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| Number | Title | Issue Date |
| 8191834 | Cooling system on the basis of suction of a boundary layer A cooling system on board an aircraft includes a device for removing by suction a boundary layer, and a heat exchanger through which flows the boundary layer air that has been removed by suction. Cooling by way of a ram air channel can be reduced or entirely stopped... | 06/05/2012 |
| 8091837 | Reduction of frictional losses in the region of boundary layers on surfaces, around which a fluid flows An aerodynamic body with a plurality of nozzles for throttling a fluid flow to be removed by suction through the nozzles in a self-regulated fashion is disclosed. The aerodynamic body according to one example, includes a plurality of throttling nozzles with a thrott... | 01/10/2012 |
| 7866609 | Passive removal of suction air for laminar flow control, and associated systems and methods Passive removal of suction air for producing a laminar flow, and associated systems and methods are disclosed. One such method includes forming a laminar flow region over an external surface of an aircraft by drawing air through the external surface and into a plenu... | 01/11/2011 |
| 7837155 | Boundary layer suction arrangement A suction arrangement for drawing off a boundary layer on an aircraft comprises a suction arrangement including an outer skin having suction surfaces in critical flow areas, and at least one air breathing engine providing suction. Bleed air is drawn from a comparati... | 11/23/2010 |
| 7770846 | Fixing system for a leading edge to the structure of an aircraft lift plane Fixing system for a modular leading edge (2) to the structure of an aircraft lift plane (1), in which the leading edge (2) has a covering (4) formed from a first lamina (5) and a second lamina (6) between which there is an i... | 08/10/2010 |
| 7757994 | Method and device for suctioning the boundary layer A method for suctioning the boundary layer at the surface (1) of an aircraft having an air-conditioning system (4), at whose flow-critical points of the surface multiple suction openings (2) are provided, the air quantity suctioned via these bei... | 07/20/2010 |
| 7735782 | Flow surface for a three-dimensional boundary-layer flow, especially on a swept wing, a swept tail plane or a rotor A flow surface (16), e.g. on a swept aircraft wing, has a three-dimensional boundary-layer flow. The surface is defined by a spanwise direction (z) and a chordwise direction (x). In or on the flow surface excitation locations (22) are arranged, excitin... | 06/15/2010 |
| 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 |
| 7338011 | Method making it possible to prevent vibration of a rudder of an aircraft and aircraft using this method A method for preventing vibration of a rudder of an aircraft may have, on a lateral aerodynamic surface of the aircraft's rudder, a protruding aerodynamic element capable of generating an aerodynamic effect tending to rotate the rudder about its articulation axis. A... | 03/04/2008 |
| 7331421 | Flow restrictors for aircraft inlet acoustic treatments, and associated systems and methods Flow restrictors for aircraft inlet acoustic cores, and associated systems and methods are disclosed. A system in accordance with one embodiment of the invention includes an inlet flow surface having multiple openings, and an acoustic treatment positioned adjacent t... | 02/19/2008 |
| 7322202 | Electric motor driven supercharger with air cycle air conditioning system An inventive air conditioning system includes an air conditioning pack for receiving pressurized air and converting the pressurized air into conditioned air for an aircraft. Pressurized air is provided by a compressed air supply system that is fluidly connected to t... | 01/29/2008 |
| 7311287 | Methods 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 |
| 7258302 | Aircraft internal wing and design An aircraft designed with three wings located on either side of the fuselage. The forward wing has a downward angle with a curved top and bottom surface. The upper wing is located towards the rear of the aircraft and above the forward wing. The lower wing is located... | 08/21/2007 |
| 7152829 | Perforated skin structure for laminar-flow systems The outer skin (100) of an aerodynamic body (40) has perforations (200) arranged in particular patterns in respective spanwise extending groups or bundles (250). Each perforation is preferably a micro-slot with a length of 100 to 3000 μm... | 12/26/2006 |
| 7134631 | Vorticity cancellation at trailing edge for induced drag elimination Wing tip vortices are evident from airliner vapor trails, and helicopter blade slap. Elliptically loaded high aspect ratio tapered wings have minimum induced drag but cannot eliminate it. Different methods are disclosed herein, for upper and lower surface boundary l... | 11/14/2006 |
| 7048230 | Laminar flow nacelle for an aircraft engine A laminar flow nacelle for an aircraft engine (10) has an outer member (26) defining an aerodynamic shape. The nacelle (24) has an inner member (28) defining a chamber (30) with the outer member (26) of the nacelle (24 | 05/23/2006 |
| 7036656 | Vacuum belt conveyor for plates A conveyor 1 for holding glass plates 2 in position during grinding and drilling operations comprising one or more than one belt 3, 3′ 3″ having a rotating surface and a suction generator 6 for generating a vacuum on the surface. ... | 05/02/2006 |
| 6908062 | Reduced bleed vapor compression cycle environmental control system for aircraft The present invention relates to A reduced bleed vapor compression cycle environmental control system for an aircraft. The environmental control system provides conditioned external ram air to compartments such as the cabin, the flight deck, avionics compartment, an... | 06/21/2005 |
| 6905092 | Laminar-flow airfoil An airfoil having a fore airfoil element, an aft airfoil element, and a slot region in between them. These elements induce laminar flow over substantially all of the fore airfoil element and also provide for laminar flow in at least a portion of the slot region. The... | 06/14/2005 |
| 6866234 | Method and device for altering the separation characteristics of air-flow over an aerodynamic surface via intermittent suction Active flow control devices and methods are disclosed for improving the aerodynamic efficiency of airfoils. The devices and methods pertain to applying intermittent suction or intake of low-energy boundary layer fluid into airfoils in a manner delaying or eliminatin... | 03/15/2005 |
| 6866233 | Reconfigurable porous technology for fluid flow control and method of controlling flow The present invention relates to a reconfigurable porous technology for fluid flow control system and more particularly to reconfigurable porosity fluid flow control system for vehicles such as aircraft, missiles, ground and water vehicles to improve the performance... | 03/15/2005 |
| 6302360 | Vortex generation for control of the air flow along the surface of an airfoil Apparatus for generating vortices to control the flow of air across a airfoil of an aircraft includes a series of pressure active regions arranged along the leading edge of the airfoil. The pressure active regions include spaced apart valves connected to ... | 10/16/2001 |
| 6216982 | Suction device for boundary layer control in an aircraft A system for achieving a boundary layer control by sucking at least a portion of the boundary layer air flow through perforated or porous suction areas on the outer skin of the wings or other areas of the aircraft, includes one or more jet pumps (7) arran... | 04/17/2001 |
| 6135395 | Aircraft wing leading edge high lift device with suction An aircraft wing, wing assembly and method of reducing drag are provided. The wing asembly includes a main wing portion (10) and a leading edge high lift portion (12). The high lift portion is movable between a retracted position in which it generally mer... | 10/24/2000 |
| 6068328 | Vehicular boundary layer control system and method A vehicular boundary layer control system utilizing a series of external perforation arrays and suction sources controlled by a digital signal processor or microprocessor. Each array of perforations in the outer vehicle skin is served by a plenum chamber,... | 05/30/2000 |
| 6050527 | Flow control device to eliminate cavity resonance A flow control device and method for eliminating flow-induced cavity resonance within a closed or nearly closed end flow passage (20) having an inlet opening (30) defined between an upstream inlet edge (32) and a downstream inlet edge (34). The passage ac... | 04/18/2000 |
| 5971327 | Mesoflap passive transpiration system and method for shock/boundary layer interaction control A passive transpiration system for controlling interaction between turbulent boundary layer air and an impinging shock during supersonic airflow by application of a panel including passively activated mesoflaps that direct air circulation through a cavity... | 10/26/1999 |
| 5884873 | Suction generator system in an aircraft for maintaining a laminar boundary flow Boundary layer air on the skin structure of an aircraft is sucked off through suction holes in the aircraft skin structure by a least one ejector pump. The ejector pump is operated by at least one of several air flow sources. One source is the excess pres... | 03/23/1999 |
| 5823468 | Hybrid aircraft A hybrid aircraft is taught having VTOL, R-VTOL and S-STOL capabilities. The aircraft has a lifting body hull and four wing sections arranged in tandem which are pivotally moveable about their neutral axis. Each wing section has mounted thereon a pivotal ... | 10/20/1998 |
| 5806793 | Cooling device for a turboshaft engine on an aircraft A cooling device for an aircraft turboshaft engine includes a boundary layer suction device formed by a perforated external wall portion of the aircraft, a collector on the inside of the wall portion for receiving the air flowing in through the perforatio... | 09/15/1998 |
| 5798465 | Method for actively damping global flow oscillations in separated unstable flows and an apparatus for performing the method The method for damping global flow oscillations (20a.x, 20b.x) in a flowing medium in the region of an unstable flow (10) separating itself from at least one boundary surface (11, 12) is comprised of detecting the global flow oscillations with a sensor sy... | 08/25/1998 |
| 5779196 | Ram air drive laminar flow control system An improvement to supersonic laminar flow control suction systems, including an inlet air duct (32) for providing subsonic ram engine inlet air, is provided. The inlet air duct (32) supplies air pressure power to one or more turbines of suction system com... | 07/14/1998 |
| 5772156 | Aircraft boundary layer control system with discharge transpiration panel An improvement to boundary layer control system, including a transpiration panel (58) for transpiring suction air in a distributed manner, is provided. The transpiration panel (58) replaces the discharge nozzle of prior art flow control systems. The trans... | 06/30/1998 |
| 5740991 | Method and apparatus for optimizing the aerodynamic effect of an airfoil A method and an apparatus are provided for optimizing the aerodynamic effect of the airfoil of an aircraft by defined changes in camber. The method includes the following steps: a. determining the flow for the flight condition caused by the change in camb... | 04/21/1998 |
| 5618363 | Method of manufacturing a porous material A porous material is manufactured by weaving polycarbonate fibres through a tow of carbon fibres which has been pre-impregnated with an epoxy resin. A second layer of pre-impregnated carbon fibres are superimposed on the woven layer and the epoxy resin is... | 04/08/1997 |
| 5590854 | Movable sheet for laminar flow and deicing A movable sheet overlying a wing is disclosed that creates laminar flow over its exposed surface. The movable sheet serves as an integral, retractable shield for protecting a suction support structure of a wing against contamination, and also serves as a ... | 01/07/1997 |
| 5591511 | Superplastically formed structure having a perforated skin A perforated sheet is diffusion bonded to a thin solid sheet. Each of the perforations of the perforated sheet is tapered, having a maximum diameter at the surface that is not bonded to the thin sheet and a smaller diameter at the surface that is bonded t... | 01/07/1997 |
| 5542630 | Control of fluid flow Measures are disclosed for modifying the boundary layer flow over fluid dynamic surfaces using patterns of riblets which are set at a peak-to-peak spacing substantially less than 80 wall units and which are provided with boundary layer suction means compr... | 08/06/1996 |
| 5535967 | Floating speed electrically driven suction system A floating speed electrically driven suction system for sucking boundary layer air flow off the external surface of an aircraft. A variable speed electrical generator drives a variable speed electrical motor which in turn drives a variable speed pneumatic... | 07/16/1996 |
| 5531406 | Flow-vectored trailing-edge for airfoils and jets Apparatus and method for airflow vectoring control for an airfoil, a two dimensional jet, and the like. An airfoil or jet with a blunt open edge and a suction system for sucking air into the open edge. A blower system for blowing air out through the open ... | 07/02/1996 |
