EP1917186A2 - Aeronef a volets montes sur le ventre - Google Patents

Aeronef a volets montes sur le ventre

Info

Publication number
EP1917186A2
EP1917186A2 EP06847453A EP06847453A EP1917186A2 EP 1917186 A2 EP1917186 A2 EP 1917186A2 EP 06847453 A EP06847453 A EP 06847453A EP 06847453 A EP06847453 A EP 06847453A EP 1917186 A2 EP1917186 A2 EP 1917186A2
Authority
EP
European Patent Office
Prior art keywords
wing
planar structure
blended
aircraft
body aircraft
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.)
Withdrawn
Application number
EP06847453A
Other languages
German (de)
English (en)
Inventor
Ron Blackwelder
Mark Page
Yann Staelens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Southern California USC
Original Assignee
University of Southern California USC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by University of Southern California USC filed Critical University of Southern California USC
Publication of EP1917186A2 publication Critical patent/EP1917186A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C9/00—Adjustable control surfaces or members, e.g. rudders
    • B64C9/02—Mounting or supporting thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/02—Undercarriages
    • B64C25/08—Undercarriages non-fixed, e.g. jettisonable
    • B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
    • B64C25/16—Fairings movable in conjunction with undercarriage elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C9/00—Adjustable control surfaces or members, e.g. rudders
    • B64C9/14—Adjustable control surfaces or members, e.g. rudders forming slots
    • B64C9/16—Adjustable control surfaces or members, e.g. rudders forming slots at the rear of the wing
    • B64C9/18—Adjustable control surfaces or members, e.g. rudders forming slots at the rear of the wing by single 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
    • 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
    • B64C9/326—Air braking surfaces associated with fuselages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C9/00—Adjustable control surfaces or members, e.g. rudders
    • B64C9/34—Adjustable control surfaces or members, e.g. rudders collapsing or retracting against or within other surfaces or other members
    • B64C9/36—Adjustable control surfaces or members, e.g. rudders collapsing or retracting against or within other surfaces or other members the members being fuselages or nacelles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/001—Devices not provided for in the groups B64C25/02 - B64C25/68
    • B64C2025/003—Means for reducing landing gear noise, or turbulent flow around it, e.g. landing gear doors used as deflectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C39/00—Aircraft not otherwise provided for
    • B64C39/10—All-wing aircraft
    • B64C2039/105—All-wing aircraft of blended wing body type

Definitions

  • This application relates to aircraft, including aircraft that utilize a blended wing body.
  • Some aircraft have what is known as a Wended wing body. These are usually tailless aircraft in which persons, payloads, and/or cargo are held within the wing itself.
  • Blended wing body aircraft often have less effective pitching moment controls.
  • the pitch controls of such aircraft often have a shorter lever arm from the control surface to the center of gravity than a conventional tailed airplane.
  • Their instantaneous center of percussion is therefore located closer to their centers of gravity, as compared to conventional aircrafts. This may cause the instantaneous center of rotation to be further ahead of the center of gravity.
  • more force must often be asserted on the blended wing body aircraft in order to obtain an equivalent change in pitch, since the moment arm is smaller. This can introduce larger lift losses and cause the blended wing body aircraft to plunge downward in order to reach a higher prtch angle.
  • the pilot may command a nose up pitch to elevate the flight path.
  • the initial flight path sagging that may be caused by the short-coupled controls may be in opposition to the pilot's intent.
  • a blended wing body aircraft may include a blended wing configured to house a person, payload and/or cargo within the wing, a surface structure, and an actuator.
  • the actuator may be configured to controllably cause the planar structure to extend downwardly from an underside surface of the wing with a hinge line of the planar surface oriented such that the planar structure forms a sweep angle with respect to the perpendicular to the aircraft's centerline between -70 degrees and +70 degrees, which in some embodiments may be between -10 and 50 degrees.
  • Substantially each point on the planar structure may be behind a leading edge of the wing and in front of a trailing edge of the wing by at least 5% of the length of the chord of the wing that passes through the point.
  • the blended wing body aircraft may include one or more additional surface structures, each associated with an actuator that is configured to controllably cause each additional planar structure to extend downwardly from the underside surface of the wing. All of the planar structures may form a substantially continuous surface that has a centerline that substantially coincides with the centerline of the aircraft. The total span of the planar structures may be between 10 and 100 percent of the span of the wing.
  • the actuator may be configured to controllably cause the planar structure to form a deployment angle with a trailing portion of the underside surface of the wing that is between 10 and 170 degrees.
  • the sweep angle of the planar structure may be between -70 degrees to +70 degrees with most applications being between -10 and the sweep angle of the wings.
  • Substantially every one of the points on the planar structure may be located behind the leading edge of the wing by at least 20% and in front of the trailing edge of the wing by at least 35% of the length of the chord of the wing that passes through the point.
  • the actuator may be configured to controllably retract the planar structure from its downwardly extending position until the planar structure is substantially flush with the underside surface of the wing.
  • the wing may include a landing gear well and the actuator may be configured to retract the planar structure into a position covering or within the landing gear well.
  • the planar structure may have a substantially rectangular or trapezoidal shape and/or a lower edge that is curved and/or serrated.
  • the surface structure may have a surface comprised of rigid, semi-rigid or flexible material.
  • the material may enable the surface to deform in response to aerodynamic pressures.
  • the surface may take on a parachute-like configuration.
  • the surface may be made of any material, such as fabric, screen, another type of flexible membrane, or plastic.
  • the surface may be continuous and supported on a rigid or non-rigid means of retention, such as a frame.
  • the geometry of this membrane may have a substantially rectangular or trapezoidal shape and/or a lower edge that is curved and/or serrated.
  • the membrane may have perforations.
  • the actuator may be configured to controllably cause the planar structure to extend with an orientation that causes an increase in static pressure ahead of the aircraft's center of gravity and a decrease aft during forward movement of the aircraft, as compared to when the planar structure is not extended, thereby producing a nose-up pitching moment.
  • the actuator may be configured to controllably cause all planar structures to extend so as to increase the aircraft's nose up control pitching moment by more than 5 percent and, in certain embodiments, with no material loss of lift, as compared to when the planar structures are not extended.
  • the actuator may be configured to controllabiy cause the planar structures to extend so as to increase the aircraft's lift by more than 5 percent with no material loss of pitching moment as compared to when the planar structures are not extended.
  • a process for taking off or landing an aircraft having a wing and a surface structure may include extending the planar structure downwardly from an underside surface of the wing and taking off and/or landing the aircraft.
  • the planar structure may be retracted after takeoff and/or landing.
  • One or more of the features and/or steps that have been described may be used in connection with a conventional aircraft that has a tail and a fuselage configured to house persons, payloads and/or cargo.
  • FIG. 1 is a side view of a blended wing body aircraft with an extended belly flap having substantially no sweep.
  • FIG. 2 is a front view of the blended wing body aircraft shown in FIG. 1.
  • FIG. 3 is a top view of the blended wing body aircraft shown in FIG. 1 but with a sweep added to the belly flaps.
  • FIG. 4 is a side view of the blended wing body aircraft shown in FIG. 1 with the belly flaps retracted.
  • FIG. 5(a) illustrates a belly flap in a retracted position covering a landing gear well.
  • FIG. 5(b) illustrates the belly flap of FIG. 5(b) in an extended position with the landing gear also extended.
  • FIGS. 6(a)-(d) illustrate variations in the shapes of belly flaps.
  • FIGS. 7(a)-(d) illustrate various patterns of porous openings in belly flaps.
  • FIGS. 8(a)-(d) illustrate variations in the lower edges on belly flaps.
  • the side edges may be similarly configured.
  • FIGS. 9(a)-(b) illustrate particular patterns of porous openings that utilize slot configurations next to the hinge and in the interior of the planar surface.
  • FIGS. 10(a) and (b) illustrate extensions of the belly flaps used to control the air flow under and around the flap. This embodiment may be employed near the landing gear (above) or removed from the landing gear (below).
  • FlG. 1 is a side view of a blended wing body aircraft with an extended belly flap having substantially no sweep.
  • FIG. 2 is a front view of the blended wing body aircraft shown in FIG. 1.
  • FIG. 3 is a top view of a blended wing body aircraft with belly flaps, but with a sweep angle, ⁇ added to the belly flaps.
  • a blended wing body aircraft 101 may include a wing that is configured to house one or more persons, payload, and/or cargo within the interior of the wing.
  • the aircraft may have no tail and may be powered by one or more propellers, jets, rockets, and/or by any other means.
  • the aircraft may instead be without a means of propulsion.
  • the actual shape and configuration of the blended wing body aircraft may vary widely.
  • the aircraft shown in FIGS. 1-3 is just an example.
  • One or more surface structures may extend downwardly from an underside surface 109 of the wing.
  • Each surface structure may be substantially planar. Flaps, such as flaps 103, 105, and 107, are examples. Each of the flaps 103, 105, and 107 may cooperate when extended downwardly to form a substantially continuous or discontinuous surface. The center line of the continuous or discontinuous surface may substantially coincide with the center line of the aircraft.
  • Each of the flaps 103, 105, and 107 may vary widely in their configuration and orientation. Examples will now be discussed.
  • each flap may be at a sweep angle ⁇ with respect to the perpendicular to the centerline of the aircraft (see FIG. 3) that is between - 70° and 70°.
  • the sweep angle ⁇ may fall within a narrower range, namely between -10° and the sweep angle ⁇ of the wing (see FIG. 3).
  • substantially each point on each flap When deployed, substantially each point on each flap may be behind a leading edge of the wing by at least 5% of the length of the chord of the wing that passes through the point. Similarly, substantially each point on each flap may be in front of a trailing edge of the wing by at least 5% of the length of this chord.
  • One such point is shown in FIG. 3. It is on the flap 103 and is labeled as a flap point 111.
  • the chord of the wing that passes through the flap point 111 is shown in FIG. 3 as extending between a leading point 113 on the leading edge of the wing and a trailing point 115 on the trailing edge of the wing.
  • the distance 112 between the leading point 113 and the flap point 111 and the distance 114 between the flap point 111 and the trailing point 115 may both be greater than 5% of the distance between the leading point 113 and the trailing point 115.
  • the range of positioning may be narrower. Specifically, substantially every one of the points on the planar structure may be
  • the distance 112 between the leading point 113 and the flap point 111 may be at least 20% of the distance between the leading point 113 and the trailing point 115, and the distance 114 between the flap point 111 and the trailing point 115 may be at least 35% of the distance between the leading point 113 and the trailing point 115.
  • the deployment angle ⁇ at which each planar structure is deployed may be between 10 and 170°. In other embodiments, the deployment angle may be within a narrower range, such as between 40 and 95°.
  • FIG. 4 is a side view of the blended wing body aircraft shown in FIG. 1 with the belly flaps 103, 105, and 107 retracted.
  • the belly flaps 103, 105, and 107 may be retracted so as to cause their exterior surfaces to be substantially flush with the underside surface 109 of the wing. Retractions to other positions relative to the underside surface 109 may be done instead.
  • each flap may vary. In one embodiment, the combined width of the flaps may span between 10 and 100 percent of the span of the wing. When the retracted position covers or causes the flap to be within a landing gear well (as discussed below), the combined width of the flaps may span between 2 and 20 percent of the span of the wing.
  • each flap When deployed in its extended position, each flap may cause an increase in the static pressure ahead of the hinge line 123 of the flap and a decrease in that static air pressure aft of the hinge line 123 of the flap during forward movement of the aircraft, as compared to when the flap is in a retracted position that is substantially flush with the underside surface 109 of the wing. This may produce a nose-up pitching moment about the center of gravity 121 of the aircraft.
  • the collective effect of the flaps may be to increase the control pitching moment of the aircraft by at least 5% as compared to the control pitching moment of the aircraft when the flaps are retracted substantially flush with the underside surface 109 of the wing.
  • FIG. 5 illustrates a belly flap in a retracted position covering a landing gear well.
  • a belly flap 501 may be in a retracted position that is substantially flush with an underside surface 503 of an aircraft. While in this retracted position, the belly flap 501 may substantially cover a landing gear well 505.
  • an actuator 507 within the landing gear well 505, there may be an actuator 507, at least one wheel 509, and various linkages, such as linkages 513, 515, and 517, that link the flap 501 and the wheel 509 with the actuator 507 and one or more wing anchors, such as wing anchors 519 and 521.
  • various linkages such as linkages 513, 515, and 517, that link the flap 501 and the wheel 509 with the actuator 507 and one or more wing anchors, such as wing anchors 519 and 521.
  • FIG. 5(b) illustrates the belly flap of FIG. 5(a) in a position extended from the landing gear well. As shown in FIG. 5(b), the belly flap 501 has been deployed in this extended position, along with the wheel 509.
  • the actuator 507 may be a hydraulically-driven piston.
  • the actuator 507 may be electrically-driven, using, for example, an electric motor and ball screw arrangement.
  • a hydraulic motor may be used in addition or instead.
  • One or more locking mechanisms (not shown) may be added to lock the belly flap 501 into its deployed position, that is, the position shown in FIG. 5(b).
  • the belly flap 501 need not be used as a cover for the landing gear well 505 while in its retracted position, as shown in FIG. 5(a). Instead, the belly flap 501 may be retracted within the landing gear well 505. In this embodiment, differently-configured linkages may be used to move the belly flap 501 between its deployed position as shown in FIG. 5(b) and retracted position within the landing gear well. In this embodiment, a different structure may be used to cover the landing gear well while the wheel 509 and the belly flap 501 are in their retracted position.
  • actuators and associated linkages that are shown in FIGS. 5 (a) and (b) and/or discussed above in connection with these figures may be used in connection with each of the belly flaps 103, 105, and 107 shown in FIGS. 1-4, or some or all of these belly flaps may use a different type of actuator and/or linkage.
  • FIGS. 6(a)-(d) illustrate variations in the shapes of belly flaps.
  • a substantially rectangular shape is illustrated in FIG. 6(a), trapezoidal shapes are illustrated in FIG. 6(a).
  • the belly flap(s) may have a different shape from any of those illustrated in FIG. 6. The shape may depend upon performance criteria that are desired from the belly flap and/or other criteria concerning the aircraft.
  • FIGS. 7(a)-(d) illustrate various patterns of porous openings in belly flaps.
  • a belly flap may include one or more porous openings at one or more locations. Whether the belly flap has any openings, the number of openings, the shape of the openings, and the position of the openings may again be dictated by performance criteria that is desired from the belly flap and/or other criteria concerning the aircraft.
  • FIGS. 8(a)-(d) illustrate variations in the lower edges on belly flaps.
  • a serrated edge is illustrated in FIG. 8(a)
  • a lower edge that is narrower than an upper edge is illustrated in FIG. 8(b)
  • an edge with scallops is illustrated in FIG. 8(d)
  • an edge that includes angled serrations and scallops is illustrated in FIG. 8(c).
  • the lower edges and side edges of the belly flaps may be similar to or different from any of those shown in FIG. 8.
  • the lower edges and side edges may similarly be configured to achieve desired performance criteria and/or to meet other criteria of the aircraft.
  • FIGS. 9(a)-(b) illustrate particular types of porous belly flaps 905 and 906 that utilize a slot type opening.
  • the belly flap 905 may be attached via a hinge 911 to the underside surface of the wing 909.
  • the belly flap 906 may similarly be attached. This may leave a slot 913 between the upper extremity of the belly flap and the wing's surface.
  • the belly flap 906 may leave multiple slots.
  • a slot 915 may be included in the interior of the belly flap, such as in the belly flap 906.
  • FIGS. 10(a) and (b) illustrate extensions of the belly flaps used to control the air flow under and around the flap.
  • This embodiment may be employed near the landing gear (above) or removed from the landing gear (below). They illustrate that, although the belly flaps may be primarily planar, extensions may be added to their extremities to control the air flow around the flaps.
  • belly flaps 1001 and 1003 may have an extension 1005 and 1007, respectively, under a belly 1009 and 1011 , respectively of a wing 1013 and 1015,
  • the belly flaps may be extended and retracted at any time during the use or maintenance of the aircraft.
  • the belly flaps may be extended and thus deployed during takeoff and/or landing, and retracted while the plane is in flight and, if not blocked by extended wheels, while taxiing on the runway and/or at rest on the ground.
  • the surface structures such as the belly flaps that have been described, may be used in connection with conventional aircraft, that is, aircraft that may be configured to contain persons, payloads, and/or cargo within a central fuselage, and that may have a tail.
  • the belly flaps When used with conventional aircraft, the belly flaps may still extend downwardly from an underside surface of the wing and may conform to one or more of the other criteria that have been described above in connection with aircraft having a blended wing body.
  • belly flaps have thus-far been illustrated in the drawings, other types of surface structures may be used instead.
  • the number of planar structures may be different than the three that have been illustrated.
  • a single surface may span both sides of the wing; one surface may instead be used under each side of the wing; and even multiple surfaces may instead be used under each side of the wing.
  • all of the surfaces need not be co-Sinear, particularly when they are at a sweep angle with respect to the aircraft. Even
  • the downwardly extending surface structures that have been discussed may have shapes other than substantially planar.
  • one or more of these surface structures may have a curved surface that is convex or concave relative to the direction of the wind.
  • a cross- section similar to the cross-section of a half pie is an example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

Aéronef de type aile volante, comportant une aile volante configurée pour abriter une personne, une charge utile et/ou une cargaison ; une structure plane et un actionneur. L'actionneur est configuré pour commander la structure plane de façon sélective de manière à ce qu'elle sorte d'une surface de dessous de l'aile volante en prenant une orientation telle qu'elle forme un angle de flèche compris entre -70 et 70 degrés par rapport à l'aéronef. Sensiblement chaque point de la structure plane se situe à l'arrière d'un bord d'attaque de l'aile et à l'avant d'un bord de fuite de l'aile d'une distance correspondant à au moins 5% de la longueur de la corde de l'aile passant par ce point. L'actionneur est configuré pour commander la structure plane de façon sélective de manière à ce qu'elle sorte d'une surface de dessous de l'aile volante en prenant une orientation qui provoque une augmentation de la pression statique à l'avant de l'axe d'articulation de la structure plane et une réduction de celle-ci à l'arrière de l'axe d'articulation au cours du mouvement vers l'avant de l'aéronef, par rapport à une configuration dans laquelle la structure plane n'est pas sortie. La sortie de toutes les structures planes accroît le moment de tangage de l'aéronef et/ou sa portance de plus de 5 pour cent par rapport à une configuration dans laquelle elles ne sont pas sorties.
EP06847453A 2005-07-27 2006-07-27 Aeronef a volets montes sur le ventre Withdrawn EP1917186A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US70291205P 2005-07-27 2005-07-27
PCT/US2006/029455 WO2007117260A2 (fr) 2005-07-27 2006-07-27 Aeronef a volets montes sur le ventre

Publications (1)

Publication Number Publication Date
EP1917186A2 true EP1917186A2 (fr) 2008-05-07

Family

ID=38581503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06847453A Withdrawn EP1917186A2 (fr) 2005-07-27 2006-07-27 Aeronef a volets montes sur le ventre

Country Status (2)

Country Link
EP (1) EP1917186A2 (fr)
WO (1) WO2007117260A2 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103786873A (zh) * 2013-10-25 2014-05-14 苏州艾锐泰克无人飞行器科技有限公司 无人机机身底扰流板
CN103803059A (zh) * 2013-10-25 2014-05-21 苏州艾锐泰克无人飞行器科技有限公司 无人机多扰流板侧翼
CN103803058A (zh) * 2013-10-25 2014-05-21 苏州艾锐泰克无人飞行器科技有限公司 无人机单扰流板侧翼
CN103803056A (zh) * 2013-10-25 2014-05-21 苏州艾锐泰克无人飞行器科技有限公司 无人机机身顶扰流板
CN103863556A (zh) * 2014-02-25 2014-06-18 李竟儒 一种预防飞机空中失控撞山冲海的装置
CA3007431A1 (fr) * 2015-12-09 2017-06-15 Bombardier Inc. Aeronef a aile volante
EP3587261B1 (fr) 2018-06-22 2021-04-14 Bombardier Inc. Aéronef à aile volante
CN108791815A (zh) * 2018-06-25 2018-11-13 李竟儒 一种防止飞机空中失控撞山冲海的装置
CN112722241B (zh) * 2021-02-02 2024-04-12 中国空气动力研究与发展中心空天技术研究所 一种可伸缩的腹部襟翼
FR3135447A1 (fr) * 2022-05-16 2023-11-17 Airbus Operations Ensemble de trappes pour une case de train avant d’aéronef comprenant des trappes avant pourvues de déflecteurs.
CN114906343A (zh) * 2022-07-18 2022-08-16 中国空气动力研究与发展中心空天技术研究所 一种适用于扁平融合体布局飞行器的腹部襟翼设计方法
GB2625544A (en) * 2022-12-19 2024-06-26 Airbus Operations Ltd Aircraft braking system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747817A (en) * 1953-08-11 1956-05-29 Saulnier Raymond Retractable landing gears
US4046338A (en) * 1975-10-14 1977-09-06 Kline Richard L Airfoil for aircraft having improved lift generating device
US6491261B1 (en) * 2000-04-17 2002-12-10 The United States Of America As Represented By The Secretary Of The Air Force Wing mounted aircraft yaw control device
US6568632B2 (en) * 2001-04-04 2003-05-27 The Boeing Company Variable size blended wing body aircraft

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007117260A3 *

Also Published As

Publication number Publication date
WO2007117260A2 (fr) 2007-10-18
WO2007117260A3 (fr) 2008-05-22

Similar Documents

Publication Publication Date Title
EP1917186A2 (fr) Aeronef a volets montes sur le ventre
JP7457175B2 (ja) 電動垂直離着陸（ｖｔｏｌ）機用の翼傾斜作動システム
US10538307B2 (en) Hinged raked wing tip
EP2727826B1 (fr) Ailette d'extrémité de voilure articulée
US9932107B2 (en) Enhancing aerodynamic performance of an aircraft wing assembly
US10144499B2 (en) Aerofoil accessories and method for modifying the geometry of a wing element
US8622350B1 (en) Compound leading edge device for aircraft
US20200055595A1 (en) Cruise efficient vertical and short take-off and landing aircraft
US7740205B1 (en) Auxiliary wing and flap assembly for an aircraft
US20120074264A1 (en) Airplane wing
US5495999A (en) Retractable canard wing surfaces for airplanes
RU2333868C2 (ru) Снабженный крыльями космический аппарат
US11084566B2 (en) Passively actuated fluid foil
US6935592B2 (en) Aircraft lift device for low sonic boom
US4093156A (en) Supersonic transport
EP4331973A1 (fr) Carénage pour extrémité d'aile pliable
US8141815B1 (en) Wing strut trailing edge device
EP3898411B1 (fr) Joints aérodynamiques pour réduire le bruit aérodynamique associé à des surfaces de commande d'hypersustention d'aéronef
US20190106197A1 (en) Variable-Chord Rotor Blade
EP3722208A1 (fr) Système hypersustentateur active pour véhicules aériens à décollage et atterrissage court (stol)
CN117125245A (zh) 用于飞行器的机翼组件和飞行器
IL194156A (en) Accessories for air surface

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080226

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

RIN1 Information on inventor provided before grant (corrected)

Inventor name: STAELENS, YANN

Inventor name: PAGE, MARK

Inventor name: BLACKWELDER, RON

R17D Deferred search report published (corrected)

Effective date: 20080522

RIC1 Information provided on ipc code assigned before grant

Ipc: B64C 25/10 20060101ALI20080703BHEP

Ipc: B64C 3/58 20060101ALI20080703BHEP

Ipc: B64C 1/00 20060101AFI20080703BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20100202