Class 244/7B - Tail sitters

Subclass of Class 244 - Aeronautics and astronautics
No. of patents: 34
Last issue date: 08/16/2011

Number	Title	Issue Date
7997526	Moveable wings on a flying/hovering vehicle The present invention includes an embodiment defined as a flying vehicle having a pair of wings and a transition assembly partially housed within each of the pair of wings. The transition assembly has ends rotatable with respect to each other and separately secured ...	08/16/2011
7506837	Inbound transition control for a tail-sitting vertical take off and landing aircraft A system for controlling inbound transition of an aircraft includes a fuselage and first and second freewings pivotably mounted on opposing sides thereof. The system includes an airspeed sensor that outputs an airspeed indication signal. The system includes a contro...	03/24/2009
7472862	Rotating blade aircraft control system In a preferred embodiment, an apparatus, including: an aircraft having rotatable blades; and the rotatable blades are movable between horizontal and vertical positions. ...	01/06/2009
7441724	System and method for controlling a roll rate of a torsionally-disconnected freewing aircraft An aircraft includes a fuselage, and first and second freewings. Each of the first and second freewings is separately mounted to the fuselage and independently freely pivotable about respective pivot axes. The aircraft includes an angular rate sensor configured to m...	10/28/2008
7352471	Embedded interferometric fiber optic gyroscope systems and methods In accordance with at least one embodiment of the present invention, a system includes a gyroscope and a flight vehicle operatively connected to the gyroscope. The gyroscope includes a length of fiber optic cable arranged in loop and configured to surround an interi...	04/01/2008
7352073	Ocean wave energy converter having an improved generator and ballast control The ocean wave energy converter uniquely includes a generator with a rotating inner rotor surrounded by a counter-rotating outer rotor for generating electricity. A reciprocating drive rod drives the inner rotor on the downstroke of the drive rod and the outer rotor...	04/01/2008
7299702	Apparatus for monitoring an aircraft flap and application of a dynamometric rod A dynamometric rod intended to form a pivot for fixing an aircraft wing flap, includes a cylindrical body (10) with a hexagonal head (12) and a threaded end-piece (14). The dimensions and other characteristics of the body (10), head (1...	11/27/2007
7278606	Helicopter having a fusilage section and a tail section coupled thereto A helicopter having: a flow control device provided at one of a lower portion of a side surface of a fuselage and a portion on a lower surface of the fuselage near the side surface and extending downward. ...	10/09/2007
7274978	Electrical power supply system for unmanned aircraft A miniature, unmanned aircraft for acquiring digitized data, transmitting digitized data, or both, having an electrical supply system capable of sustained operation. The aircraft has a fuselage, a wing, a reciprocating piston internal combustion engine, a propeller,...	09/25/2007
7262394	Mortar shell ring tail and associated method There is provided a ring tail for a ballistic projectile and an associated method that facilitate maneuverability of the ballistic projectile. The ring tail comprises a ring member having a generally cylindrical wall and at least one rod joined to an aft section of ...	08/28/2007
7226017	Aerodynamically stable, high-lift, vertical takeoff aircraft In a preferred embodiment, a vertical takeoff aircraft body having an inverted hemispherical upper portion, a generally cylindrical lower portion with a diameter of its upper end slightly greater than a diameter of its lower end but less than a diameter of the lower...	06/05/2007
7195200	Unmanned helicopter, takeoff method of unmanned helicopter, and landing method of unmanned helicopter An unmanned helicopter includes an altitude control device for giving a command of a collective pitch blade angle based on an altitude change rate command, etc., and performing altitude control of an airframe and takeoff device, upon reception of a takeoff start com...	03/27/2007
7185848	Mass transfer system for stabilizing an airship and other vehicles subject to pitch and roll moments The invention relates to a mechanism to control the pitch and/or roll and/or center of gravity of a vehicle. The first embodiment is a track-based mass transfer system in which pathways are positioned along or radially terminate at a central horizontal plane of the ...	03/06/2007
7118066	Tall V/STOL aircraft A vertical or short takeoff and landing (V/STOL) airplane is described having a vertical form factor. Making the airplane tall has many advantages when operating in hover mode close to the ground. Several variations of the design are described. The preferred embodim...	10/10/2006
7044422	Gyrostabilized self propelled aircraft An unmanned air vehicle comprises a fuselage that defines aerodynamic flight surfaces, an engine mounted to the fuselage having an engine shaft arranged to rotate about a longitudinal axis with respect to the fuselage, and a propeller mounted to the engine shaft so ...	05/16/2006
6854686	VTOL aircraft VTOL aircraft comprising a first and a second ducted rotor positioned at the ends of a vertical fuselage and whose propellers are driven to rotate in mutually opposite directions. Control flaps for orientation and transverse flight are operatively associated at leas...	02/15/2005
6634593	Remote controlled aircraft, in particular for surveillance or inspection The invention concerns a remote-controlled flying machine, in particular for surveillance and inspection, capable of hovering and comprising a spherical open-worked resistant shroud integral with a cylindrical fairing wherein rotates a propeller powered b...	10/21/2003
6561455	Vertical take-off and landing, aerodynamically self-sustained horizontal flight hybrid aircraft An vertical take-off and landing (VTOL) and horizontal flight (HF) aircraft has a fuselage with wings providing lift during horizontal flight, a rotor on the nose of the fuselage that is stowable during horizontal flight, a first pair of ducted fan propel...	05/13/2003
6550715	Miniature vertical takeoff and landing aircraft A vertical takeoff and landing aircraft is disclosed that includes a support structure having a motor mounted vertically thereto, with the motor having a propeller for rotation in a horizontal plane. A power supply for the motor is mounted to the support ...	04/22/2003
6502787	Convertible vertical take-off and landing miniature aerial vehicle A vertical take-off and landing miniature aerial vehicle includes an upper fuselage segment and a lower fuselage segment that extend in opposite directions from a rotor guard assembly. A rotor rotates within the rotor guard assembly between the fuselage s...	01/07/2003
6398157	Aircraft An aircraft capable of vertical take off and normal cruise flight has a fuselage and a pair of wings, the wings being movable relative to the fuselage from a rearwardly swept position to which the wings are moved for vertical take off, to a spread positio...	06/04/2002
6086015	Aerial transport method and apparatus Apparatus for transporting a load between source and destination locations, comprising an aircraft having a body, power plant carried by the body to drive the aircraft both generally vertically and also generally horizontally, the aircraft also having a w...	07/11/2000
5769359	Active feedback loop to control body pitch in STOL/VTOL free wing aircraft An aircraft control system for controlling an aircraft, particularly a free wing aircraft in low speed or hover regimes. An air speed sensor measures air speed of the aircraft and outputs an air speed signal to a control processor which processes the air ...	06/23/1998
5765783	Vertically launchable and recoverable winged aircraft A vertically launchable and recoverable winged aircraft includes an airframe, a least one proprotor connected to the airframe through a rotatable drive shaft, and collective and cyclic pitch control systems. The airframe includes a wing having a leading e...	06/16/1998
5516060	Vertical take off and landing and horizontal flight aircraft The present invention pertains to an aircraft that is capable of converting between vertical flight or helicopter mode flight, and horizontal flight or airplane mode flight where a two-bladed rotor is employed as both helicopter rotor blades in vertical f...	05/14/1996
5507453	Gyro stabilized vectored thrust vertical takeoff or landing aircraft The thrust director assembly may include a thrust director cone with its apex oriented into the fan airstream and a larger thrust vectoring ring concentric with the director cone. The thrust director assembly axis is angularly displaceable relative to the...	04/16/1996
5340057	Thrust vectoring free wing aircraft The VTOL aircraft includes a free wing having wings on opposite sides of the fuselage connected to one another for joint free rotation and for differential pitch settings under pilot, computer or remote control. On vertical launch, pitch, yaw and roll con...	08/23/1994
5295643	Unmanned vertical take-off and landing, horizontal cruise, air vehicle An unmanned air vehicle capable of vertical take-off and landing, hovering and high-speed horizontal cruise flight. A forward centerbody houses an engine and carries a single rotor assembly having a plurality of propellers lying in a plane substantially p...	03/22/1994
5289994	Equipment carrying remote controlled aircraft It works like a helicopter in vertical flight or like an airplane in horizontal flight, being able to land accurately on a small area. It is equipped with a rotor, a couple of wings fitted with ailerons and other control surfaces actuated differentially, ...	03/01/1994
5114096	Tail sitter airplane A tail sitter airplane will take off and land on its tail section, with its fuselage and nose pointed up. The airplane has a single driven propeller mounted to the nose section. Wings extend outward from the fuselage. Four airfoils locate in the tail sect...	05/19/1992
5062587	Landing gear for a tail sitting airplane A tail sitter aircraft of a type that takes off and lands on its tail section with the fuselage pointed vertically upward has landing gears located on its rearward end. Each of the landing gears is mounted on a support axis which is offset from the fusela...	11/05/1991
5056737	VTOL aircraft with movable undercarriage A vertical take-off and landing aircraft is configured so as to provide, when landing tail-first with its fuselage (1) in a generally vertical attitude, a touchdown area (21) at the tail of the aircraft at a position offset from a line extending along the...	10/15/1991
4085912	Convertible airship A gondola, or cabin structure, is attached to a lighter-than-air gas-containing structure by mounting apparatus enabling rotation of the longitudinal axis of the gas-containing structure through about 90° with respect to the orientation of the gondola. P...	04/25/1978
4037807	Flight vehicle A flight vehicle comprises a vehicle body with a duct having a longitudinal axis extending through the body, and a fan for inducing a flow of ambient air through the duct from an inlet end to an outlet end to provide a thrust acting along the axis of the ...	07/26/1977

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Class 244/7B - Tail sitters