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| Number | Title | Issue Date |
| 4854127 | Bimodal swirler injector for a gas turbine combustor An improved air swirler and fuel injector for a gas turbine combustor system employs primary fuel injection into a primary recirculation combustion zone supplied by an inner annulus of swirling air at high fuel-air ratio under low power conditions. A sele... | 08/08/1989 |
| 4852355 | Dispensing arrangement for pressurized air An air dispensing arrangement within a gas turbine engine in which the energy of the pressurized air exiting the compressor is nonuniform. The higher energy pressurized air is dispensed by at least one conduit to the combustor and to other components, the... | 08/01/1989 |
| 4851090 | Method and apparatus for electrochemically machining airfoil blades In accordance with a preferred, exemplary embodiment of the invention, a method of forming a blisk from a workpiece is disclosed. The workpiece includes a blank having oppositely facing first and second faces defined by a radially inner housing, a radiall... | 07/25/1989 |
| 4849030 | Dispersion strengthened single crystal alloys and method The present invention is directed to single crystal superalloys of eutectic or near-eutectic composition. The high temperature mechanical properties of the superalloys of the invention are improved by precipitation of dispersoids of a phase of the eutecti... | 07/18/1989 |
| 4847687 | Video ranging system A non-contacting sensing method and apparatus is disclosed for positioning a surface, such as the surface of a workpiece. A collimated light beam is projected through a lens having a known focal length onto the surface. Suitable means such as a television... | 07/11/1989 |
| 4845556 | Video spot detector A non-contacting sensing system for measuring dimensions or determining the position of an object, such as a workpiece in an automated machining process. A small diameter light beam is projected and focused at a predetermined location. A television camera... | 07/04/1989 |
| 4842484 | Blade gearing and pitch changing mechanisms for coaxial counterrotating propellers A lightweight counterrotatable propeller system driven by a rotatable shaft is disclosed. The system includes first and second counterrotatable propellers, each propeller including a plurality of blades mounted on first and second hubs, respectively. Each... | 06/27/1989 |
| 4841723 | Multiple-propellant air vehicle and propulsion system A propulsion system and method having means for cooling the combustor liner and throat liner of a rocket casing by endothermic pyrolysis of a hydrocarbon fuel in the fuel passageway which is adjacent to and surrounding the combustor liner and the throat l... | 06/27/1989 |
| 4840025 | Multiple-propellant air vehicle and propulsion system A woven, silicon carbide fiber inner wall forms a combustor liner and a nozzle throat liner, and a woven silicon carbide fiber outer wall is spaced from the inner wall to form a fuel passageway. The silicon carbide fibers are woven to conduct heat from th... | 06/20/1989 |
| 4835959 | Multiple-propellant air vehicle and propulsion system In a propulsion system which includes a rocket casing having a combustor chamber with a combustor liner and a nozzle throat chamber with a nozzle throat liner; a fuel passageway adjacent to and surrounding the combustor liner and nozzle throat liner which... | 06/06/1989 |
| 4833881 | Gas turbine engine augmentor A new and improved gas turbine engine augmentor including a liner having a film-coolable first portion joined to a convection-coolable second portion is disclosed. A cooling gas, such as fan bypass air, is channeled to the liner for film cooling the first... | 05/30/1989 |
| 4832568 | Turbomachine airfoil mounting assembly An assembly for mounting a plurality of circumferentially spaced and radially extending airfoils. In a preferred embodiment the assembly comprises a plurality of arcuate mounting fairings each including a central boss having at least one radially extendin... | 05/23/1989 |
| 4826400 | Curvilinear turbine airfoil A turbomachinary airfoil in one form comprises a pressure side and a suction side curved circumferentially outward in the direction that the suction side faces. The invention is effective for reducing both radial and circumferential boundary layer pressur... | 05/02/1989 |
| 4817378 | Gas turbine engine with augmentor and variable area bypass injector A plurality of circumferentially displaced hollow members are positioned between an outer bypass duct and the center body of the core engine. Each of the hollow members is open at the radially outward end thereof for receiving relatively cool gas from the... | 04/04/1989 |
| 4817890 | Multiple-propellant air vehicle and propulsion system An aircraft having a propulsion system which utilizes a dual fuel system having an inner tank for containing a cryogenic fuel and an outer tank surrounding the inner tank for containing a second fuel wherein the second fuel is a fuel having a low freezing... | 04/04/1989 |
| 4816729 | Closed loop machining system calibration This application deals with apparatus for calibrating an automated machining apparatus. The calibration apparatus comprises a tool probe and a system accuracy check gauge rigidly fixed to the workpiece loading mechanism of the machining apparatus. This ar... | 03/28/1989 |
| 4813229 | Method for controlling augmentor liner coolant flow pressure in a mixed flow, variable cycle gas The present invention discloses means and method for modulating the bypass flow in a mixed flow, variable cycle gas turbine engine. The engine includes means to vary the bypass flow and includes an augmentor and liner with coolant supplied by a portion of... | 03/21/1989 |
| 4811556 | Multiple-propellant air vehicle and propulsion system A propulsion system which utilizes hydrocarbon and hydrogen fuel, having means for cooling of the combustor liner and throat liner of a rocket casing by endothermic pyrolysis of the hydrocarbon in the presence of hydrogen in the fuel passageway. The hydro... | 03/14/1989 |
| 4809498 | Gas turbine engine An improved gas turbine engine is disclosed. The engine includes counterrotating first and second turbine rotors without an intervening nozzle. Disclosed also are means for obtaining pitch relative outlet velocity greater than pitch absolute inlet velocit... | 03/07/1989 |
| 4807433 | Turbine cooling air modulation Disclosed are a cooling air modulation apparatus for and method of operation for a gas turbine engine which are effective for increasing engine operating efficiency. According to one embodiment of the invention, the apparatus includes a first inducer mean... | 02/28/1989 |
| 4799633 | Laminar flow necelle An improved nacelle is provided for housing an aircraft engine and reducing aerodynamic drag during aircraft operation. In one embodiment, the nacelle houses a gas turbine engine and comprises a leading edge and a trailing edge, having a reference chord e... | 01/24/1989 |
| 4796423 | Sheet metal panel A sheet metal panel comprising a bent region is disclosed. The region defines a first arc of intersection with a first plane and a second arc of intersection with a second plane. The second arc has a radius of less than twice the thickness of the panel.... | 01/10/1989 |
| 4796721 | System for displacing a power pack from a vehicle A system used in a vehicle having a ground-engaging attitude to effect the displacement from a compartment in the vehicle of a power pack adapted for driving the vehicle. The system elevates the power pack from a vehicle driving position within the compar... | 01/10/1989 |
| 4793770 | Gas turbine engine frame assembly A fairing for mounting onto a gas turbine frame to isolate the frame from the hot gases passing the flowpath. The fairing includes mating forward and aft annular sections with each section having an outer wall and an inner wall defining the flowpath there... | 12/27/1988 |
| 4791783 | Convertible aircraft engine A convertible aircraft engine, capable of turboshaft and/or turbofan modes of operation, is provided in a configuration that combines certain components to permit variation in bypass flow to match engine airflows with the mode of engine operation. The pro... | 12/20/1988 |
| 4790133 | High bypass ratio counterrotating turbofan engine A gas turbine engine comprising a core gas generator engine for generating combustion gases, an additional power turbine, an additional fan section, and a booster compressor is disclosed. The power turbine includes first and second counterrotatable turbin... | 12/13/1988 |
| 4787201 | Method and apparatus for controlling multiple engine aircraft Control means and method for steering an aircraft is disclosed. The aircraft includes engines positioned on opposite sides of its longitudinal axis. The method comprises: selecting an aircraft heading; sensing a deviation from said heading; and varying th... | 11/29/1988 |
| 4775602 | Metallic coating of improved life A method for improving oxidation resistance life of a metallic coating deposited on a metallic alloy including boron treats the alloy to reduce the boron prior to depositing the coating. The article provided by using a diffusion coating method has a diffu... | 10/04/1988 |
| 4772033 | Flexible duct joint utilizing lip in recess in a flange A flexural joint for connecting opposing ends of first and second annular ducts. The joint includes a lip which extends outwardly from the first duct and a flange member which extends outwardly from the second duct. The flange member contains a recess whi... | 09/20/1988 |
| 4772372 | Electrodes for electrochemically machining airfoil blades In accordance with a preferred, exemplary embodiment of the invention, an apparatus for forming a blisk from a workpiece is disclosed. The workpiece includes a blank having oppositely facing first and second faces defined by a radially inner base, a radia... | 09/20/1988 |
| 4767267 | Seal assembly A seal assembly for reducing fluid leakage around a circumferential periphery of an annular nozzle stage in a gas turbine engine includes an abradable annular steel member having an annular attachment ring attached to an outer surface, the ring including ... | 08/30/1988 |
| 4767276 | Retainer ring A retainer ring clamps, for example, a turbine cooling plate to a rotatable turbine disc. The retainer ring has a wedge-shaped channel that engages annular flanges on the cooling plate and the disc. The wedge-shaped channel converts radial forces on the r... | 08/30/1988 |
| 4763482 | Swirler arrangement for combustor of gas turbine engine A gas turbine engine has an annular combustor structure which includes a plurality of annularly displaced combustion zones. A fuel nozzle is positioned in each combustion zone for supplying fuel thereto. A swirler is supported on each of the fuel nozzles ... | 08/16/1988 |
| 4763008 | Ionization detector with conductive signal and ground traces An ionization detector comprises a substrate having detector traces adjacent conductive grounded traces to minimize crosstalk and charge leakage between the detector traces and to reduce the effects of contamination and humidity.... | 08/09/1988 |
| 4761116 | Turbine blade with tip vent In a turbomachine having stationary and rotating bladed stages, the blades of the rotating bladed stage are cooled by ducting cooling fluid into an interior cavity formed in each blade. Each rotating blade has a tip portion which is closely adjacent an an... | 08/02/1988 |
| 4758129 | Power frame A rotor stage disposed within an annular fluid flowpath in a turbomachine is disclosed. The rotor stage includes outer and inner rings and a plurality of first and second airfoils. The outer and inner rings define flowpath surfaces for said flowpath. The ... | 07/19/1988 |
| 4755753 | Eddy current surface mapping system for flaw detection A system and method for nondestructive testing of a part using eddy current impedance measuring techniques. An eddy current probe is positioned above the surface of the part for measuring an induced eddy current signal and generating an electrical signal ... | 07/05/1988 |
| 4749332 | Method and apparatus for degrading antimisting fuel A centrifugal pump is provided for degrading antimisting fuel. The centrifugal pump has a rotary impeller closely surrounded by a vaned diffuser for receiving fuel therefrom. The diffuser includes a plurality of recirculation channels disposed along its i... | 06/07/1988 |
| 4743166 | Blade root seal A rotor assembly comprising a disk, blade, and seal is disclosed. The disk has a circumferential blade retaining slot disposed therein. The blade includes an airfoil and root separated by a platform so that the root is mountable within the slot and the pl... | 05/10/1988 |
| 4743162 | Fluid transfer seal for transferring fluid across a rotating boundary A fluid transfer seal for transferring hydraulic fluid between differentially rotatable components, such as between the stator and rotor of a gas turbine engine. A circumferential channel is formed about the stator with a fluid passageway connecting the c... | 05/10/1988 |
