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| Number | Title | Issue Date |
| 6161799 | Rotor blade lock for rotary/wing aircraft The present invention comprises an apparatus for locking both rotor blades of a rotor/wing aircraft at a common point to form a rigid wing having a uniform bilateral aerodynamic response. In one embodiment of the present invention the rotor blades of a ro... | 12/19/2000 |
| 6064923 | Aircraft with reduced wing structure loading An aircraft having a reduced-load wing structure is provided with a controllable canard stabilizer (5G, 5D) at the front end of the aircraft and a controller that controls the canard stabilizer. The controller generates a turn command corresponding to an ... | 05/16/2000 |
| 5915649 | Roadable helicopter A roadable helicopter according to various aspects of the present invention comprises a vehicle that drives like a conventional car in its road configuration, and converts to fly like a helicopter in its flight configuration. The operator of the helicopte... | 06/29/1999 |
| 5842665 | Launch vehicle with engine mounted on a rotor A launch vehicle which employs a rotor similar to a helicopter. The vehicle has a four bladed rotor which is mounted on the vehicle body. The body of the vehicle includes propellant tanks and a payload compartment contained within an integral aeroshell. R... | 12/01/1998 |
| 5799900 | Landing and take-off assembly for vertical take-off and landing and horizontal flight aircraft An aircraft adapted for flight in helicopter mode with its longitudinal axis oriented generally vertically and in airplane mode with its longitudinal axis oriented generally horizontally is provided with the capability of launching and landing with the ta... | 09/01/1998 |
| 5788181 | Thermostatic metal actuator for nozzle actuation A nozzle for use on opposing ends of the rotor of a jet powered tri-mode aircraft is disclosed. The nozzle includes two thermally-controlled doors, which are moveable between an open configuration where hot jet engine exhaust is vented therethrough to pro... | 08/04/1998 |
| 5595358 | Multipurpose airborne vehicle The present invention relates in general to aeronautical engineering and concerns specifically transport vehicles for transportation of liquid and loose cargoes. The invention provides an airborne vehicle capable of carrying a multiton cargo from a limite... | 01/21/1997 |
| 5503351 | Circular wing aircraft A circular wing aircraft in the form of a helicopter comprising a fuselage and a circular wing assembly. A structure is for mounting the circular wing assembly above the fuselage in a stationary manner. An air impeller unit is rotatively carried within th... | 04/02/1996 |
| 5454530 | Canard rotor/wing A dual-mode high speed rotorcraft is disclosed which combines the efficiency of a helicopter with the high-speed capability of a fixed wing aircraft. The rotorcraft includes a rotor for propulsion during low-speed flight and hover, which is stopped and lo... | 10/03/1995 |
| 5405104 | Stopped rotor aircraft utilizing a flipped airfoil X-wing This invention is directed to stopped rotor Flipped Airfoil X-wing (FAX-WING™) aircraft which comprises: (a) A rotary wing flight mode which operates similar to a helicopter, wherein all main rotor airfoils rotate with leading edges into the ... | 04/11/1995 |
| 5046684 | Airplane with braced wings and pivoting propulsion devices Conventional cantilever wings of a tiltrotor aircraft are replaced by a joined-wing configuration that eliminates some major speed-limiting constraints of prior tiltrotor configurations--thereby allowing operation into the intermediate speed range of roug... | 09/10/1991 |
| 4793572 | Vertical launch and hovering space shuttle The invention concerns the forming of vertical thrust by rotor blades and their subsequent stopping to act as wings, by changing the angle of of attack of the individual stationary blades during foward flight. The horizontal movement of each blade is inde... | 12/27/1988 |
| 4770371 | Fluid motor driven multi propeller aircraft An aircraft has a plurality of pairs of disc-type wings behind each other kept by holding structures on the body of the craft. Each pair has one disc-type wing on the right and one disc type wing on the left of the body, symmetrically arranged relative to... | 09/13/1988 |
| 4623300 | Helicopter rotor blade securement device Folded helicopter blades are secured against undesirable motion by a device that attaches to a receptacle in the underside of each blade. The device comprises a pin for engaging the receptacle, a spherical bearing disposed about the pin, an annular housin... | 11/18/1986 |
| 4335537 | Toy aircraft A toy aircraft having a rotatable wing assembly having at least two blades of aerofoil cross-section extending radially outwardly from the axis of rotation of the assembly, each blade having a zero pitch angle so that in operation the blades have a negati... | 06/22/1982 |
| 4195800 | Autogyros Autogyro rotor comprises blades radiating outwardly from central disc structure. Disc structure extends over substantial part of the area of the rotor to increase lifting forces provided by rotor and may be shaped to produce aerodynamic lift on forward mo... | 04/01/1980 |
| 3986686 | Aircraft with retractable rotor wing An aircraft having a rotor wing which in one position is locked against the irframe for forward flight, and in another position is extended clear of the airframe. In the extended position the wing is rotated and the tip portions are controllable in the man... | 10/19/1976 |
