Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 4713935 | Vectorable nozzles for aircraft One major problem associated with the design of high-speed vertical take-off or landing aircraft is the requirement to have the front vectorable nozzles of the aircraft deployed in the airstream which passes over the fuselage of the aircraft when they are... | 12/22/1987 |
| 4679394 | Gas turbine engine power plant A nozzle structure for a gas turbine power plant for a V.T.O.L. or S.T.O.L. type aircraft includes a main engine and at least one auxiliary engine; the efflux from the at least one auxiliary engine may be directed downwardly or alternatively horizontally ... | 07/14/1987 |
| 4610410 | Compound helicopter and powerplant therefor A compound helicopter shown in FIG. 1 of the drawings has wings 12 in addition to a helicopter rotor 14 and has twin powerplants 16 each including a low pressure compressor 18, a gas generator 20, a power turbine 22 driven by the gas generator and connect... | 09/09/1986 |
| 4605169 | Exhaust nozzle construction An engine nozzle construction having a flap nozzle at the end of an engine exhaust duct, said flap nozzle variably controlling exhaust flow providing a primary flow path, said flap nozzle being movable to a position to direct the exhaust flow from said ex... | 08/12/1986 |
| 4587803 | Valve for diverting fluid flows in turbomachines A valve for selectively changing the direction of flow of working fluid through a variable cycle engine which comprises a first and second compressor 14,16 spaced along a flow duct 26. The duct 26 having air intakes 42 leading to the second compressor 16 ... | 05/13/1986 |
| 4550877 | Streamlined nozzle for turbomachines A vectorable nozzle 17 comprising a fixed first duct 21 a rotatable second duct 22 scarfed at its rear end and a rotatable third duct 23 scarfed at its front end. The second and third ducts 22,23 are mounted in bearings 24,26 respectively and the bearing ... | 11/05/1985 |
| 4533095 | Duct means for aircraft A duct 11 for an aircraft comprises a flexible panel member 18 which is normally held in a non-fluid conducting condition adjacent the surface of the aircraft body by biass tension means 12, 13, so as to define a substantially continuous surface. On intro... | 08/06/1985 |
| 4519543 | Vectorable nozzles for turbomachines A vectorable nozzle 17 comprising a fixed first duct 21 a rotatable second duct 22 scarfed at its rear end and a rotatable third duct 23 scarfed at its front end. The second and third ducts 22,23 are mounted in bearings 24,26 respectively and the bearing ... | 05/28/1985 |
| 4482109 | Jet aircraft A jet aircraft is provided of the vertical or short take off and land (VSTOL) type which is a stable and controllable in all flight attitudes. The aircraft exhibits a high engine thrust/weight ratio which enables it to achieve shorter take-off, shorter la... | 11/13/1984 |
| 4474345 | Tandem fan series flow VSTOL propulsion system A propulsion system for vertical take off and landing aircraft includes a forward compressor fan (40) and an aft compressor fan (42) downstream of the forward fan and in series flow communication with the forward fan. The forward and aft fans are position... | 10/02/1984 |
| 4456203 | Aircraft propulsion system having a translatable, directionable exhaust nozzle An aircraft propulsion system is disclosed having an exhaust nozzle structure having an exhaust deflection structure extending within an exhaust duct to direction exhaust flow along selected flow paths. In its preferred embodiment, the exhaust deflection ... | 06/26/1984 |
| 4449678 | Pressure balance nonaxisymmetric high aspect ratio afterburner convergent nozzle An improved pressure balanced nonaxisymmetric high aspect ratio afterburner convergent nozzle of the type adapted to be mounted on a jet engine suspended from an airfoil's wing spar structure, and characterized by its simplicity of construction, ease and ... | 05/22/1984 |
| 4326686 | Fan jet engine bypass air delivery system for blown wing aircraft lift augmentation device Comparatively cool fan bypass air in the annular space surrounding the air compressor of a fan jet engine is diverted near the front of the engine into a duct leading to right and left hand aircraft wing leading edge ducts which in turn deliver the bypass... | 04/27/1982 |
| 4301980 | Propulsion system for a V/STOL airplane A propulsion system for an airplane to permit it to achieve vertical and/or short take-offs and landings. The propulsion system is integrated into a wing/nacelle unit and includes a thrust vectoring system. A separate flow turbofan engine is mounted in ea... | 11/24/1981 |
| 4248041 | Gas turbine engine power plant A V.S.T.O.L. gas turbine power plant includes a main gas turbine engine having an exhaust gas propulsion nozzle and a fan arranged within a fan duct, which duct terminates in two nozzles such that a portion of the fan air may be directed vertically downwa... | 02/03/1981 |
| 4230292 | Propulsion/control for VTOL vehicle A propulsion/control system for aircraft of the vertical takeoff and landing type having a body without wings or tail and relying entirely on fluid streams for effecting liftoff, propulsion, and control. The body has an air duct with an inlet adjacent the... | 10/28/1980 |
| 4222234 | Dual fan engine for VTOL pitch control A core engine with a single shaft driving both a forward and a rear fan, with the fans discharging into separate nozzles which are variable to direct exhaust gases in either the downward or rearward direction or in any direction therebetween. Separate flo... | 09/16/1980 |
| 4205813 | Thrust vectoring apparatus for a VTOL aircraft Cascades and associated blocker doors are provided in the lower section of a turbofan engine nacelle such that when the blocker doors are closed the bypass flow is diverted through the open cascades to produce vertical thrust. Vanes are provided in the ca... | 06/03/1980 |
| 4187999 | Vertical ascending and descending airplane The airplane of the present invention is of the vertical take-off and landing type powered by one or more jet engines which are mounted to provide thrust necessary for horizontal flight, movable panels direct exhaust gases downwardly toward the ground to ... | 02/12/1980 |
| 4132089 | Transmission of movement to a unit mounted on a rotatable carrier In order to drive a unit mounted on a carrier rotatable about an axis, the drive for the unit is transmitted from a unit actuator to the unit-drive mechanism on the carrier by a shaft-driven member so arranged that its rotation relative to the carrier is ... | 01/02/1979 |
| 4093122 | Integrated divergent exhaust nozzle thrust reverser A relatively simple variable area divergent exhaust nozzle and low drag afterbody integrated with a target-type thrust reverser and used in conjunction with a convergent nozzle for application to the propulsion system of a high performance jet powered air... | 06/06/1978 |
| 4071207 | Vertical take-off aircraft A wingless vertical take-off aircraft having multiple ducted propeller rotors with controllable pitch blades symmetrically mounted in the forward and the rear portions and on both sides of the aircraft with the ducts angled downwardly at an acute angle to... | 01/31/1978 |
| 4000854 | Thrust vectorable exhaust nozzle A gas turbine engine flight maneuverable nozzle for installation within an aircraft wing or the like is provided with pivotably connected convergent and divergent flaps partially defining an exhaust stream flow path. A third flap, pivotably connected to t... | 01/04/1977 |
| 3997134 | Fuselage tail jet engine thrust reverser Production of a downwardly and forwardly directed reverse thrust discharged from a reverse-thrust duct is controlled by a door in the rearward-discharge duct having its rearward portion pivotally mounted for swinging of its forward portion between a posit... | 12/14/1976 |
| 3981451 | Fan cascade thrust reverser A cascade thrust reverser for a fan-jet engine comprising a two portion shroud surrounding the engine forming a duct therebetween for the rearward directional flow of bypass gases. The forward portion of the shroud is fixed in position. The rear portion o... | 09/21/1976 |
| 3940097 | Exhaust flow deflector A deflector for reducing swirling flow spillover occurring when gas flowing hrough curved ducting attempts to exit into a freestream flow. When a gas flows through curved ducting it develops a swirling motion and when it attempts to exit into a freestream ... | 02/24/1976 |
