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4311289 |
Modifications to jet aircraft having aft fuselage-mounted nacelles overlapping the wing assemblies
Modifications to a jet aircraft of the type having aft fuselage-mounted engine nacelles overlapping trailing edge portions of the aircraft's wings, wherein a channel area defined by the fuselage,...
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4296899 |
Apparatus and method for manufacturing laminar flow control aircraft structure
A method for manufacturing a laminar flow control aircraft structure, typically a wing or other aerodynamic surface, having an outer skin in which a plurality of spanwise oriented and chordwise...
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4284302 |
Driven craft having surface means for increasing propulsion efficiencies
The exterior surfaces of an automobile is formed with a series of immediately adjacent or closely spaced wave-shaped flutes which extend longitudinally at an angle to the direction of travel and...
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4272043 |
Fluid stream deflecting members for aircraft bodies or the like
Devices to reduce the drag experienced by aircraft and other travelling bodies, comprising sail-like members mounted on the body surface. These members project into the local stream that forms...
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4267992 |
Tire/wheel concept
A tire and wheel assembly is disclosed in which a low profile pneumatic tire having sidewalls which deflect inwardly under load and a wheel having a rim featuring a narrow central channel and...
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4261535 |
Streamline afterbody for an ejection seat
The ejection seat on a high performance aircraft is provided with a plurality of inflatable air bags on the back of the seat. The air bags are generally elliptical in cross-section and arranged one...
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4258889 |
Method and apparatus for laminar flow control
A method of installing a compressible insert in an exterior surface of a body is disclosed. There is also disclosed a laminar flow control arrangement that may be produced by such method.
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4256276 |
Adjustable airplane appendages for wave drag reduction
Movable appendages or stores containers that are positioned controlled in regard to an airplane so as to approximate the cross-sectional area distribution of a minimum drag body of revolution...
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4240290 |
Skin friction measuring device for aircraft
A skin friction measuring device for measuring the resistance of an aerodynamic surface to an airstream, adapted to be mounted on an aircraft, within an opening defined therein, and characterized...
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4238094 |
Aircraft wing fence
An improved fluid fence which reduces drag on solid objects moving through a fluid environment and an airfoil or aircraft wing structure having an improved open fence on its surface improving the...
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4225102 |
Aerodynamic side-force alleviator means
Apparatus for alleviating high angle-of-attack side force on slender pointed cylindrical forebodies such as fighter aircraft, missiles and the like and employing a symmetrical pair of helical...
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4214721 |
Aircraft collapsible fuel tank
A collapsible fuel tank for aircraft, the tank having rigid top and bottom elements and foldable rigid side walls containing therein a non-vented fluid-impervious elastomeric bladder. When fluid is...
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4200252 |
Helicopter antitorque system using circulation control
An antitorque system for use in a helicopter produces antitorque moments with efficiency comparable to that of the tail rotor it is designed to replace. The antitorque forces are generated mainly...
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4180290 |
Propelled apparatus having surface means for developing increased propulsion efficiencies
An automobile includes a main front air screen generator having a curved wall member extending rearwardly and upwardly to a crest. A central deflector plate develops an air screen in front of the...
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4176813 |
Shark nose for aircraft
An aircraft nose and forebody shaped to produce relatively ideal vortex patterns which will provide improved static directional stability of the aircraft in the stall angle of attack region and...
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4153223 |
Limited-range projectile having a flat trajectory
There is disclosed a limited range, high-speed projectile with a flat trajectory. The range is limited by controlling the air resistance of the projectile, so that the air resistance increases...
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4131252 |
Apparatus for compensating for airflow blockage in aircraft slotted flap assemblies
Apparatus to compensate for airflow blockage and attendant airflow separation, loss of lift, and flap buffeting caused by the support members connecting a flap to the stationary portion of the wing...
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4117995 |
Aircraft wing lift augmentation device
A wing duct near and parallel to the leading edge of an aircraft wing receives air from the jet engines of the craft. The wing duct is spiral-like in cross section with an exit slit for directing...
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4114836 |
Airplane configuration designed for the simultaneous reduction of drag and sonic boom
A plurality of passageways, each having its longitudinal axis substantially parallel to the flight path of an aircraft, extend through the wings, fuselage, horizontal elevators, and rudder for the...
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4109885 |
Vertical take-off and landing aircraft
A vertical take-off and landing aircraft features an improved tail-lifting rotor and rotor directional controls. A new type of suction pressure jet-mechanical-flap rotor blade with a higher...
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4095761 |
Aerial refueling spoiler
An aerodynamic spoiler mounted on the upper forward surface of the fuselage of an aircraft which is equipped to be refueled by another aircraft while in flight. The spoiler counteracts aerodynamic...
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4067518 |
Drag reducer for lift surface of aircraft
One or more aerodynamic bodies of preselected shape and placement are employed on the lower surface of an aircraft wing or other aerodynamic lifting surface for the purpose of reducing its drag....
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4066226 |
Airfoil, reduced profile, "Y" flow, hybrid
A hybrid airfoil of extremely short span and thick chord section having a large portion of the trailing edge truncated with openings in the ends or side for air to enter and openings in the rear...
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4046336 |
Vortex diffusion and dissipation
Vortex diffusion means for an aircraft having lift structure rooted therein that extends outboard to a structure tip from which a discrete tip vortex develops when said tip is propelled through the...
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4034939 |
Assembly for sealing the mounting opening for a flying horizontal stabilizer on a vertical stabilizer
A seal assembly for covering the structural opening in the side of a vertical stabilizer, through which extends a structural member for pivotally mounting a flying horizontal stabilizer to...
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4030779 |
Inflatable streamlining structure for vehicles
The invention is an inflatable drag reduction structure for attachment to a moving vehicle such as a trailer or a truck body.
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4027836 |
Drag reducing fairing for landing gear
A drag-reducing construction adapted for use with a non-retractable landing gear for aircraft which includes an oleo strut and two torque links. The improvement involves placing an aerodynamically...
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4007896 |
Upwardly extendible wing flap system
A fixed wing is provided and includes an upwardly opening recess formed therein and extending along the trailing marginal edge portions of the wing. A flap is provided and mounted from the wing for...
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3999797 |
Airvane device for bluff vehicles and the like
An airvane for use with bluff vehicles and the like to reduce air drag thereon is disclosed wherein the airvane includes a curved portion and a generally planar portion. Such airvanes are mounted...
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3984070 |
Wingtip vortex dissipator for aircraft
A means for attenuating the vortex created at aircraft wingtips which consists of a retractable planar surface transverse to the airstream and attached downstream of the wingtip which creates a...
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3974986 |
Aircraft wing vortex deflector
An aircraft wing vortex deflector constituting means for intercepting at least a part of the spiral flow of air around the tips of the wings during flight and directing the intercepted air...
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3972494 |
Vehicle air screen apparatus
A land, water or air vehicle has a jet air stream unit mounted in front with a plurality of distributed jets generated immediately preceding the front wall portion of the vehicle to reduce the...
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3968946 |
Extendable aerodynamic fairing
An extendable fairing for use between two aerodynamic surfaces (e.g., the engine nacelle and wing leading edge flap) of an aircraft is disclosed. The illustrated embodiment of the invention...
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3960345 |
Means to reduce and/or eliminate vortices, caused by wing body combinations
A strake, or strakes, or faired simulation of same, mounted on a typical engine nacelle or similar wing mounted body to reduce or prevent the formation of vortices usually occurring with...
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3934846 |
Device to reduce flow induced pressure oscillations in open cavities
A combined air flow deflector and diffuser assembly including a main flow deflector vane, a deflector base plate mountable adjacent the trailing edge of an open bomb bay or other cavity of a bomber...
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3888175 |
Mechanical stabilizer
1. In a munition having a body and a rear base, said rear base having a fr and an outer flange defining a recess, The improvement comprising, in combination therewith, a rear stabilizer for...
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3881669 |
Method and apparatus for elimination of airfoil trailing vortices
Herein are disclosed a method and apparatus for eliminating or substantially attenuating the dangerous vortices which typically trail the airfoils of heavier-than-air aircraft in flight. The...
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3877665 |
Fuselage configuration
A fuselage configuration for aircraft flying at high subsonic speeds is constructed of a first portion defined by a portion of the surface of a respective three-dimensional, spindle-shaped...
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3837577 |
MINIMUM DRAG VARIABLE AREA EXHAUST NOZZLE
A variable area exhaust nozzle has the external contour of its flaps forming a substantially continuous afterbody surface with the downstream portion of the engine nacelle when the flaps are...
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3794274 |
AIRCRAFT STRUCTURE TO REDUCE SONIC BOOM INTENSITY
The structure of a fuselage of an aircraft having a plurality of apertures therein which permit high pressure air to be received within the confines of the exterior portion of said fuselage, and...
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3776489 |
SONIC BOOM ELIMINATOR
A structure for eliminating sonic booms developed by the major sub-structures of a supersonic aircraft in accordance with the selective positioning of the exhaust gases of the aircraft, air inlets...
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3774867 |
ACOUSTIC WING STALL DELAYING DEVICE
An apparatus for delaying the onset of wing stall in an aircraft having a plurality of acoustic resonators positioned in the forward portion of the upper surface of the wing with a movable panel to...
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3750986 |
AIRCRAFT PANTS STRUCTURE
A wheel pants structure is provided for aircraft having landing gear including wheel and axle means which are supported in a substantially fixed position relative to the aircraft fuselage. The...
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3701500 |
AIRCRAFT WHEEL WELL SEAL
An annular inflatable seal of resilient elastomeric material with the radially outer wall mounted in the wheel well and the radially inner wall spaced from the tire in the deflated condition. The...
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3693913 |
FLUID FLOW CONTROL DEVICE
A fluid flow control device deals with undesirable aerodynamic characteristics associated with cylinder-plus-hemisphere shaped airborne radar housings when positioned in a generally lateral...
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3662554 |
ELECTROMAGNETIC PROPULSION DEVICE FOR USE IN THE FORWARD PART OF A MOVING BODY
At least two parallel annular electrodes are disposed on the outside dielectric surface of the body starting from the forward edge thereof, perpendicularly to the direction of the symmetry axis of...
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3656302 |
MULTIPLE JET, AIRCRAFT ENGINE EXHAUST INSTALLATION
A multiple jet, aircraft engine exhaust installation comprising at least two engine exhaust nozzles, aircraft structure joining said exhaust nozzles, means for supplying fuel to be burnt at a...
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3643901 |
DUCTED SPIKE DIFFUSER
A ducted spike diffuser for reducing forebody drag and rain erosion of blunt bodies operating at supersonic speeds. The spike has a directed conical front section to receive high-pressure oncoming...
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3620484 |
METHOD AND STRUCTURE FOR REDUCTION OF SHOCK WAVES
A method of and apparatus for reducing shock waves created by solid bodies having supersonic speed relative to a gas, and reducing and even eliminating the sonic boom which accompanies the shock...
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3620485 |
DIRIGIBLE
A lighter-than-air aircraft having a central passageway longitudinal of the aircraft and a plurality of passageways radiating laterally therefrom. Suitable air moving means are located in said...
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