EP4367521A1 - Sonde d'incidence notamment pour un aéronef - Google Patents
Sonde d'incidence notamment pour un aéronefInfo
- Publication number
- EP4367521A1 EP4367521A1 EP22738489.8A EP22738489A EP4367521A1 EP 4367521 A1 EP4367521 A1 EP 4367521A1 EP 22738489 A EP22738489 A EP 22738489A EP 4367521 A1 EP4367521 A1 EP 4367521A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vane
- deflector
- angle
- sensor according
- flow
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D43/00—Arrangements or adaptations of instruments
- B64D43/02—Arrangements or adaptations of instruments for indicating aircraft speed or stalling conditions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
- G01P13/025—Indicating direction only, e.g. by weather vane indicating air data, i.e. flight variables of an aircraft, e.g. angle of attack, side slip, shear, yaw
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/02—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer
- G01P5/06—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer using rotation of vanes
Definitions
- TITLE Angle of attack probe, in particular for an aircraft
- the present invention relates to an angle of attack sensor, in particular for an aircraft.
- the invention relates to such an angle of attack probe, of the type comprising a probe body on which is mounted, movable in rotation by a flow, a vane.
- a problem encountered in this type of application and in particular on an aerodynamic profile (and even more on a laminar profile) placed in a transonic flow is the phenomenon of local overspeed which can result in a sudden stall of the wing.
- This stall is linked to the aerodynamic component parallel to the wingspan which increases the resultant of the local velocity vector.
- angle of attack sensor vanes commonly use swept airfoils which delay the risk of sudden stall without however canceling it.
- this arrow also allows the aerodynamic focus to be pushed back, which increases the aerodynamic lever arm in relation to the axis of rotation of the vane.
- the object of the invention is to further improve the resolution of this problem.
- the subject of the invention is an incidence probe, in particular for an aircraft, of the type comprising a probe body on which is mounted, movable in rotation by a flow, a wind vane, characterized in that the wind vane comprises at least one deflector extending from the leading edge of this vane over at least part of the lower surface and/or the upper surface thereof.
- the vane comprises at least one deflector on its intrados and its extrados;
- At least one deflector extends over all or part of the chord of the weather vane; - It comprises means for heating at least one of this or these deflectors;
- the means for heating the or each deflector are associated with the means for heating the probe;
- the means for heating the or each deflector are associated with the means for heating the probe by thermal conduction.
- FIGS. 1 and 2 show respectively side and front views of a prior art angle of attack sensor
- FIGS. 3 and 4 respectively show side and front views of an angle of attack sensor according to the invention
- FIG. 5 shows a side view of an angle of attack sensor according to another embodiment
- FIG. 6 represents a view in section along the axis (Y-Y) of an angle of attack sensor according to the invention.
- FIGS. 1 and 2 illustrate an angle of attack probe, in particular for an aircraft, which is designated by the general reference 1 .
- This wind vane 3 comprises a base 4 associated with the probe body, received in a corresponding housing and associated with a protection 5.
- the probes use the same interfaces with the aircraft.
- the protection 5 of the base of the wind vane can result in a local growth on the line of the fuselage.
- one or more deflectors are used in the incidence probe according to the invention.
- FIGS. 3 and 4 indeed illustrate an angle of attack sensor according to the invention.
- This is designated by the general reference 10 in these figures and comprises a probe body 11 and a vane 12 with its base 12a.
- this vane comprises at least one deflector extending from the leading edge of this vane over at least a part of the lower surface and/or the upper surface thereof.
- the leading edge is the part of the vane facing the direction of flow. It is opposite the trailing edge.
- the or each deflector can extend in both directions along the Y-Y axis from the leading edge to the trailing edge and/or in the opposite direction.
- the deflector or deflectors are perpendicular to the plane of symmetry of the vane 12, with the aim of directing the flow of the fluid towards the trailing edge.
- the vane 12 can then include at least one deflector on its lower surface and its upper surface.
- the vane 12 can also comprise several deflectors parallel to each other and to the main axis of the Y-Y flow on its lower surface and/or several on its upper surface.
- the deflector(s) 13, 14 are spaced from the base 12a so that the flow passes partly between the base 12a and the said deflector(s).
- the height of the vane (corresponding to the wingspan) is defined according to the direction of elevation of the vane, an axis perpendicular to the direction of the flow.
- the or each deflector is spaced from the base 12a by a distance of between 1% and 100%, preferably between 10% and 90% and advantageously between 20% and 80%, of the height of the vane 12 along an axis perpendicular to the X-X flow direction. Said at least one deflector is thus in a position adapted to straighten the flow. These values allow the flow to pass between the or each deflector, thus making the operation of the deflector efficient. Moreover, these values ensure optimal stresses applied to the wind vane.
- the thickness of a deflector is defined along the axis XX, the height of a deflector is defined along the direction orthogonal to the vane 12 and its length is defined along the main direction of the flow YY.
- the thickness of said at least one deflector is in particular less than 30%, advantageously less than 20%, even more advantageously less than 10% and preferably 1% of its length.
- the height of said at least one deflector is in particular between 2% and 150% of its length, preferably between 5% and 130% and advantageously between 10% and 100%.
- the deflector or deflectors have a curved profile and therefore a thin thickness compared to the profile for the purpose of aerodynamics.
- these deflectors then play the role of flow straighteners and prevent the sudden stalling of the entire probe wing.
- deflectors In the case of a canopy with a double boom, deflectors must be placed in such a way as to protect each different section of boom.
- the vane 12 comprises several deflectors 13, 14 on a part of the underside of the vane 12 and several deflectors 13, 14 on a part of the upper surface of the vane 12 .
- the deflectors extend in both directions from the leading edge, towards the trailing edge and in the opposite direction.
- the deflectors protrude from the leading edge in particular by 25% to 50% of the length of the deflector along the Y-Y axis.
- the embodiment is otherwise similar to the embodiment presented previously and shown in Figure 3.
- FIG. 6 An example of a deflector is shown in Figure 6.
- the wind vane 12 shown has a more aerodynamic profile than that shown in Figures 3 and 4.
- the leading edge is then the end with the highest radius of curvature.
- Deflectors 13 and 14 go around the leading edge.
- the wind vane 12 being symmetrical along the X-X axis, the construction of deflectors 13 and 14, comparable to a single and same deflector, meeting on the leading edge is advantageous for balancing the vane 12. This also avoids the accumulation of stresses due to imbalance.
- this probe can also be associated with means for heating at least one of this or these deflectors.
- these deflector heating means are generally associated with the probe heating means, these probe and deflector heating means then being associated for example by thermal conduction.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2107330A FR3125129B1 (fr) | 2021-07-07 | 2021-07-07 | Sonde d'incidence notamment pour un aéronef |
| PCT/EP2022/068984 WO2023281013A1 (fr) | 2021-07-07 | 2022-07-07 | Sonde d'incidence notamment pour un aéronef |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4367521A1 true EP4367521A1 (fr) | 2024-05-15 |
Family
ID=77999084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22738489.8A Pending EP4367521A1 (fr) | 2021-07-07 | 2022-07-07 | Sonde d'incidence notamment pour un aéronef |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240308682A1 (fr) |
| EP (1) | EP4367521A1 (fr) |
| CN (1) | CN117597586A (fr) |
| FR (1) | FR3125129B1 (fr) |
| WO (1) | WO2023281013A1 (fr) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6941805B2 (en) * | 2003-06-26 | 2005-09-13 | Rosemount Aerospace Inc. | Multi-function air data sensing probe having an angle of attack vane |
| US7269998B2 (en) * | 2005-08-10 | 2007-09-18 | John N. Hutson, Jr. | Wind gauges and wind gauge kits |
| ES2394558B1 (es) * | 2010-01-18 | 2013-12-12 | Eads Construcciones Aeronáuticas, S.A. | Dispositivo de soporte para sonda. |
| CN203259541U (zh) * | 2013-05-16 | 2013-10-30 | 上海南华机电有限公司 | 配重内藏式风向标 |
| DE102013108626A1 (de) * | 2013-08-09 | 2015-02-12 | Kriwan Industrie-Elektronik Gmbh | Windsensor |
| US9239338B2 (en) * | 2014-02-19 | 2016-01-19 | Rosemount Aerospace Inc. | Vane device for a dynamic flow angle measurement |
| US9884685B2 (en) * | 2014-05-28 | 2018-02-06 | The Boeing Company | External case heater for an angle of attack sensor |
| CN104034301B (zh) * | 2014-06-10 | 2017-04-26 | 中国商用飞机有限责任公司 | 微小型迎角传感器 |
| US9702783B2 (en) * | 2014-08-01 | 2017-07-11 | Rosemount Aerospace Inc. | Air data probe with fluid intrusion sensor |
| US10725065B2 (en) * | 2016-11-14 | 2020-07-28 | Rosemount Aerospace Inc. | Angle of attack sensor with rotatable airfoil |
| GB2587136B (en) * | 2018-04-06 | 2022-04-06 | Summers Craig | Battery counter-weight for wireless sailboat wind instrument |
| US10877062B2 (en) * | 2018-05-09 | 2020-12-29 | Rosemount Aerospace Inc. | Aft-located heated ramp for ice and water management of angle of attack sensors |
| US11079404B2 (en) * | 2019-05-23 | 2021-08-03 | The Boeing Company | Test fixture for angle of attack (AOA) sensor vane |
| KR20220046703A (ko) * | 2019-08-30 | 2022-04-14 | 에어로소닉 엘엘씨 | 항공기 움직임을 기초로 한 오류 교정을 갖는 항공기 기류 센서 및 항공기 움직임을 기초로 한 상기 센서의 교정 프로세스 |
-
2021
- 2021-07-07 FR FR2107330A patent/FR3125129B1/fr active Active
-
2022
- 2022-07-07 EP EP22738489.8A patent/EP4367521A1/fr active Pending
- 2022-07-07 CN CN202280047782.7A patent/CN117597586A/zh active Pending
- 2022-07-07 WO PCT/EP2022/068984 patent/WO2023281013A1/fr not_active Ceased
- 2022-07-07 US US18/576,125 patent/US20240308682A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023281013A1 (fr) | 2023-01-12 |
| FR3125129A1 (fr) | 2023-01-13 |
| CN117597586A (zh) | 2024-02-23 |
| FR3125129B1 (fr) | 2023-07-14 |
| US20240308682A1 (en) | 2024-09-19 |
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Legal Events
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