnected air-frame members and a cargo compartment supported therewithin is provided with a plurality of expansible airfoils mounted for peripheral movement around the air-frame members as driven by a ... | 09/04/1979 |
| 4113205 | Aerodynamic lifting mechanisms An aerodynamic lift mechanism comprises a plurality of aerofoils mounted on two continuous toothed belts which are driven by toothed pulleys. A lever connects each aerofoil to a continuous member which substantially follows the contour of the belts but wh... | 09/12/1978 |
| 3938759 | Special aircraft using a novel integrated lift, propulsion and steering system An aircraft having a body on which is mounted an integrated lift, propulsion and steeing system inclusive of cycloidal propellers having horizontal axes of rotation capable of developing net thrust forces at any given angle in a vertical plane. Each prope... | 02/17/1976 |
