US20040155146A1 - Method of controlling a landing guide path of an aircraft - Google Patents
Method of controlling a landing guide path of an aircraft Download PDFInfo
- Publication number
- US20040155146A1 US20040155146A1 US10/713,160 US71316003A US2004155146A1 US 20040155146 A1 US20040155146 A1 US 20040155146A1 US 71316003 A US71316003 A US 71316003A US 2004155146 A1 US2004155146 A1 US 2004155146A1
- Authority
- US
- United States
- Prior art keywords
- aircraft
- rotating
- pivotable
- control
- wing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C9/00—Adjustable control surfaces or members, e.g. rudders
- B64C9/32—Air braking surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C23/00—Influencing air flow over aircraft surfaces, not otherwise provided for
- B64C23/06—Influencing air flow over aircraft surfaces, not otherwise provided for by generating vortices
- B64C23/065—Influencing air flow over aircraft surfaces, not otherwise provided for by generating vortices at the wing tips
- B64C23/069—Influencing air flow over aircraft surfaces, not otherwise provided for by generating vortices at the wing tips using one or more wing tip airfoil devices, e.g. winglets, splines, wing tip fences or raked wingtips
- B64C23/076—Influencing air flow over aircraft surfaces, not otherwise provided for by generating vortices at the wing tips using one or more wing tip airfoil devices, e.g. winglets, splines, wing tip fences or raked wingtips the wing tip airfoil devices comprising one or more separate moveable members thereon affecting the vortices, e.g. flaps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C9/00—Adjustable control surfaces or members, e.g. rudders
- B64C9/32—Air braking surfaces
- B64C9/323—Air braking surfaces associated with wings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/10—Drag reduction
Definitions
- the invention relates to an arrangement of control elements and an associated method for controlling the landing approach of an aircraft by a controlled descent along a glide path.
- This landing process is initiated already at a considerable distance and time out from the destination airport, by a controlled descent on the so-called glide path or glide slope. Since the gliding descent along the glide path takes up a substantial amount of the total time of the overall landing process, reducing the time required for this gliding descent will have a substantial impact on shortening the overall time required for the landing process, thereby reducing the total landing and take-off cycle time, and increasing the landing capacity per hour of the airport.
- the descent of the aircraft along the glide path or glide slope is controlled by the relationship of lift and drag of the aircraft.
- the coefficient of lift of the aircraft is dependent on the angle of attack or incidence of the aircraft as well as the incident flow velocity of the relative wind with respect to the aircraft.
- Modem conventional aircraft use their typical control surfaces or control elements, such as flaps, rudder, spoilers, etc. and adjustments of the propulsion engine thrust, to control the descent of the aircraft along the glide path.
- these conventional control elements can only achieve a variation of the lift and of the aerodynamic drag in a mutually coupled manner. In other words, any adjustment of the conventional control elements will simultaneously influence both the total lift and the total drag of the aircraft.
- a device for controlling the landing approach of an aircraft including a respective pivotable control element arranged respectively at the outboard wingtip of each wing of the aircraft.
- These pivotable control elements can be selectively pivoted to deflected positions, whereby the coefficient of lift of the aircraft is not influenced (i.e. remains essentially constant with no practically significant change), the coefficient of drag of the aircraft is altered, and the aerodynamic drag or flow resistance of the aircraft is increased. As a result, the glide path angle is made steeper, i.e. increased relative to the horizontal plane.
- each pivotable control element is pivotally connected to a fixed plane or surface member, which in turn is rigidly connected to or a part of an aerodynamic component that is secured to the respective wingtip.
- the aerodynamic component may, for example, be embodied as a wingtip fence or a winglet, which is additionally provided with the pivotable control element.
- the pivot axis preferably extends perpendicularly to the major plane of the wing or parallel to the yaw axis of the aircraft.
- the pivotal deflection of the inventive control elements achieves a fine adjustment that is superimposed on the basic aerodynamic configuration of the aircraft that is set by the control adjustments of the general control surfaces or control elements such as the flaps, spoilers, engine thrust adjustment, etc. Furthermore, by carrying out rapid fluctuating deflections with a time varying deflection angle or magnitude of the pivotable control elements, a rapid collapse of the wingtip vortices can be achieved.
- the invention By making the gliding descent of the aircraft steeper and faster over a shorter horizontal distance along the glide path, the invention reduces the total time required for a landing process, and thereby increases the take-off and landing cycle time and throughput capacity of the airport. Moreover, the invention makes it possible to carry out a finely adjustable drag control of the aircraft with a large bandwidth or large range of control, while being essentially independent of the lift and other moments of the aircraft. The inventive control further makes it possible to reduce the flight noise of the aircraft, especially in the landing configuration.
- the inventive pivotable control elements can be retrofitted onto previously existing aerodynamically effective components on the wingtips of an aircraft, having various forms and sizes, such as winglets, wingtip fences, or the like, for example.
- the inventive control elements can be readily adapted to the optimized wingtip element configurations required for cruise flight and/or a take-off configuration, in connection with various structural embodiments of the wingtip fences, winglets, or the like.
- the inventive pivotable control elements can be moved or pivoted in various different conventionally known ways using any conventionally known mechanisms, for example, by means of hydraulic, mechanical, electromechanical, or other actuators.
- the aerodynamic effect of the inventive control elements can be determined by model tests and measurements in a wind tunnel, whereby the determined test data can be used as the basis for integrating the inventive control elements into the overall flight control system of the aircraft.
- the pivoting deflection of the inventive control elements can be readily controlled from the general flight control system of the aircraft, e.g. including a flight control computer.
- the movable control elements can be controlled in a symmetrical and synchronized manner to achieve the above described glide path control without any yaw effect, but alternatively can be deflected independently and/or asymmetrically on the two sides of the aircraft so as to achieve a yaw control.
- This effect is especially advantageous in emergency situations such as an emergency descent of the aircraft and/or in the event of an engine failure, to support and supplement the other conventional control devices for maintaining the yaw control of the aircraft.
- Appropriate actuation of the inventive pivotable control elements contributes to a rapid collapse of the trailing vortices of the wingtips of the aircraft. This is especially advantageous because then a shorter spacing (in time and distance) may be maintained between a respective aircraft taking off or landing and the next successive aircraft that can take-off or land, in view of the rapid collapse of the trailing vortices of the preceding aircraft. Thereby, a further increase of the take-off and landing rate can be achieved.
- FIG. 1 is a schematic perspective view of a first embodiment of an aerodynamic component including an inventive pivotable control element, to be mounted on the wingtip of an aircraft wing;
- FIG. 2 is a schematic side view of the device according to FIG. 1;
- FIG. 3 is a schematic top plan view of a second embodiment of an aerodynamic component incorporating a pivotable control element according to the invention.
- FIG. 4 is a schematic top plan view of an exemplary aircraft equipped with the inventive aerodynamic components on the wingtips thereof.
- an aerodynamic component 1 is generally surfacially extending and aerodynamically contoured and is adapted to be connected to each respective outboard wingtip of a wing 17 of an aircraft 15 , as generally shown in FIG. 4.
- the aerodynamic component 1 includes a main plane body 1 A that is rigid and adapted to be fixed to the wingtip of the aircraft wing 17 with the main plane body 1 A extending aerodynamically smoothly and continuously from the wingtip of the aircraft wing 17 and along the major plane of the wing 17 (e.g. the plane extending along both the leading edge and the trailing edge of the wing 17 ).
- the aerodynamic component 1 further comprises a control surface member 2 that also has a generally surfacially extending or planar and aerodynamically contoured configuration.
- the control surface member 2 is connected and smoothly transitions to the main plane body 1 A.
- the plane of the control surface member 2 stands at a relatively steep angle (e.g. greater than 70°) and preferably perpendicularly relative to the plane of the main plane body 1 A.
- the control surface member 2 extends along a plane that is parallel to the longitudinal axis and orthogonal to the pitch axis of the aircraft.
- control surface member 2 has an elevation shape that generally comprises a delta or whale-tail shape, preferably with a further sweptback wing-like or fin-like portion that protrudes rearwardly from the delta-shaped portion.
- the control surface member 2 may generally be configured as a so-called wingtip fence or a winglet, or any other conventionally known aerodynamic structure to be arranged on the wingtip of an aircraft wing.
- FIGS. 1 and 2 To facilitate the mounting and connection of the aerodynamic component 1 on the wingtip of the aircraft wing, the particular embodiment shown in FIGS. 1 and 2, which has been tested in wind tunnel measurements, has a side wall or edge 4 that extends substantially vertically and perpendicularly relative to the upper and lower outer surfaces 3 of the aerodynamic component 1 , with a groove-shaped recess 5 let into this side wall 4 to reach into the main plane body 1 A of the aerodynamic component 1 .
- the recess 5 is adapted to receive the surfacially shaped wingtip or a suitably shaped portion of the wingtip, of an aircraft wing 17 .
- throughholes 6 are provided in the main plane body 1 A, such that threaded bolts or the like (not shown) can be insert through the throughholes 6 so as to mechanically secure the aerodynamic component 1 to the wingtip inserted in the recess 5 .
- the control surface member 2 comprises two surface portions or plane members 2 A and 2 B, namely a fixed plane member 2 A and a movable or pivotable plane member 2 B, which represents the pivotable control element 2 B according to the invention.
- the pivotable plane member or control element 2 B is pivotably connected to the fixed plane member 2 A by means of a pivot hinge or pivot joint 2 C, that provides a pivot axis 7 .
- the fixed plane member 2 A is rigidly and fixedly secured to the main plane body 1 A of the aerodynamic component 1 , which is rigidly and fixedly secured to the wingtip as described above.
- control element 2 B can be selectively deflected, either outboard or inboard, in an infinitely adjustable stepless manner, or in preselectable steps, to a maximum deflection angle ⁇ >0°.
- the maximum angular deflection, as well as any selectable deflection steps in the angular range, are determined by wind tunnel measurements for a given application.
- FIG. 3 shows a second example embodiment of an aerodynamic component 8 according to the invention.
- This aerodynamic component 8 generally corresponds to the above described aerodynamic component 1 , except for the following differences.
- the fixed plane member 2 A extends rearwardly only to the pivot joint or hinge 2 C, while the pivotable plane member 2 B extends forwardly only up to the pivot hinge 2 C.
- a fixed plane member 10 A extends rearwardly from the pivot joint or hinge 10 C adjacently along a pivotable plane member 10 B.
- the overall control surface member 10 is “split” along its longitudinal vertical center plane, to include the fixed plane member 10 A and the pivotable plane member 10 B extending adjacently along one another.
- the pivotable plane member or control element 10 B is connected to the fixed plane member 10 A along the pivot hinge 10 C providing a pivot axis 11 allowing the pivotable plane member to pivot by the angle ⁇ .
- the fixed plane member 10 A is the inboard member located closer to the wingtip
- the pivotable plane member 10 B is the outboard member located farther away from the wingtip, and being outwardly pivotable about the pivot axis 11 by the variable or selectable deflection angle ⁇ .
- the deflection angle can be infinitely continuously adjustable, or adjustable to preselected steps, whereby these deflection angles are determined by wind tunnel tests, for example.
- the pivot axes 7 and 11 are preferably perpendicular to the major plane of the wing or parallel to the yaw axis of the aircraft.
- the pivotable control elements 2 B, 10 B can be actuated independently of the other control surfaces of the aircraft, such as the spoilers, flaps, and the like, used for setting the basic landing configuration.
- the respective pivotable control element 10 B may be pivotally deflected outwardly away from the aircraft, while the pivotable control element 2 B may be pivoted selectively either outwardly away from the aircraft or inwardly toward the aircraft, whereby the deflection of the control element 2 B, 10 B on the right wingtip is carried out symmetrically and in unison with the deflection of the corresponding control element 2 B, 10 B on the left wingtip for achieving a fine adjustment of the drag without inducing any yaw effect.
- This is the control situation used for steepening the landing approach glide.
- the left and right control elements 2 B, 10 B can be independently actuated by the aircraft flight control system, to purposely influence the yaw attitude of the aircraft in special situations.
- FIG. 4 schematically shows the inventive aerodynamic components 1 respectively mounted on the outboard wingtips of the two wings 17 extending outwardly from the opposite sides of the fuselage 16 of the aircraft 15 .
- the aircraft 15 further includes engines 18 , as well as flaps 19 and spoilers 20 provided on the wings 17 , whereby the control settings of these components establish the basic setting of the lift and drag for the landing glide configuration.
- the fine adjustment of the drag achieved by the pivotal deflection of the inventive control elements 2 B is superimposed on the basic setting of the landing glide configuration.
- a flight controller 21 including a flight control computer of the aircraft 15 is connected to provide control signals to actuators 22 that pivotally deflect the control elements 2 B responsive to the control signals provided by the flight controller 21 .
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Traffic Control Systems (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
A method of controlling a landing guide path of an aircraft and a method of steeping a landing guide path of an aircraft include rotating a portion of an aerodynamic component to increase a drag without influencing a lift. A method of controlling a landing guide path of an aircraft including an aerodynamic component having a main portion and a control portion, the main portion connected to a wing of the aircraft, and the control portion including a fixed member connected to a pivotable member. The method includes rotating the pivotable member to increase a drag without influencing a lift.
Description
- This application claims priority under 35 U.S.C. §119 to German Patent Application 101 60 315.0, filed on Dec. 7, 2001, and under 35 U.S.C. §120 to U.S. patent application Ser. No. 10/313,052, filed on Dec. 6, 2002, the disclosures of which are incorporated by reference herein in their entirety.
- 1. FIELD OF THE INVENTION
- The invention relates to an arrangement of control elements and an associated method for controlling the landing approach of an aircraft by a controlled descent along a glide path.
- 2. DISCUSSION OF THE RELATED ART
- A sharp increase in air traffic in recent years has led to a high utilization and partially an overloading of the air traffic capacity of many airports. Without expanding the physical runway facilities and the like of existing airports, or building new airports, a further increase in capacity can only be achieved by reducing the time required for the take-off and landing of each aircraft. Reducing the time required for the take-off of an aircraft basically requires an increase in the power of the aircraft, and is thus complicated and costly. Reducing the overall time required for the landing of an aircraft must consider that the landing process includes several phases, for example the gliding approach and descent along a glide path, flaring from the glide path to an essentially level final landing path, and finally floating or settling out to the touch down point, and then rolling out and braking along the runway. This landing process is initiated already at a considerable distance and time out from the destination airport, by a controlled descent on the so-called glide path or glide slope. Since the gliding descent along the glide path takes up a substantial amount of the total time of the overall landing process, reducing the time required for this gliding descent will have a substantial impact on shortening the overall time required for the landing process, thereby reducing the total landing and take-off cycle time, and increasing the landing capacity per hour of the airport.
- The descent of the aircraft along the glide path or glide slope is controlled by the relationship of lift and drag of the aircraft. In this context, the coefficient of lift of the aircraft is dependent on the angle of attack or incidence of the aircraft as well as the incident flow velocity of the relative wind with respect to the aircraft. Modem conventional aircraft use their typical control surfaces or control elements, such as flaps, rudder, spoilers, etc. and adjustments of the propulsion engine thrust, to control the descent of the aircraft along the glide path. Unfortunately, these conventional control elements can only achieve a variation of the lift and of the aerodynamic drag in a mutually coupled manner. In other words, any adjustment of the conventional control elements will simultaneously influence both the total lift and the total drag of the aircraft. This means that an intended change of the glide path slope for a given angle of attack of the aircraft by means of a drag variation (e.g. by extending the flaps or deflecting the spoilers) will simultaneously cause a change of the lift. The resulting compound effects of any control adjustment are thus rather complex, and consequently require rather complex systems for controlling the adjustments of the control elements, and substantially limit the possibility of any further reductions in the time or distance required for the landing approach of the aircraft.
- In view of the above, it is an object of the invention to provide a device and a method for improving the control of a landing approach of an aircraft, and particularly for reducing the time and distance required for the descent and landing phase of the flight of an aircraft by achieving a steeper glide path. The invention further aims to avoid or overcome the disadvantages of the prior art, and to achieve additional advantages as apparent from the present specification. The attainment of these objects is, however, not a required limitation of the invention.
- The above objects have been achieved according to the invention in a device for controlling the landing approach of an aircraft, including a respective pivotable control element arranged respectively at the outboard wingtip of each wing of the aircraft. These pivotable control elements can be selectively pivoted to deflected positions, whereby the coefficient of lift of the aircraft is not influenced (i.e. remains essentially constant with no practically significant change), the coefficient of drag of the aircraft is altered, and the aerodynamic drag or flow resistance of the aircraft is increased. As a result, the glide path angle is made steeper, i.e. increased relative to the horizontal plane. Preferably, each pivotable control element is pivotally connected to a fixed plane or surface member, which in turn is rigidly connected to or a part of an aerodynamic component that is secured to the respective wingtip. The aerodynamic component may, for example, be embodied as a wingtip fence or a winglet, which is additionally provided with the pivotable control element. The pivot axis preferably extends perpendicularly to the major plane of the wing or parallel to the yaw axis of the aircraft.
- The above objects have further been achieved according to the invention in a method of operating the inventive device, whereby the respective pivotable control elements on the wingtips of the two wings of the aircraft are pivotally deflected, mirror symmetrically in unison, so as to increase the total coefficient of drag, without exerting a net yaw influence on the aircraft and without influencing the total coefficient of lift. Thus, the pivotal deflection of the inventive control elements simply introduces an increased drag to the overall aerodynamic configuration of the aircraft, which thereby achieves a faster descent along a steeper glide path in a simply and finely controllable manner. Particularly, the pivotal deflection of the inventive control elements achieves a fine adjustment that is superimposed on the basic aerodynamic configuration of the aircraft that is set by the control adjustments of the general control surfaces or control elements such as the flaps, spoilers, engine thrust adjustment, etc. Furthermore, by carrying out rapid fluctuating deflections with a time varying deflection angle or magnitude of the pivotable control elements, a rapid collapse of the wingtip vortices can be achieved.
- By making the gliding descent of the aircraft steeper and faster over a shorter horizontal distance along the glide path, the invention reduces the total time required for a landing process, and thereby increases the take-off and landing cycle time and throughput capacity of the airport. Moreover, the invention makes it possible to carry out a finely adjustable drag control of the aircraft with a large bandwidth or large range of control, while being essentially independent of the lift and other moments of the aircraft. The inventive control further makes it possible to reduce the flight noise of the aircraft, especially in the landing configuration.
- It is especially advantageous according to the invention, that the inventive pivotable control elements can be retrofitted onto previously existing aerodynamically effective components on the wingtips of an aircraft, having various forms and sizes, such as winglets, wingtip fences, or the like, for example. The inventive control elements can be readily adapted to the optimized wingtip element configurations required for cruise flight and/or a take-off configuration, in connection with various structural embodiments of the wingtip fences, winglets, or the like. Moreover, the inventive pivotable control elements can be moved or pivoted in various different conventionally known ways using any conventionally known mechanisms, for example, by means of hydraulic, mechanical, electromechanical, or other actuators.
- The aerodynamic effect of the inventive control elements can be determined by model tests and measurements in a wind tunnel, whereby the determined test data can be used as the basis for integrating the inventive control elements into the overall flight control system of the aircraft. In other words, by providing the appropriate data that associates the control element deflection with the resulting aerodynamic effect thereof, the pivoting deflection of the inventive control elements can be readily controlled from the general flight control system of the aircraft, e.g. including a flight control computer. It is further advantageous, that the movable control elements can be controlled in a symmetrical and synchronized manner to achieve the above described glide path control without any yaw effect, but alternatively can be deflected independently and/or asymmetrically on the two sides of the aircraft so as to achieve a yaw control. This effect is especially advantageous in emergency situations such as an emergency descent of the aircraft and/or in the event of an engine failure, to support and supplement the other conventional control devices for maintaining the yaw control of the aircraft.
- Appropriate actuation of the inventive pivotable control elements contributes to a rapid collapse of the trailing vortices of the wingtips of the aircraft. This is especially advantageous because then a shorter spacing (in time and distance) may be maintained between a respective aircraft taking off or landing and the next successive aircraft that can take-off or land, in view of the rapid collapse of the trailing vortices of the preceding aircraft. Thereby, a further increase of the take-off and landing rate can be achieved.
- In order that the invention may be clearly understood, it will now be described in connection with example embodiments thereof, with reference to the accompanying drawings, wherein:
- FIG. 1 is a schematic perspective view of a first embodiment of an aerodynamic component including an inventive pivotable control element, to be mounted on the wingtip of an aircraft wing;
- FIG. 2 is a schematic side view of the device according to FIG. 1;
- FIG. 3 is a schematic top plan view of a second embodiment of an aerodynamic component incorporating a pivotable control element according to the invention; and
- FIG. 4 is a schematic top plan view of an exemplary aircraft equipped with the inventive aerodynamic components on the wingtips thereof.
- As shown in FIG. 1, an
aerodynamic component 1 according to the invention is generally surfacially extending and aerodynamically contoured and is adapted to be connected to each respective outboard wingtip of awing 17 of anaircraft 15, as generally shown in FIG. 4. Theaerodynamic component 1 includes amain plane body 1A that is rigid and adapted to be fixed to the wingtip of theaircraft wing 17 with themain plane body 1A extending aerodynamically smoothly and continuously from the wingtip of theaircraft wing 17 and along the major plane of the wing 17 (e.g. the plane extending along both the leading edge and the trailing edge of the wing 17). - The
aerodynamic component 1 further comprises a control surface member 2 that also has a generally surfacially extending or planar and aerodynamically contoured configuration. The control surface member 2 is connected and smoothly transitions to themain plane body 1A. Preferably, the plane of the control surface member 2 stands at a relatively steep angle (e.g. greater than 70°) and preferably perpendicularly relative to the plane of themain plane body 1A. Thus, the control surface member 2 extends along a plane that is parallel to the longitudinal axis and orthogonal to the pitch axis of the aircraft. - As can be seen in the perspective view of FIG. 1, and especially in the side view of FIG. 2, the control surface member2 has an elevation shape that generally comprises a delta or whale-tail shape, preferably with a further sweptback wing-like or fin-like portion that protrudes rearwardly from the delta-shaped portion. The control surface member 2 may generally be configured as a so-called wingtip fence or a winglet, or any other conventionally known aerodynamic structure to be arranged on the wingtip of an aircraft wing.
- To facilitate the mounting and connection of the
aerodynamic component 1 on the wingtip of the aircraft wing, the particular embodiment shown in FIGS. 1 and 2, which has been tested in wind tunnel measurements, has a side wall oredge 4 that extends substantially vertically and perpendicularly relative to the upper and lowerouter surfaces 3 of theaerodynamic component 1, with a groove-shaped recess 5 let into thisside wall 4 to reach into themain plane body 1A of theaerodynamic component 1. Therecess 5 is adapted to receive the surfacially shaped wingtip or a suitably shaped portion of the wingtip, of anaircraft wing 17. Furthermore, throughholes 6 are provided in themain plane body 1A, such that threaded bolts or the like (not shown) can be insert through thethroughholes 6 so as to mechanically secure theaerodynamic component 1 to the wingtip inserted in therecess 5. These features are merely exemplary, and can be readily adapted to various different configurations and forms of mechanical connection, as needed in any particular application, for mounting and securely fastening theaerodynamic component 1 on the wingtip of any givenaircraft wing 17. - As shown particularly in the side view of FIG. 2, the control surface member2 comprises two surface portions or
plane members 2A and 2B, namely a fixedplane member 2A and a movable or pivotable plane member 2B, which represents the pivotable control element 2B according to the invention. The pivotable plane member or control element 2B is pivotably connected to the fixedplane member 2A by means of a pivot hinge or pivot joint 2C, that provides a pivot axis 7. In turn, the fixedplane member 2A is rigidly and fixedly secured to themain plane body 1A of theaerodynamic component 1, which is rigidly and fixedly secured to the wingtip as described above. - Not shown in the drawings are the actuator, linkage, and other mechanisms by which the pivotable plane member or control element2B can be selectively pivotably deflected about the pivot axis 7 relative to the fixed
plane member 2A. Any conventionally known actuators and linkages may be used in this regard, and may, for example, be housed internally within theaerodynamic component 1, or in theaircraft wing 17 itself, with merely an actuating linkage extending from thewing 17 into theaerodynamic component 1 for actuating the pivotable plane member or control element 2B. In a neutral non-deflected position extending parallel to the plane of the fixedplane member 2A, the pivotable plane member or control element 2B has a deflection angle δ=0°. From this neutral position, the control element 2B can be selectively deflected, either outboard or inboard, in an infinitely adjustable stepless manner, or in preselectable steps, to a maximum deflection angle δ>0°. Particularly, the maximum angular deflection, as well as any selectable deflection steps in the angular range, are determined by wind tunnel measurements for a given application. - FIG. 3 shows a second example embodiment of an
aerodynamic component 8 according to the invention. Thisaerodynamic component 8 generally corresponds to the above describedaerodynamic component 1, except for the following differences. In the embodiment of FIG. 2, the fixedplane member 2A extends rearwardly only to the pivot joint or hinge 2C, while the pivotable plane member 2B extends forwardly only up to thepivot hinge 2C. In contrast, in the embodiment of FIG. 3, a fixed plane member 10A extends rearwardly from the pivot joint or hinge 10C adjacently along a pivotable plane member 10B. Namely, the overall control surface member 10 is “split” along its longitudinal vertical center plane, to include the fixed plane member 10A and the pivotable plane member 10B extending adjacently along one another. The pivotable plane member or control element 10B is connected to the fixed plane member 10A along the pivot hinge 10C providing a pivot axis 11 allowing the pivotable plane member to pivot by the angle δ. In this embodiment, the fixed plane member 10A is the inboard member located closer to the wingtip, while the pivotable plane member 10B is the outboard member located farther away from the wingtip, and being outwardly pivotable about the pivot axis 11 by the variable or selectable deflection angle δ. As mentioned above in connection with FIGS. 1 and 2, the deflection angle can be infinitely continuously adjustable, or adjustable to preselected steps, whereby these deflection angles are determined by wind tunnel tests, for example. - To ensure that the aerodynamic effect of the deflection of the pivotable plane members2B or 10B essentially only influences the overall coefficient of drag without significantly influencing the overall coefficient of lift of the
aircraft 15, the pivot axes 7 and 11 are preferably perpendicular to the major plane of the wing or parallel to the yaw axis of the aircraft. Also, the pivotable control elements 2B, 10B can be actuated independently of the other control surfaces of the aircraft, such as the spoilers, flaps, and the like, used for setting the basic landing configuration. - The respective pivotable control element10B may be pivotally deflected outwardly away from the aircraft, while the pivotable control element 2B may be pivoted selectively either outwardly away from the aircraft or inwardly toward the aircraft, whereby the deflection of the control element 2B, 10B on the right wingtip is carried out symmetrically and in unison with the deflection of the corresponding control element 2B, 10B on the left wingtip for achieving a fine adjustment of the drag without inducing any yaw effect. This is the control situation used for steepening the landing approach glide. Alternatively, the left and right control elements 2B, 10B can be independently actuated by the aircraft flight control system, to purposely influence the yaw attitude of the aircraft in special situations.
- FIG. 4 schematically shows the inventive
aerodynamic components 1 respectively mounted on the outboard wingtips of the twowings 17 extending outwardly from the opposite sides of thefuselage 16 of theaircraft 15. Theaircraft 15 further includesengines 18, as well asflaps 19 andspoilers 20 provided on thewings 17, whereby the control settings of these components establish the basic setting of the lift and drag for the landing glide configuration. The fine adjustment of the drag achieved by the pivotal deflection of the inventive control elements 2B is superimposed on the basic setting of the landing glide configuration. Aflight controller 21 including a flight control computer of theaircraft 15 is connected to provide control signals toactuators 22 that pivotally deflect the control elements 2B responsive to the control signals provided by theflight controller 21. - Although the invention has been described with reference to specific example embodiments, it will be appreciated that it is intended to cover all modifications and equivalents within the scope of the appended claims. It should also be understood that the present disclosure includes all possible combinations of any individual features recited in any of the appended claims.
Claims (16)
1. Method of controlling a landing guide path of an aircraft, comprising:
rotating a portion of an aerodynamic component to increase a drag without influencing a lift.
2. The method according to claim 1 , wherein the aerodynamic component comprise a main body configured to be connected to a wing and a control member connected to the main body, and rotating comprises rotating a portion of the control member.
3. The method according to claim 2 , wherein the control member comprises a fixed member connected to the main body and a pivotable member connected to the fixed member, and rotating comprises rotating the pivotable member.
4. The method according to claim 3 , wherein the control member further comprises a hinge member disposed between the fixed member and the pivotable member, and rotating comprises rotating the pivotable member relative to the fixed member via the hinge member.
5. The method according to claim 4 , wherein the pivotable member comprises a delta shape.
6. The method according to claim 4 , wherein rotating comprises rotating the pivotable member about an axis perpendicular to a major plane of the wing.
7. The method according to claim 4 , wherein rotating comprises rotating the pivotable member at least one of inwardly and outwardly.
8. The method according to claim 4 , wherein rotating comprises rotating the pivotable member both of inwardly and outwardly.
9. Method of steepening a landing guide path of an aircraft, comprising:
rotating a portion of an aerodynamic component to increase a drag without influencing a lift.
10. The method according to claim 9 , wherein the aerodynamic component comprise a main body configured to be connected to a wing and a control member connected to the main body, and rotating comprises rotating a portion of the control member.
11. The method according to claim 10 , wherein the control member comprises a fixed member connected to the main body and a pivotable member connected to the fixed member, and rotating comprises rotating the pivotable member.
12. The method according to claim 11 , wherein the control member further comprises a hinge member disposed between the fixed member and the pivotable member, and rotating comprises rotating the pivotable member relative to the fixed member via the hinge member.
13. Method of controlling a landing guide path of an aircraft including an aerodynamic component having a main portion and a control portion, the main portion connected to a wing of the aircraft, and the control portion including a fixed member connected to a pivotable member, the method comprising:
rotating the pivotable member to increase a drag without influencing a lift.
14. The method according to claim 13 , wherein rotating comprises rotating the pivotable member perpendicular to a major plane of the wing.
15. The method according to claim 14 , wherein rotating comprises rotating the pivotable member in at least one of inwardly and outwardly.
16. The method according to claim 15 , wherein rotating comprises rotating the pivotable member both inwardly and outwardly.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/713,160 US20040155146A1 (en) | 2001-12-07 | 2003-11-17 | Method of controlling a landing guide path of an aircraft |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10160315A DE10160315A1 (en) | 2001-12-07 | 2001-12-07 | Device for the approach control of an aircraft |
DE10160315.0 | 2001-12-07 | ||
US10/313,052 US7316371B2 (en) | 2001-12-07 | 2002-12-06 | Method and device for steepening a landing approach of an aircraft |
US10/713,160 US20040155146A1 (en) | 2001-12-07 | 2003-11-17 | Method of controlling a landing guide path of an aircraft |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/313,052 Division US7316371B2 (en) | 2001-12-07 | 2002-12-06 | Method and device for steepening a landing approach of an aircraft |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040155146A1 true US20040155146A1 (en) | 2004-08-12 |
Family
ID=7708488
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/313,052 Expired - Lifetime US7316371B2 (en) | 2001-12-07 | 2002-12-06 | Method and device for steepening a landing approach of an aircraft |
US10/713,160 Abandoned US20040155146A1 (en) | 2001-12-07 | 2003-11-17 | Method of controlling a landing guide path of an aircraft |
US10/713,161 Expired - Lifetime US7070148B2 (en) | 2001-12-07 | 2003-11-17 | Aerodynamic component for controlling a landing guide path of an aircraft |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/313,052 Expired - Lifetime US7316371B2 (en) | 2001-12-07 | 2002-12-06 | Method and device for steepening a landing approach of an aircraft |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/713,161 Expired - Lifetime US7070148B2 (en) | 2001-12-07 | 2003-11-17 | Aerodynamic component for controlling a landing guide path of an aircraft |
Country Status (2)
Country | Link |
---|---|
US (3) | US7316371B2 (en) |
DE (1) | DE10160315A1 (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040169110A1 (en) * | 2001-12-07 | 2004-09-02 | Susanne Wyrembek | Aerodynamic component for controlling a landing guide path of an aircraft |
GB2444742A (en) * | 2006-12-11 | 2008-06-18 | Embraer Aeronautica Sa | Aircraft flight decent control system |
US20090039204A1 (en) * | 2007-08-09 | 2009-02-12 | The Boeing Company | Wingtip Feathers, Including Forward Swept Feathers, and Associated Aircraft Systems and Methods |
US20090084904A1 (en) * | 2007-10-02 | 2009-04-02 | The Boeing Company | Wingtip Feathers, Including Paired, Fixed Feathers, and Associated Systems and Methods |
US20090256029A1 (en) * | 2008-04-15 | 2009-10-15 | The Boeing Company | Winglets with Recessed Surfaces, and Associated Systems and Methods |
US20110024556A1 (en) * | 2009-08-03 | 2011-02-03 | Airbus Operations (S.A.S) | Aircraft with yaw control by differential drag |
US8936219B2 (en) | 2012-03-30 | 2015-01-20 | The Boeing Company | Performance-enhancing winglet system and method |
RU2588173C1 (en) * | 2015-06-02 | 2016-06-27 | Акционерное общество "Московский институт электромеханики и автоматики" (АО "МИЭА") | Method for automatic control of longitudinal movement of aircraft landing |
US9511850B2 (en) | 2014-04-12 | 2016-12-06 | The Boeing Company | Wing tip device for an aircraft wing |
US20220073193A1 (en) * | 2010-07-14 | 2022-03-10 | Airbus Operations Limited | Wing tip device |
US20230227149A1 (en) * | 2013-12-04 | 2023-07-20 | Tamarack Aerospace Group, Inc. | Adjustable lift modification wingtip |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2003280422A1 (en) * | 2002-06-26 | 2004-01-19 | Peter T. Mccarthy | High efficiency tip vortex reversal and induced drag reduction |
DE10302514B4 (en) | 2003-01-23 | 2008-12-18 | Eads Deutschland Gmbh | Fluid-mechanically effective surface of a moving in a fluid device, in particular an aircraft, in particular wing of an aircraft |
US7475848B2 (en) * | 2003-11-11 | 2009-01-13 | Morgenstern John M | Wing employing leading edge flaps and winglets to achieve improved aerodynamic performance |
US7234667B1 (en) * | 2003-12-11 | 2007-06-26 | Talmage Jr Robert N | Modular aerospace plane |
CA2568848C (en) * | 2004-07-16 | 2013-06-25 | Airbus France | Method and device for improving maneuverability of an aircraft during approach phases before landing followed by flare-out |
FR2873094B1 (en) * | 2004-07-16 | 2008-01-18 | Airbus France Sas | METHOD AND DEVICE FOR IMPROVING THE MANEUVERABILITY OF AN AIRCRAFT AT APPROACH PHASES BEFORE LANDING AND ROUND |
US9302766B2 (en) | 2008-06-20 | 2016-04-05 | Aviation Partners, Inc. | Split blended winglet |
US9381999B2 (en) | 2008-06-20 | 2016-07-05 | C. R. Bard, Inc. | Wing tip with optimum loading |
EP2423773B1 (en) * | 2010-08-24 | 2014-06-25 | The Boeing Company | Four-dimensional guidance of an aircraft |
EP3650337B1 (en) | 2011-06-09 | 2020-11-25 | Aviation Partners, Inc. | The split blended winglet |
US9452825B2 (en) | 2013-04-19 | 2016-09-27 | The Boeing Company | Winglet attach fitting for attaching a split winglet to a wing |
US9738375B2 (en) * | 2013-12-05 | 2017-08-22 | The Boeing Company | One-piece composite bifurcated winglet |
CN103995465B (en) * | 2014-04-17 | 2017-04-19 | 中国航空工业集团公司沈阳飞机设计研究所 | Transverse lateral guidance law design method |
US11001378B2 (en) | 2016-08-08 | 2021-05-11 | Jetoptera, Inc. | Configuration for vertical take-off and landing system for aerial vehicles |
US10464668B2 (en) | 2015-09-02 | 2019-11-05 | Jetoptera, Inc. | Configuration for vertical take-off and landing system for aerial vehicles |
CN108137150B (en) | 2015-09-02 | 2021-07-06 | 杰托普特拉股份有限公司 | Fluid propulsion system |
US20170253322A1 (en) * | 2016-03-02 | 2017-09-07 | Google Inc. | Split Winglet Lateral Control |
EP3269635A1 (en) * | 2016-07-12 | 2018-01-17 | The Aircraft Performance Company UG | Airplane wing |
JP7155174B2 (en) | 2017-06-27 | 2022-10-18 | ジェトプテラ、インコーポレイテッド | Aircraft vertical take-off and landing system configuration |
ES2905192T3 (en) * | 2018-01-15 | 2022-04-07 | The Aircraft Performance Company Gmbh | airplane wing |
GB2576929A (en) * | 2018-09-07 | 2020-03-11 | Airbus Operations Ltd | A wing tip device |
CN113955125B (en) * | 2021-11-18 | 2023-12-19 | 杜同 | Safety lifesaving system for aircraft |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1987050A (en) * | 1933-02-23 | 1935-01-08 | Burnelli Aircraft Ltd | Tailless airplane |
US2480040A (en) * | 1943-12-06 | 1949-08-23 | Wilbur A E Mitchell | Aircraft control surfaces |
US4457479A (en) * | 1982-02-15 | 1984-07-03 | Martine Daude | Winglets for aircraft wing tips |
US4714215A (en) * | 1983-04-15 | 1987-12-22 | British Aerospace Plc | Aircraft wing and winglet arrangement |
US4784353A (en) * | 1983-03-02 | 1988-11-15 | The Boeing Company | Aircrafts tail section drag compensating for nose-down pitching moment |
US5542625A (en) * | 1993-03-26 | 1996-08-06 | Grumman Aerospace Corporation | Gull wing aircraft |
US6076767A (en) * | 1996-09-18 | 2000-06-20 | Dowty Boulton Paul Limited | Flight control surface actuation system |
US20030106961A1 (en) * | 2001-12-07 | 2003-06-12 | Susanne Wyrembek | Method and device for steepening a landing approach of an aircraft |
Family Cites Families (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1914000A (en) * | 1931-08-18 | 1933-06-13 | Boeing Co | Control flap and balance |
US2194596A (en) * | 1936-04-24 | 1940-03-26 | Henter Mathias | Airplane |
US2158598A (en) * | 1937-11-30 | 1939-05-16 | Glenn L Martin Co | Aircraft construction |
US2418301A (en) * | 1942-07-24 | 1947-04-01 | Miles Aircraft Ltd | Aircraft supporting surface |
FR921155A (en) * | 1945-10-31 | 1947-04-29 | Orientable warping and steering flanges for aerodyne | |
US2649265A (en) * | 1948-07-30 | 1953-08-18 | Charles H Grant | Airplane with stabilizing fins |
US2553642A (en) * | 1948-08-26 | 1951-05-22 | Curtiss Wright Corp | Aerodynamic brake and automatic control system for aircraft |
US2697568A (en) * | 1949-02-02 | 1954-12-21 | Cons Vultee Aircraft Corp | Aircraft rudder control |
US2880575A (en) * | 1952-11-28 | 1959-04-07 | Curtiss Wright Corp | Combined variable area nozzle and aerodynamic brake |
US2816724A (en) * | 1954-12-06 | 1957-12-17 | Sperry Rand Corp | Constant lift flight path controller |
US2846165A (en) * | 1956-06-25 | 1958-08-05 | John A Axelson | Aircraft control system |
US3270988A (en) | 1962-12-26 | 1966-09-06 | Jr Clarence D Cone | Minimum induced drag airfoil body |
GB1151431A (en) * | 1966-06-10 | 1969-05-07 | Nat Res Dev | Improvements in or relating to Aircraft Wings |
US3438597A (en) * | 1967-04-03 | 1969-04-15 | Witold A Kasper | Aircraft |
DE2149956C3 (en) | 1971-10-07 | 1974-03-28 | Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen | High lift wing |
US3831885A (en) * | 1972-07-11 | 1974-08-27 | W Kasper | Aircraft wing with vortex generation |
US4042197A (en) * | 1975-09-29 | 1977-08-16 | The Boeing Company | Automatic controls for airplane take-off and landing modes |
US4172574A (en) | 1976-06-16 | 1979-10-30 | National Research Development Corporation | Fluid stream deflecting members for aircraft bodies or the like |
GB1584348A (en) | 1976-06-16 | 1981-02-11 | Nat Res Dev | Devices to reduce drag |
US4598885A (en) | 1979-03-05 | 1986-07-08 | Waitzman Simon V | Airplane airframe |
GB2051706A (en) | 1979-06-19 | 1981-01-21 | British Aerospace | Aircraft wings |
US4466586A (en) * | 1980-03-10 | 1984-08-21 | The Boeing Company | Directional control device for aircraft |
US4477042A (en) | 1981-01-19 | 1984-10-16 | Griswold Ii Roger W | Vortex alleviating wing tip |
DE3242584A1 (en) | 1982-11-18 | 1984-05-24 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | ARRANGEMENT OF ADDITIONAL SURFACES AT THE TIPS OF AN WING |
US4554543A (en) * | 1983-03-08 | 1985-11-19 | The United States Of America As Represented By The Secretary Of The Air Force | Glide slope indicator system |
US4595160A (en) | 1983-05-18 | 1986-06-17 | Jonathan Santos | Wing tip airfoils |
US4702441A (en) | 1984-12-31 | 1987-10-27 | The Boeing Company | Aircraft wing stall control device and method |
DE3621800A1 (en) | 1986-06-28 | 1988-01-07 | Riedelsheimer Hans Joachim | PLANE |
JPH01285492A (en) | 1988-05-12 | 1989-11-16 | Mitsubishi Heavy Ind Ltd | Wing tip vortex cancel blade |
US5060889A (en) * | 1989-05-01 | 1991-10-29 | The Boeing Company | Apparatus and methods for maintaining aircraft track angle during an asymmetric flight condition |
US5156358A (en) * | 1991-04-11 | 1992-10-20 | Northrop Corporation | Aircraft outboard control |
GB9107766D0 (en) * | 1991-04-12 | 1991-06-05 | Short Brothers Plc | A structural component |
US5702071A (en) * | 1995-06-07 | 1997-12-30 | Sundstrand Corporation | Deployable vortex turbine for dissipating or extracting energy from a lift induced vortex emanating from an aircraft |
GB9600123D0 (en) | 1996-01-04 | 1996-03-06 | Westland Helicopters | Aerofoil |
US6161797A (en) * | 1996-11-25 | 2000-12-19 | Dugan Air Technologies, Inc. | Method and apparatus for reducing airplane noise |
US5988563A (en) * | 1997-12-30 | 1999-11-23 | Mcdonnell Douglas Corporation | Articulating winglets |
DE19926832B4 (en) | 1999-06-12 | 2005-09-15 | Airbus Deutschland Gmbh | Subsonic aircraft preferably with swept-up wings |
US6497600B1 (en) * | 1999-10-05 | 2002-12-24 | Alejandro Velasco Levy | Automatic pilot system for model aircraft |
US6394397B1 (en) * | 2000-12-06 | 2002-05-28 | The Boeing Company | Lifting surface with active variable tip member and method for influencing lifting surface behavior therewith |
US6547181B1 (en) * | 2002-05-29 | 2003-04-15 | The Boeing Company | Ground effect wing having a variable sweep winglet |
-
2001
- 2001-12-07 DE DE10160315A patent/DE10160315A1/en not_active Withdrawn
-
2002
- 2002-12-06 US US10/313,052 patent/US7316371B2/en not_active Expired - Lifetime
-
2003
- 2003-11-17 US US10/713,160 patent/US20040155146A1/en not_active Abandoned
- 2003-11-17 US US10/713,161 patent/US7070148B2/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1987050A (en) * | 1933-02-23 | 1935-01-08 | Burnelli Aircraft Ltd | Tailless airplane |
US2480040A (en) * | 1943-12-06 | 1949-08-23 | Wilbur A E Mitchell | Aircraft control surfaces |
US4457479A (en) * | 1982-02-15 | 1984-07-03 | Martine Daude | Winglets for aircraft wing tips |
US4784353A (en) * | 1983-03-02 | 1988-11-15 | The Boeing Company | Aircrafts tail section drag compensating for nose-down pitching moment |
US4714215A (en) * | 1983-04-15 | 1987-12-22 | British Aerospace Plc | Aircraft wing and winglet arrangement |
US5542625A (en) * | 1993-03-26 | 1996-08-06 | Grumman Aerospace Corporation | Gull wing aircraft |
US6076767A (en) * | 1996-09-18 | 2000-06-20 | Dowty Boulton Paul Limited | Flight control surface actuation system |
US20030106961A1 (en) * | 2001-12-07 | 2003-06-12 | Susanne Wyrembek | Method and device for steepening a landing approach of an aircraft |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7070148B2 (en) * | 2001-12-07 | 2006-07-04 | Airbus Deutschland Gmbh | Aerodynamic component for controlling a landing guide path of an aircraft |
US7316371B2 (en) | 2001-12-07 | 2008-01-08 | Airbus Deutschland Gmbh | Method and device for steepening a landing approach of an aircraft |
US20040169110A1 (en) * | 2001-12-07 | 2004-09-02 | Susanne Wyrembek | Aerodynamic component for controlling a landing guide path of an aircraft |
GB2444742A (en) * | 2006-12-11 | 2008-06-18 | Embraer Aeronautica Sa | Aircraft flight decent control system |
US9405295B2 (en) | 2006-12-11 | 2016-08-02 | Embraer S.A. | Flight control system |
US20100217460A1 (en) * | 2006-12-11 | 2010-08-26 | Polati De Souza Alvaro Vitor | Flight control system |
GB2444742B (en) * | 2006-12-11 | 2011-06-08 | Embraer Aeronautica Sa | Flight Control System |
US7900876B2 (en) | 2007-08-09 | 2011-03-08 | The Boeing Company | Wingtip feathers, including forward swept feathers, and associated aircraft systems and methods |
US20090039204A1 (en) * | 2007-08-09 | 2009-02-12 | The Boeing Company | Wingtip Feathers, Including Forward Swept Feathers, and Associated Aircraft Systems and Methods |
US20090084904A1 (en) * | 2007-10-02 | 2009-04-02 | The Boeing Company | Wingtip Feathers, Including Paired, Fixed Feathers, and Associated Systems and Methods |
US8128035B2 (en) | 2008-04-15 | 2012-03-06 | The Boeing Company | Winglets with recessed surfaces, and associated systems and methods |
US20090256029A1 (en) * | 2008-04-15 | 2009-10-15 | The Boeing Company | Winglets with Recessed Surfaces, and Associated Systems and Methods |
CN102089207A (en) * | 2008-04-15 | 2011-06-08 | 波音公司 | Winglets with recessed surfaces, and associated systems and methods |
WO2009129023A1 (en) * | 2008-04-15 | 2009-10-22 | The Boeing Company | Winglets with recessed surfaces, and associated systems and methods |
US20110024556A1 (en) * | 2009-08-03 | 2011-02-03 | Airbus Operations (S.A.S) | Aircraft with yaw control by differential drag |
US8876044B2 (en) | 2009-08-03 | 2014-11-04 | Airbus Operations S.A.S. | Aircraft with yaw control by differential drag |
FR2948628A1 (en) * | 2009-08-03 | 2011-02-04 | Airbus Operations Sas | AIRPLANE WITH LACET CONTROL BY DIFFERENTIAL TRAINING |
US11851164B2 (en) * | 2010-07-14 | 2023-12-26 | Airbus Operations Limited | Wing tip device |
US20220073193A1 (en) * | 2010-07-14 | 2022-03-10 | Airbus Operations Limited | Wing tip device |
US9637226B2 (en) | 2012-03-30 | 2017-05-02 | The Boeing Company | Split winglet system |
US9463871B2 (en) | 2012-03-30 | 2016-10-11 | The Boeing Company | Winglet system having upper and lower winglet |
US9346537B2 (en) | 2012-03-30 | 2016-05-24 | The Boeing Company | Winglet system |
USD924119S1 (en) | 2012-03-30 | 2021-07-06 | The Boeing Company | Split winglet |
US9216817B1 (en) | 2012-03-30 | 2015-12-22 | The Boeing Company | Winglet system and method |
US8936219B2 (en) | 2012-03-30 | 2015-01-20 | The Boeing Company | Performance-enhancing winglet system and method |
US20230227149A1 (en) * | 2013-12-04 | 2023-07-20 | Tamarack Aerospace Group, Inc. | Adjustable lift modification wingtip |
US9511850B2 (en) | 2014-04-12 | 2016-12-06 | The Boeing Company | Wing tip device for an aircraft wing |
RU2588173C1 (en) * | 2015-06-02 | 2016-06-27 | Акционерное общество "Московский институт электромеханики и автоматики" (АО "МИЭА") | Method for automatic control of longitudinal movement of aircraft landing |
Also Published As
Publication number | Publication date |
---|---|
US7316371B2 (en) | 2008-01-08 |
US20030106961A1 (en) | 2003-06-12 |
DE10160315A1 (en) | 2003-11-13 |
US7070148B2 (en) | 2006-07-04 |
US20040169110A1 (en) | 2004-09-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7070148B2 (en) | Aerodynamic component for controlling a landing guide path of an aircraft | |
US11440645B2 (en) | Adjustable lift modification wingtip | |
US8651431B1 (en) | Aircraft with movable winglets and method of control | |
US6227487B1 (en) | Augmented wing tip drag flap | |
CA2315167C (en) | Improved aileron for fixed wing aircraft | |
US5927656A (en) | Wing leading edge flap and method therefor | |
US7475848B2 (en) | Wing employing leading edge flaps and winglets to achieve improved aerodynamic performance | |
US5039032A (en) | High taper wing tip extension | |
Spillman | The use of variable camber to reduce drag, weight and costs of transport aircraft | |
EP2193079B1 (en) | Oblique blended wing body aircraft | |
US8757538B2 (en) | Aircraft having a variable geometry | |
US4354646A (en) | Variable dihedral angle tail unit for supersonic aircraft | |
US5094411A (en) | Control configured vortex flaps | |
CN100500511C (en) | System and method for reducing airfoil vortices | |
US3415469A (en) | Airplane | |
US4132375A (en) | Vortex-lift roll-control device | |
US11084566B2 (en) | Passively actuated fluid foil | |
US20050116116A1 (en) | Wing employing leading edge flaps and winglets to achieve improved aerodynamic performance | |
US6935592B2 (en) | Aircraft lift device for low sonic boom | |
WO1995011159A1 (en) | Aircraft flight control system | |
Greff | The development and design integration of a variable camber wing for long/medium range aircraft | |
US5020740A (en) | Pitch control trimming system for canard design aircraft | |
EP0101644A2 (en) | Variable sweep forward wing aircraft | |
RU2060912C1 (en) | Method of improvement of aerodynamic characteristics of biplane wing | |
RU2561886C2 (en) | Vtol aircraft lift increasing device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AIRBUS DEUTSCHLAND GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WYREMBEK, SUSANNE;MAY, PETER;MUTHREICH, KLAUS;REEL/FRAME:015260/0709 Effective date: 20040123 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |