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Class 244/47 - Dihedral


Subclass of Class 244 - Aeronautics and astronautics
Definition: Sustaining airfoils so arranged that the dihedral angle
No. of patents: 19
Last issue date: 12/25/2007


NumberTitleIssue Date
7311287Methods for incorporating area ruled surfaces in a supersonic aircraft
A vertical stabilizer is configured to minimize the rate of change of cross-sectional area distribution of the vehicle or device to which the vertical stabilizer is mounted. One or more “waisted” areas can be included at the tip and/or the root of the vertical s...
12/25/2007
7216830Wing gull integration nacelle clearance, compact landing gear stowage, and sonic boom reduction
A supersonic cruise configuration aircraft comprises a fuselage extending on a longitudinal axis from a forward nose to an aft tail, and a wing coupled at an inboard section to the fuselage and extending to an outboard tip, and having a leading edge and a trailing e...
05/15/2007
7130725Method for correcting control surface angle measurements in single viewpoint photogrammetry
A method of determining a corrected control surface angle for use in single viewpoint photogrammetry to correct control surface angle measurements affected by wing bending. First and second visual targets are spaced apart from one another on a control surface of an ...
10/31/2006
6951322Personal aircraft device
A personal aircraft device (“PAD”) and a powered personal aircraft device (“PPAD”) configured to be ridden and/or releasably connected to a person or user. The personal aircraft device can be configured to provide a large array of maneuvers during sky diving...
10/04/2005
6931247Aircraft control method
This disclosure provides a solar rechargeable aircraft that is inexpensive to produce, is steerable, and can remain airborne almost indefinitely. The preferred aircraft is a span-loaded flying wing, having no fuselage or rudder. Traveling at relatively slow speeds, ...
08/16/2005
6729577Tail-braced wing aircraft and configurations for achieving long supersonic range and low sonic boom
The present invention provides improvements for supersonic aircraft, joined-wing aircraft and sonic boom reduction, separately and in combination, for long range supersonic cruise aircraft with reduced sonic boom loudness. Several designs for integrating and support...
05/04/2004
6547181Ground effect wing having a variable sweep winglet
A variable sweep winglet with a negative dihedral angle is provided for a ground effect vehicle. The winglet is positionable at a sweep angle to control the winglet tip clearance from ground. Variable winglet tip clearance reduces the risk of damage or in...
04/15/2003
5918832Wing design using a high-lift center section, augmented by all-moving wing tips and tails
An air vehicle defining a plane of symmetry includes a pair of outboard panels which are rotatably mounted on the lifting body of the vehicle and respectively extend in opposite directions from the plane of symmetry. A control system collectively rotates ...
07/06/1999
5488372Electronic avoidance configurations
A method of construction to make military craft and weapons totally invisible to radar and active infra-red by the configuration of exterior surfaces, each surface having that specific surface figure which causes the reflected electromagnetic emission to ...
01/30/1996
5224665Split span vee tail control arrangement for air vehicle
An active flight control arrangement for an air vehicle that includes a split span vee fin tail control arrangement whereby inner and outer spans of each fin are independently operable to provide yaw, roll, and pitch control for an air vehicle in flight. ...
07/06/1993
5181674Wind driven craft
A wind driven craft comprising a body and a pair of wings extending therefrom. The wings are pivotally connected to the body of the craft. The wings provide lift and thrust to the craft such that it is able to move under influence of the wind....
01/26/1993
5139215Guided missiles
A fuselage, particularly of a guided missile, having a rotatable nose body carrying a pair of similar strakes symmetricaly disposed about the body and for anchoring incidence generated vortices thereon....
08/18/1992
5104061Dual eccentric bearing for adjustment of pivoting aircraft wings
A dual eccentric bearing system for precise adjustment of wing incidence and dihedral. The bearing system is utilized in the attachment of wings that vary the sweep by rotation about a pivot fixedly located on an aircraft fuselage through an interconnecti...
04/14/1992
5078338Means for maintaining a desired relationship between roll and yaw stability in a swept-wing aircraft by varying dihedral as a function of lift coefficient
An assembly for controlling the lateral stability of a swept-wing aircraft by varying the geometric dihedral of the wing as a function of the wing's lift coefficient, such assembly including a mechanism for producing a signal or other type response repres...
01/07/1992
4856943Airfoil incidence angle adjustment method
A method of providing interchangeability of aircraft wings, particularly providing a method of adjusting the angles of incidence and dihedral to compensate for differences in the twist angle between airfoils. The method comprises determining the angle of ...
08/15/1989
4674709Airframe design
This invention relates to aircraft designs with substantial trim drag reduction while maintaining commercially feasible low parasitic and induced drag. The stable or control configured aircraft utilizes controllable winglets to generate pitching, yawing, ...
06/23/1987
4667898Aircraft with single surface membranous airfoils
A remotely piloted vehicle is provided with single surface membranous airls controllable in flight. The airfoils are selectively deployed from a stowed position on either side within the fuselage by spars attached to the leading edges. Pivotal members at...
05/26/1987
4357777Dihedral aerodynamic structure
The specification describes an aerodynamic structure having lift for use on an aerodyne. The structure comprises first and second essentially identical planar sections hingedly connected at their roots to one another at dihedral angles. The sections are m...
11/09/1982
4354646Variable dihedral angle tail unit for supersonic aircraft
An aircraft having supersonic and subsonic flight capabilities which utilizes a variable dihedral angle tail unit to vary the aircraft geometry to improve aerodynamic efficiency, especially when changing from subsonic to supersonic speeds and vice versa, ...
10/19/1982
 
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