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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 8181905 | Aircraft engine nacelle with translating inlet cowl A nacelle for a turbofan aircraft engine having a fan case with a fan case forward edge includes an inlet inner barrel having an inner barrel forward edge and an inner barrel aft edge. The inner barrel aft edge is configured to be affixed to the fan case forward edg... | 05/22/2012 |
| 8141816 | AFT inlet duct mounted door actuator An inlet door system including an aft inlet duct mounted door actuator providing RAM air to an auxiliary power unit (APU) contained within an aircraft is provided. The inlet door system includes an inlet duct, the aft inlet duct mounted door actuator, and a door. Th... | 03/27/2012 |
| 8141818 | Ram door assemblies A ram door assembly is provided for an intake opening of an intake duct of an auxiliary power unit of an aircraft. The ram door assembly includes a ram door hingeably mounted adjacent to the intake opening and moveable between an open position to a closed position. ... | 03/27/2012 |
| 8096499 | Device for feeding combustion air to an engine of an aircraft A device for feeding combustion air to an engine disposed in an interior of an aircraft is comprised of a primary air inlet duct extending between an exterior surface of the aircraft and the engine, wherein the air inlet duct extends from air inlets disposed in a fi... | 01/17/2012 |
| 8096498 | Rotating auxiliary power unit air inlet door An inlet door assembly includes an inlet door rotatable about an axis of rotation. ... | 01/17/2012 |
| 8052083 | Bird deflector and air replacement system technical field A bird deflector and air replacement system for a jet engine, the bird deflector being conical or arcuate in shape as formed by suitable longitudinal and lateral interconnected bars, and the air replacement apparatus being one of a frustum or a selectively perforate... | 11/08/2011 |
| 7975961 | Air induction control Air induction control systems and methods for aircraft are provided. A particular aircraft includes a fuselage, a pair of wings and an engine. The aircraft also includes an inlet defining an aperture to receive air for delivery to the engine. The inlet has a longitu... | 07/12/2011 |
| 7967241 | Supersonic aircraft jet engine installation Jet engine inlet structure of a supersonic aircraft comprising the structure having an inlet ramp and an cowl lip spaced outwardly of the ramp so that entering air flows between the ramp and lip, the lip and ramp configured to produce a first oblique shock that exte... | 06/28/2011 |
| 7967240 | Formed structural assembly and associated preform and method A superplastically formed structural assembly is provided, as is an associated preform and method for forming such an assembly. The assembly includes a skin member and a support member that are joined to define a space between the members and between the joints. The... | 06/28/2011 |
| 7954754 | Mechanical acoustic noise generator system for scramjet engine A noise generator system is provided with each noise generator being pivotally mounted to a mounting surface associated with the air intake of a turbineless jet engine. Each noise generator is positioned so as to convert a laminar or transitional air stream into a t... | 06/07/2011 |
| 7866600 | Integrated engine air particle filter assembly An engine air particle filter system configured to selectively receive one of at least a first tray which supports a first filter media and a second tray which supports a second filter media different than the first filter media. ... | 01/11/2011 |
| 7866599 | Integrated inward turning inlets and nozzles for hypersonic air vehicles A hypersonic waverider aircraft is disclosed that includes a first engine and an inlet including a throat. The inlet is configured to generate three-dimensional flow compression during hypersonic flight with a weak shock wave that begins at the leading edge surfaces... | 01/11/2011 |
| 7857257 | Aircraft thermal management system with reduced exhaust re-ingestion A thermal management system includes a cooling duct system that locates a ram air intake and an exhaust through a first aircraft surface above a second aircraft surface which locates a fan intake. During ground operations, an anti-re-ingestion door is open and a ram... | 12/28/2010 |
| 7837142 | Supersonic aircraft jet engine Jet engine inlet structure of a supersonic aircraft comprising the structure having an inlet ramp and an cowl lip spaced outwardly of the ramp so that entering air flows between the ramp and lip, the lip and ramp configured to produce a first oblique shock that exte... | 11/23/2010 |
| 7832684 | Ram air channel for the supply of ambient air in an aircraft A ram air channel (10) for the supply of ambient air in an aircraft includes a first air inlet (12) and a main flow channel (16) which extends downstream of the first air inlet (12). In order to guarantee that the systems on board the air... | 11/16/2010 |
| 7784732 | Boundary-layer-ingesting inlet flow control system A system for reducing distortion at the aerodynamic interface plane of a boundary-layer-ingesting inlet using a combination of active and passive flow control devices is disclosed. Active flow control jets and vortex generating vanes are used in combination to reduc... | 08/31/2010 |
| 7735776 | Air inlet for a turbofan engine The present invention relates to an air inlet for a nacelle of a jet engine with a front fan, comprising an upper part (115S), a lower part (115I), an inner lateral part (115int) and an outer lateral part (ext), defining a leading edge ( | 06/15/2010 |
| 7721989 | Multi-path inlet for aircraft engine An inlet for an aircraft, missile or other high speed airborne mobile platform, to receive intake air and compress the intake air for delivery to an engine of the mobile platform. The inlet has an array of inlet elements placed in side-by-side arrangement. Each inle... | 05/25/2010 |
| 7690595 | System, method, and apparatus for throat corner scoop offtake for mixed compression inlets on aircraft engines A system, method, and apparatus for throat corner scoop offtake for mixed compression inlets for high speed aircraft engine applications is disclosed. The throat corner scoops are small air intakes located inside the large mixed compression inlet. They are positione... | 04/06/2010 |
| 7637455 | Inlet distortion and recovery control system An air induction system for an aircraft to control distortion and pressure recovery for improved aerodynamic performance. The system includes an inlet and at least one dielectric barrier discharge generator positioned upstream of the engine for imparting momentum to... | 12/29/2009 |
| 7631836 | Jet engine nacelle for a supersonic aircraft A jet engine nacelle for a supersonic aircraft may include an air inlet structure that has an inlet face with an elliptical conical cross section. The elliptical conical cross section is defined by the intersection of a conical shock wave generated by a conical comp... | 12/15/2009 |
| 7624944 | Tandem air inlet apparatus and method for an airborne mobile platform A tandem inlet apparatus for use with a high speed mobile platform, for example a commercial or military aircraft. The tandem inlet apparatus includes a Pitot inlet for feeding air to a cabin air compressor (CAC) of an air conditioning pack carried on the mobile pla... | 12/01/2009 |
| 7618006 | Ram air inlets for use with aircraft environmental control systems and other aircraft and non-aircraft systems Ram air inlets for use with aircraft environmental control systems and other aircraft and non-aircraft systems are described herein. In one embodiment, a ram air inlet configured in accordance with the present invention includes an inlet lip spaced apart from an inl... | 11/17/2009 |
| 7600714 | Diffusing air inlet door assembly An inlet door assembly for reducing air pressure loss and enhancing performance of an auxiliary power unit (APU) contained within an aircraft housing is provided. The inlet door assembly includes a duct and a diffuser. The duct, which is configured to be movably cou... | 10/13/2009 |
| 7600713 | Pre-hung inlet door system A pre-hung air inlet door assembly comprises an inlet door, a door box frame, and an actuation system. The door box frame is fastened to the support structure of an aircraft. The inlet door is operationally connected to the actuation system. The entire pre-hung air ... | 10/13/2009 |
| 7597283 | Auxiliary power unit intake duct with aero-acoustic guide vanes An auxiliary power unit intake duct for an aircraft, comprising an internal straight portion 1a, an internal first bend portion 1b and an internal second bend portion 1c, extending between ... | 10/06/2009 |
| 7581694 | Vertical tail unit for aircraft and aircraft equipped with same A vertical tail unit for an aircraft and an aircraft equipped with the vertical tail unit. The vertical tail unit is provided with an engine. The engine extends cantilevered beyond a fin of the vertical tail unit and is secured to the fin by a mount. The mount is at... | 09/01/2009 |
| 7543777 | Air guiding flap of an aircraft comprising control of the pressure forces impinging thereon, process for adjusting the position of an air guiding flap and ram air system including such an air guiding flap An air guiding flap of an aircraft wherein one surface thereof faces an air duct and is exposed to a prevailing pressure in the air duct and whose opposite surface is exposed to the pressure of the relative wind flowing past the aircraft. The air guiding flap compri... | 06/09/2009 |
| 7506838 | Air intake structure for aircraft engine The aft stiffening frame of an air intake structure for an aircraft engine nacelle is made with an inflection area such that the part between the inflection area and one of its ends could be subjected to a large deformation when a constraint occurs in the direction ... | 03/24/2009 |
| 7506839 | Engine airframe J-seal damper An aircraft fuselage intake duct seal dampens vibration in a compression seal member of an engine case inlet. The intake duct seal includes an inner leg that engages a stationary portion of the compression seal member and comprises a plurality of plenums for allowin... | 03/24/2009 |
| 7461814 | Dual action inlet door and method for use thereof An inlet door assembly and method for reducing noise from an auxiliary power unit (APU) contained within an aircraft housing is provided. The inlet assembly includes an inlet duct, an actuator, and a door. The inlet duct is configured to extend from the auxiliary po... | 12/09/2008 |
| 7461813 | Air input device for a turboprop engine An air intake layout for a turboprop. A nacelle surrounding an intake section of the turboprop behind the fan propeller can be moved away from the main part of the nacelle and can be divided into two parts that may be extracted so as to leave full access to the pane... | 12/09/2008 |
| 7431125 | Composite muffler for use with airborne auxiliary power unit The present invention provides a composite muffler for use with an auxiliary power unit. The composite muffler comprises a composite outer can, an annular baffle, an acoustic liner, and a thermal barrier. The composite outer can is disposed substantially symmetrical... | 10/07/2008 |
| 7429018 | Variable fluid intake with ramp and inflatable bag Methods and apparatus for a fluid inlet according to various aspects of the present invention comprise a housing and a ramp at least partially within the housing. The housing and the ramp define a passage through which air may flow to the engine and a cavity on the ... | 09/30/2008 |
| 7395657 | Flade gas turbine engine with fixed geometry inlet An aircraft propulsion system includes a gas turbine engine having a fan section, at least one row of FLADE fan blades disposed radially outwardly of and drivingly connected to the fan section, the row of FLADE fan blades radially extending across a FLADE duct circu... | 07/08/2008 |
| 7383679 | Air intake structure for aircraft engine Stiffening means are added into an air intake structure of an aircraft engine nacelle, to stiffen this structure, in order to prevent any modification to the shape of the structure, for example following suction of the intake lip inwards the fan duct. The stiffening... | 06/10/2008 |
| 7364118 | Propulsion arrangement In order to achieve greater operational efficiency a propulsive arrangement is provided in which a relatively large number of small propulsive assemblies 9; 31, 32, 33 are provided in aircraft structures in particular the wing 7; 30. The assemblies ... | 04/29/2008 |
| 7357351 | Linear shock wave absorber A linear cavity is provided on the leading edge of an object that is subject to the flow of liquids or gasses, where said cavity preferably has a wall that follows the curvature of a diminishing sine wave, although other configurations are possible that do not follo... | 04/15/2008 |
| 7350619 | Auxiliary power unit exhaust duct with muffler incorporating an externally replaceable acoustic liner Methods and apparatus are provided for an exhaust duct having an externally replaceable acoustic liner. The exhaust duct includes a forward section that is configured to be axially coupled with a bulkhead collar on the aircraft, a body section that is coupled to the... | 04/01/2008 |
| 7344111 | Reversible space plane A reversible aerospace plane includes an air intake at a first end of the aerospace plane, at least one heat exchanger disposed in the aerospace plane, an engine at a second end of the aerospace plane, wherein the aerospace plane is configured to accelerate in a fir... | 03/18/2008 |
