子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 221 | AERODYNAMIC STRUCTURE WITH ASYMMETRICAL SHOCK BUMP | US12735536 | 2009-02-17 | US20100301173A1 | 2010-12-02 | Norman Wood |
| An aerodynamic structure comprising a shock bump (3) extending from its surface. The shock bump is asymmetrical about a plane of asymmetry, and the plane of asymmetry: passes through a centre (6) of the shock bump, is parallel with a principal direction of air flow over the structure, and extends at a right angle to the surface of the structure. | ||||||
| 222 | BLUFF BODY NOISE CONTROL | US12734334 | 2008-10-23 | US20100288876A1 | 2010-11-18 | Leung Choi Chow; Matthew Spiteri; Xin Zhang; David Angland; Michael Goodyer |
| An aircraft noise-reduction apparatus comprise a flow-facing element (1) and a flow control device (2) positioned downstream of the flow-facing element (1). The flow control device (2) is arranged, in use, to reduce noise induced by unsteady flow downstream of the flow-facing element (1). | ||||||
| 223 | Design of viscoelastic coatings to reduce turbulent friction drag | US11054719 | 2005-02-10 | USRE41398E1 | 2010-06-29 | Carol L. May; Gennadiy A. Voropayev |
| A method is provided to select appropriate material properties for turbulent friction drag reduction, given a specific body configuration and freestream velocity. The method is based on a mathematical description of the balance of energy at the interface between the viscoelastic surface and the moving fluid, and permits determination of the interaction of turbulent boundary layer fluctuations with a viscoelastic layer by solving two subtasks—i.e., a hydrodynamic problem and an elasticity problem, which are coupled by absorption and compliancy coefficients. Displacement, velocity, and energy transfer boundary conditions on a viscoelastic surface are determined, and a Reynolds stress type turbulence model is modified to account for redistribution of turbulent energy in the near-wall region of the boundary layer. The invention permits drag reduction by a coating with specified density, thickness, and complex shear modulus to be predicted for a given body geometry and freestream velocity. For practical applications, viscoelastic coatings may be combined with additional structure, including underlying wedges to minimize edge effects for coatings of finite length, and surface riblets, for stabilization of longitudinal vortices. | ||||||
| 224 | Conformal aero-adaptive nozzle/aftbody | US11226033 | 2005-09-14 | US07686256B2 | 2010-03-30 | Daniel N. Miller; David D. Young |
| The present invention provides flow field control techniques that adapt the aft body region flow field to eliminate or mitigate the development of massive separated flow field zones and associated unsteady vortical flow field structures. Embodiments of the present invention use one or more distributed arrays of flow control devices (submerged in the boundary layer) to create disturbances in the flow field that inhibit the growth of larger vortical structures and/or to energize the aft body shear layer to keep the shear layer attached the aft body surface. These undesirable aerodynamic phenomena produce increased vehicle drag which harms vehicle range, persistence, and loiter capabilities. Additionally, the unsteady nature of the turbulent vortical structures shed in the aft body wake region may produce increased dynamic buffeting and aft body heating by entraining nozzle jet exhaust (a.k.a. jet wash) —requiring additional structural support, shielding, and vehicle weight. | ||||||
| 225 | Boundary layer propulsion airship with related system and method | US12068667 | 2008-02-08 | US20090200416A1 | 2009-08-13 | Yee-Chun Lee |
| Systems, method, devices and apparatus are provided for reducing drag and increasing the flight efficiency characteristics of aircraft and airships including hybrid aircraft utilizing distributed boundary layer control and propulsion means. Boundary layer control includes passive systems such as riblet films and boundary layer propulsion means includes a divided and distributed propulsion system disposed in the curved aft sections of aircraft and airships including hybrid aircraft susceptible to boundary layer drag due to degree of curvatures, speed and density of the surrounding air. Distributed propulsion propulsion means includes constructing propellers and riblets from shape memory alloys, piezoelectric materials and electroactive polymer (EAP) materials to change the shape and length of the distributed propulsion means. | ||||||
| 226 | Device to reduce the lateral force generated by aerial refueling boom cross-section | US11893107 | 2007-08-14 | US20080308679A1 | 2008-12-18 | Luis Pablo Ruiz Calavera; Francisco Javier Mariscal Sanchez |
| Device to reduce the lateral force generated by an aerial refueling boom (11) of an aircraft characterized in that it comprises at least one plate (31), said plate (31) comprising two cantilevered wings (32, 33), said wings (32, 33) comprising perforations (34), so that the wake produced in the boom (11) has a lower dynamic pressure than that of the free stream. | ||||||
| 227 | Deflection device for a stream body | US11183475 | 2005-07-18 | US20080142640A9 | 2008-06-19 | Damien Lejeau; Petra Aumann; Detlev Schwetzler |
| The present application describes to a deflection device, for example, for a blunt stream body. The deflection device has an edge, which, for example, can be mounted to the stream body. In an advantageous manner, the deflection device allows an influencing of the slipstream in such a way that turbulences, which are connected with the slipstream and form downstream of blunt stream bodies, have as little influence as possible on the dragged object in order to avoid the formation of building-up motions of the dragged object, which lead to instabilities. | ||||||
| 228 | Airflow control devices with planar surfaces | US11436314 | 2006-05-18 | US07147271B2 | 2006-12-12 | Jan H. Aase; Alan L. Browne; Nancy L. Johnson; John C. Ulicny |
| An airflow control device comprises a body and an active material in operative communication with the body. The active material, such as a shape memory material, is operative to change at least one attribute in response to an activation signal. The active material can change its shape, dimensions and/or stiffness producing a change in at least one feature of the airflow control device such as shape, dimension, location, orientation, and/or stiffness to control vehicle airflow to better suit changes in driving conditions such as the need for increased airflow through the radiator due to increases in engine coolant temperature. As such, the device improves vehicle fuel economy while maintaining proper engine cooling. An activation device, controller and sensors may be employed to further control the change in at least one feature of the airflow control device such as shape, dimension, location, orientation, and/or stiffness of the device. A method for controlling vehicle airflow selectively introduces an activation signal to initiate a change of at least one feature of the device that can be reversed upon discontinuation of the activation signal. | ||||||
| 229 | Landing gear assembly | US10552097 | 2004-04-07 | US20060243856A1 | 2006-11-02 | Leung Chow; Christopher Wood |
| An aircraft landing gear (9) includes a wheel (1) having a wheel rim (3) on which a tyre (4) is held. The gap (6) between the rim (3) and tyre (4) is bridged and covered by a sealing element (7), which thereby presents a smooth surface to the air flowing over the wheel during flight of the aircraft (8). Thus, noise that would otherwise be generated by the interaction of air and the parts of the wheel (1) and/or tyre (4) defining the gap (6) is reduced. Such noise reduction benefits may also be achieved by providing a tyre (4) and wheel (1) so shaped that there is no gap (6) between the tyre (4) and wheel rim (3). | ||||||
| 230 | Conformal aero-adaptive nozzle/aftbody | US11226033 | 2005-09-14 | US20060219847A1 | 2006-10-05 | Daniel Miller; David Young |
| The present invention provides flow field control techniques that adapt the aft body region flow field to eliminate or mitigate the development of massive separated flow field zones and associated unsteady vortical flow field structures. Embodiments of the present invention use one or more distributed arrays of flow control devices (submerged in the boundary layer) to create disturbances in the flow field that inhibit the growth of larger vortical structures and/or to energize the aft body shear layer to keep the shear layer attached the aft body surface. These undesirable aerodynamic phenomena produce increased vehicle drag which harms vehicle range, persistence, and loiter capabilities. Additionally, the unsteady nature of the turbulent vortical structures shed in the aft body wake region may produce increased dynamic buffeting and aft body heating by entraining nozzle jet exhaust (a.k.a. jet wash)—requiring additional structural support, shielding, and vehicle weight. | ||||||
| 231 | Airflow control devices based on active materials | US11436314 | 2006-05-18 | US20060214469A1 | 2006-09-28 | Jan Aase; Alan Browne; Nancy Johnson; John Ulicny |
| An airflow control device comprises a body and an active material in operative communication with the body. The active material, such as a shape memory material, is operative to change at least one attribute in response to an activation signal. The active material can change its shape, dimensions and/or stiffness producing a change in at least one feature of the airflow control device such as shape, dimension, location, orientation, and/or stiffness to control vehicle airflow to better suit changes in driving conditions such as the need for increased airflow through the radiator due to increases in engine coolant temperature. As such, the device improves vehicle fuel economy while maintaining proper engine cooling. An activation device, controller and sensors may be employed to further control the change in at least one feature of the airflow control device such as shape, dimension, location, orientation, and/or stiffness of the device. A method for controlling vehicle airflow selectively introduces an activation signal to initiate a change of at least one feature of the device that can be reversed upon discontinuation of the activation signal. | ||||||
| 232 | Airflow control devices based on active materials | US11436315 | 2006-05-18 | US20060202508A1 | 2006-09-14 | Jan Aase; Alan Browne; Nancy Johnson; John Ulicny |
| An airflow control device comprises a body and an active material in operative communication with the body. The active material, such as a shape memory material, is operative to change at least one attribute in response to an activation signal. The active material can change its shape, dimensions and/or stiffness producing a change in at least one feature of the airflow control device such as shape, dimension, location, orientation, and/or stiffness to control vehicle airflow to better suit changes in driving conditions such as the need for increased airflow through the radiator due to increases in engine coolant temperature. As such, the device improves vehicle fuel economy while maintaining proper engine cooling. An activation device, controller and sensors may be employed to further control the change in at least one feature of the airflow control device such as shape, dimension, location, orientation, and/or stiffness of the device. A method for controlling vehicle airflow selectively introduces an activation signal to initiate a change of at least one feature of the device that can be reversed upon discontinuation of the activation signal. | ||||||
| 233 | Airflow control devices based on active materials | US10872327 | 2004-06-18 | US07059664B2 | 2006-06-13 | Jan H. Aase; Alan L. Browne; Nancy L. Johnson; John C. Ulicny |
| An airflow control device comprises a body and an active material in operative communication with the body. The active material, such as a shape memory material, is operative to change at least one attribute in response to an activation signal. The active material can change its shape, dimensions and/or stiffness producing a change in at least one feature of the airflow control device such as shape, dimension, location, orientation, and/or stiffness to control vehicle airflow to better suit changes in driving conditions such as the need for increased airflow through the radiator due to increases in engine coolant temperature. As such, the device improves vehicle fuel economy while maintaining proper engine cooling. An activation device, controller and sensors may be employed to further control the change in at least one feature of the airflow control device such as shape, dimension, location, orientation, and/or stiffness of the device. A method for controlling vehicle airflow selectively introduces an activation signal to initiate a change of at least one feature of the device that can be reversed upon discontinuation of the activation signal. | ||||||
| 234 | Airflow control devices based on active materials | US10983330 | 2004-11-05 | US06991280B2 | 2006-01-31 | Geoffrey P. McKnight; Cameron Massey; Guillermo A. Herrera; William Barvosa-Carter; Nancy L. Johnson; Alan L. Browne |
| An airflow control device comprises a body and an active material in operative communication with the body. The active material, such as shape memory material, is operative to change at least one attribute in response to an activation signal. The active material can change its shape, dimensions and/or stiffness producing a change in at least one feature of the airflow control device such as shape, dimension, location, orientation, and/or stiffness to control vehicle airflow to better suit changes in driving conditions such as weather, ground clearance and speed, while reducing maintenance and the level of failure modes. As such, the device reduces vehicle damage due to inadequate ground clearance, while increasing vehicle stability and fuel economy. An activation device, controller and sensors may be employed to further control the change in at least one feature of the airflow control device such as shape, dimension, location, orientation, and/or stiffness of the device. A method for controlling vehicle airflow selectively introduces an activation signal to initiate a change of at least one feature of the device that can be reversed upon discontinuation of the activation signal. | ||||||
| 235 | Airflow control devices based on active materials | US10983330 | 2004-11-05 | US20050121946A1 | 2005-06-09 | Geoffrey McKnight; Cameron Massey; Guillermo Herrera; William Barvosa-Carter; Nancy Johnson; Alan Browne |
| An airflow control device comprises a body and an active material in operative communication with the body. The active material, such as shape memory material, is operative to change at least one attribute in response to an activation signal. The active material can change its shape, dimensions and/or stiffness producing a change in at least one feature of the airflow control device such as shape, dimension, location, orientation, and/or stiffness to control vehicle airflow to better suit changes in driving conditions such as weather, ground clearance and speed, while reducing maintenance and the level of failure modes. As such, the device reduces vehicle damage due to inadequate ground clearance, while increasing vehicle stability and fuel economy. An activation device, controller and sensors may be employed to further control the change in at least one feature of the airflow control device such as shape, dimension, location, orientation, and/or stiffness of the device. A method for controlling vehicle airflow selectively introduces an activation signal to initiate a change of at least one feature of the device that can be reversed upon discontinuation of the activation signal. | ||||||
| 236 | Airflow control devices based on active materials | US10872327 | 2004-06-18 | US20050121240A1 | 2005-06-09 | Jan Aase; Alan Browne; Nancy Johnson; John Ulicny |
| An airflow control device comprises a body and an active material in operative communication with the body. The active material, such as a shape memory material, is operative to change at least one attribute in response to an activation signal. The active material can change its shape, dimensions and/or stiffness producing a change in at least one feature of the airflow control device such as shape, dimension, location, orientation, and/or stiffness to control vehicle airflow to better suit changes in driving conditions such as the need for increased airflow through the radiator due to increases in engine coolant temperature. As such, the device improves vehicle fuel economy while maintaining proper engine cooling. An activation device, controller and sensors may be employed to further control the change in at least one feature of the airflow control device such as shape, dimension, location, orientation, and/or stiffness of the device. A method for controlling vehicle airflow selectively introduces an activation signal to initiate a change of at least one feature of the device that can be reversed upon discontinuation of the activation signal. | ||||||
| 237 | Method for generating surface plasma | US10061408 | 2002-01-31 | US06570333B1 | 2003-05-27 | Paul A. Miller; Ben P. Aragon |
| A method for generating a discharge plasma which covers a surface of a body in a gas at pressures from 0.01 Torr to atmospheric pressure, by applying a radio frequency power with frequencies between approximately 1 MHz and 10 GHz across a plurality of paired insulated conductors on the surface. At these frequencies, an arc-less, non-filamentary plasma can be generated to affect the drag characteristics of vehicles moving through the gas. The plasma can also be used as a source in plasma reactors for chemical reaction operations. | ||||||
| 238 | Design of viscoelastic coatings to reduce turbulent friction drag | US09546380 | 2000-04-10 | US06516652B1 | 2003-02-11 | Carol L. May; Gennadiy A. Voropayev |
| A method is provided to select appropriate material properties for turbulent friction drag reduction, given a specific body configuration and freestream velocity. The method is based on a mathematical description of the balance of energy at the interface between the viscoelastic surface and the moving fluid, and permits determination of the interaction of turbulent boundary layer fluctuations with a viscoelastic layer by solving two subtasks—i.e., a hydrodynamic problem and an elasticity problem, which are coupled by absorption and compliancy coefficients. Displacement, velocity, and energy transfer boundary conditions on a viscoelastic surface are determined, and a Reynolds stress type turbulence model is modified to account for redistribution of turbulent energy in the near-wall of the boundary layer. The invention permits drag reduction by a coating with specified density, thickness, and complex shear modulus to be predicted for a given body geometry and freestream velocity. For practical applications, viscoelastic coatings may be combined with additional structure, including underlying wedges to minimize edge effects for coatings of finite length, and surface riblets, for stabilization of longitudinal vortices. | ||||||
| 239 | Modification of fluid flow about bodies and surfaces through virtual aero-shaping of airfoils with synthetic jet actuators | US10094194 | 2002-03-08 | US20020190165A1 | 2002-12-19 | Ari Glezer; Michael Amitay |
| The present invention involves a system for altering the aerodynamic shape and/or fluid flow about a solid body. The preferred embodiment comprises an obstruction disposed on the solid body and extending outwardly from the solid body into the fluid flowing over the solid body and a synthetic jet actuator embedded in the solid body such that said fluid flowing over the solid body encounters the obstruction before the synthetic jet actuator. The synthetic jet actuator includes a jet housing defined by walls, the jet housing having an internal chamber with a volume of fluid and an opening in the jet housing connecting the chamber to an external environment having the fluid, and a volume changing means for periodically changing the volume within the internal chamber so that a series of fluid vortices are generated and projected in the external environment out from the opening of the jet housing. A synthetic jet stream is formed by the fluid vortices entraining the fluid of the external environment and is projected outwardly from the solid body. The fluid flowing over the solid body contacts the synthetic jet stream forming a recirculation region, thereby modifying both the flow field and the pressure distribution and similarly modifying both the lift and drag characteristics of the solid body. | ||||||
| 240 | Aircraft air conditioner energy recovery method | US09643369 | 2000-08-22 | US06289665B1 | 2001-09-18 | Manuel Munoz Saiz |
| The device involves the placement of an air pump turbine and the aircraft outflow valve in a duct through which all the air flows, with the turbine shaft attached to that of an electric generator, to a hydraulic pump, and to the N2 and accessory gearbox inside the engine, the air is also sent through a duct to strike inclined against the tips of the fan blades and against the tips of the first stage of the low speed compressor blades of the turbine engine. | ||||||
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