WO2010007258A1 - Ensemble d'entrée d'air de nacelle de moteur d'avion - Google Patents
Ensemble d'entrée d'air de nacelle de moteur d'avion Download PDFInfo
- Publication number
- WO2010007258A1 WO2010007258A1 PCT/FR2009/050771 FR2009050771W WO2010007258A1 WO 2010007258 A1 WO2010007258 A1 WO 2010007258A1 FR 2009050771 W FR2009050771 W FR 2009050771W WO 2010007258 A1 WO2010007258 A1 WO 2010007258A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lip
- rollers
- air intake
- assembly
- ferrule
- 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.)
- Ceased
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
- B64D33/00—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for
- B64D33/02—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
-
- 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
- B64D29/00—Power-plant nacelles, fairings or cowlings
- B64D29/06—Attaching of nacelles, fairings or cowlings
-
- 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
- B64D33/00—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for
- B64D33/02—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
- B64D2033/0206—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes comprising noise reduction means, e.g. acoustic liners
-
- 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
- B64D33/00—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for
- B64D33/02—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
- B64D2033/0266—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes specially adapted for particular type of power plants
- B64D2033/0286—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes specially adapted for particular type of power plants for turbofan engines
Definitions
- the present patent application relates in particular to an aircraft engine nacelle air intake assembly.
- the equation of such an air inlet assembly is shown generically in FIG. 0 appended hereto.
- the air intake assembly 1 is placed upstream of the nacelle, and makes it possible to channel the air from outside to the blower 2 of the engine of the aircraft.
- the air intake assembly 1 may comprise an air intake structure 3 and, downstream of that here, an acoustic shell 5.
- the air intake structure 3 comprises an air inlet lip 7, a peripheral element constituting the leading edge of this air intake structure, and an outer panel 9 extending the outer portion of the air intake structure. the air intake lip 7.
- the acoustic shroud 5 consists essentially of a panel endowed with an acoustic absorption capacity (honeycomb structure for example), of substantially cylindrical shape, fixedly mounted on the fan casing (not shown) of the engine of the plane.
- acoustic absorption capacity honeycomb structure for example
- the air inlet structure can be slidably mounted in the direction D of the motor shaft, between an operating position shown in FIGS. 1 to 3, in which the acoustic shroud is in the extension of the inner edge of the engine. the lip, and a maintenance position in which this structure is spaced upstream of the acoustic shell.
- seal 13 between the lip 7 and the upstream edge of the ferrule 5 (FIG. 1)
- connecting pin 15 between a return of the lip 7 and the ferrule 5 Figure 2
- seal 1 7 between a chamfered edge of the lip 7 and a monolithic portion of the ferrule 5 ( Figure 3).
- an aircraft engine nacelle air intake assembly comprising an air intake structure having an air intake lip and an extending acoustic ferrule. downstream of said air intake lip and adapted to be mounted on said fixed structure, said air inlet structure being adapted to be movable relative to said fixed structure between an operating position, wherein said lip is in contact with said ferrule, and a maintenance position, wherein the said lip is spaced upstream of said ferrule,
- this assembly being remarkable in that it comprises rolling means adapted to allow the centering of this lip by relative to said ferrule.
- the presence of these rolling means makes it possible, while having a minimum clearance between the lip and the shell, to avoid any risk of jamming on opening and any risk of blockage on closing the air inlet.
- said rolling means comprise rollers integral with said air intake structure
- rollers are mounted on said air inlet lip
- rollers are mounted inside an extension of said lip, this extension being provided with openings allowing an active part of said rollers to pass,
- said extension has a chamfered end
- rollers are mounted on an inner partition of said lip
- bearing plates of said rollers are fixed on said ferrule, said support plates are fixed on a monolithic part of said ferrule, said rolling means comprise rollers suitable for being mounted on said fixed structure,
- said rolling means comprise rollers mounted on said ferrule, said lip has a bearing extension of said rollers,
- said rolling means comprise bearing rollers integral with said ferrule, and pins integral with said lip, arranged so as to penetrate inside said tunnels,
- the present invention also relates to an aircraft engine nacelle equipped with an air inlet assembly in accordance with the foregoing.
- FIG. 0 is a diagrammatic sectional view of a generic nacelle of the prior art mentioned in the preamble of the present patent application;
- FIGS. 1 to 3 are diagrammatic views in longitudinal section of zone Z of the nacelle of FIG. 0, making it possible to visualize several types of air inlet assemblies of the prior art mentioned. in the preamble of this patent application;
- FIGS. 4 to 14 are diagrammatic longitudinal sectional views of air intake assemblies of the present invention, according to various embodiments.
- FIGS. 4a, 7a, 11b, 12b, 14b are cross-sectional views, taken along the respective P-planes of FIGS. 4, 7, 11,
- FIGS. 15 and 16 are cross-sectional views taken along the respective planes P of Figures 1 3 and 1 4, two embodiments of a rolling tunnel.
- identical references denote identical or similar organs or sets of members.
- upstream and downstream will be used, these two terms being to be understood in relation to the direction of flow of the air with respect to the air inlet assembly, namely in this case from the left to the right of all the figures appended hereto.
- FIGS. 4 and 4a there can be seen a roller mounted pivotably within an extension of the lip 7, via a stirrup 27.
- the opening 23 formed inside the extension 21 allows this roller 19 to cooperate with a plate 25 of support of this roller 19 on the acoustic shell 5.
- the extension 21 is preferably formed on all or almost all of the circumference of the lip 7.
- stirrups 27 supporting the rollers 1 9 are fixed on the acoustic shroud 5, and cooperate with an L-shaped extension 21 of the lip 7.
- stirrups 27 and their associated rollers 19 are mounted on an extension 21 of the lip 7 having a chamfered downstream edge, which facilitates the engagement of the lip 7 with respect to the ferrule acoustic 5 when the movement of this lip from its maintenance position to its normal operating position.
- the extension 21 has openings 23 allowing the passage of the rollers 19 for their cooperation with the support plate 25.
- the upstream edge 29 of the acoustic shell 5 has a flattened structure, called “monolithic”, extremely compact and resistant.
- each set of stirrups 27 and roller 1 9 is attached to an inner wall 33 of the lip air inlet, this inner partition can be for example the partition defining a defrost compartment 35 for the air intake lip.
- the support of the rollers 19 on the acoustic shell 5 is via platens 25 disposed on a monolithic upstream edge 29 of this shell, similarly to the case of Figure 8.
- FIGS. 11 and 11a there is shown a variant similar to that of FIGS. 7 and 7a, except that the rollers 19 are each mounted on a movable stirrup 37, mounted in a manner adjustable within a fixed stirrup 27.
- Adjusting means such as screws 39, interposed between the fixed yoke 27 and the movable yoke 37, make it possible to adjust the radial position (that is to say in the direction R shown in FIGS. 11 and 11a) ) rollers 19.
- resilient return means 41 such as springs replace the adjustment means 39: these resilient return means interposed between the fixed stirrup
- downstream edge of the air inlet 7 is provided with a plurality of pins 43, these pins 43 cooperating with respective tunnels 45 formed in the upstream edge of the acoustic shroud 5.
- Each tunnel 45 is provided with rolling means such as balls 46 able to cooperate with the pins 43.
- the pins 43 are fixed on a radial extension 21 of the lip 7, and cooperate with bearing tunnels 45 attached to the radially outer face of the acoustic shroud 5.
- these reported bearing tunnels 45 can typically comprise a body 47 inside which, in this example, are mounted substantially at 1 20 °, three cylindrical rollers 49a, 49b, 49c cooperating with the respective pieces 43.
- the number of rollers is not limited, it is determined by those skilled in the art based on the force return angles seen by the structure in the facility considered centering systems.
- rollers 49a, 49b, 49c can be mounted inside the body 47 by means of resilient support means 51a, 51b, 51c, allowing a certain flexibility in the direction perpendicular to the axes of rotation of these rollers.
- rollers 49a, 49b, 49c are mounted on their respective axes by means of elastomeric elements, to obtain a result substantially similar to that of the elastic means 51, 51 b, 51 c.
- the rollers 19, the balls 46 or the rollers 49 make it possible to limit the friction of the air inlet lip with respect to the acoustic shroud, and thus to facilitate this sliding movement and to eliminate any risk. jamming.
- the rollers 19 When it is desired to replace the air intake lip in its normal operating position, that is to say by sliding it downstream in the direction of the acoustic shell 5, the rollers 19, the balls 46 or the rollers 49 allow docking without blocking this air intake lip on this acoustic shroud 5, and this despite the games between these sets of bodies that are calculated to the fair to meet the sealing constraints , optimized air flow and transmission of forces.
- the presence of the plates 25 makes it possible to distribute on the acoustic shell 5 the forces transmitted by the rollers 19.
- the presence of the adjustment means 39 makes it possible to adjust the positions of the rollers 19 radially when the air intake lip 7 is first mounted on the acoustic shroud 5, and / or subsequently, particularly in the case of slight deformation. the air intake lip 7 and / or the acoustic shell 5.
- the presence of the elastic return means 41 (or 51 a, 51 b, 51 c) makes it possible to obtain a certain damping of the forces transmitted between the air intake lip 7 and the acoustic shroud 5, in particular in a breakdown situation. of the engine associated with this air intake.
- the present invention is not limited to the embodiments described and shown, provided as simple examples.
- rollers could be interposed between the outer panel of the air intake structure and a fixed structure supporting the acoustic shell (ferrule fastening flange, or fan casing).
- precepts of the invention described in the context of the movement of an air intake lip with respect to an acoustic shell, could be applied to other moving parts of a nacelle. aircraft engine. All the concepts described may be used alone or in combination with each other, for example with conventional centering systems such as pins in an adjusted bore.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/000,683 US8662839B2 (en) | 2008-06-25 | 2009-04-27 | Aircraft engine nacelle air intake assembly |
| AT09797564T ATE522441T1 (de) | 2008-06-25 | 2009-04-27 | Lufteinlassanordnung für flugzeugtriebwerksgondel |
| CN200980123393.2A CN102066198B (zh) | 2008-06-25 | 2009-04-27 | 飞行器发动机舱进气口组件 |
| EP09797564A EP2288543B1 (fr) | 2008-06-25 | 2009-04-27 | Ensemble d'entree d'air de nacelle de moteur d'avion |
| CA2727864A CA2727864A1 (fr) | 2008-06-25 | 2009-04-27 | Ensemble d'entree d'air de nacelle de moteur d'avion |
| RU2011102057/11A RU2496687C2 (ru) | 2008-06-25 | 2009-04-27 | Воздухозаборный узел гондолы для двигателя летательного аппарата |
| BRPI0913183A BRPI0913183A2 (pt) | 2008-06-25 | 2009-04-27 | conjunto de entrada de ar de nacela de motor de avião e nacela de motor de avião. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR08/03558 | 2008-06-25 | ||
| FR0803558A FR2933073B1 (fr) | 2008-06-25 | 2008-06-25 | Ensemble d'entree d'air de nacelle de moteur d'avion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010007258A1 true WO2010007258A1 (fr) | 2010-01-21 |
Family
ID=40325895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2009/050771 Ceased WO2010007258A1 (fr) | 2008-06-25 | 2009-04-27 | Ensemble d'entrée d'air de nacelle de moteur d'avion |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US8662839B2 (fr) |
| EP (1) | EP2288543B1 (fr) |
| CN (1) | CN102066198B (fr) |
| AT (1) | ATE522441T1 (fr) |
| BR (1) | BRPI0913183A2 (fr) |
| CA (1) | CA2727864A1 (fr) |
| ES (1) | ES2372369T3 (fr) |
| FR (1) | FR2933073B1 (fr) |
| RU (1) | RU2496687C2 (fr) |
| WO (1) | WO2010007258A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3031341A1 (fr) * | 2015-01-07 | 2016-07-08 | Aircelle Sa | Ensemble propulsif pour aeronef |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030163985A1 (en) * | 2002-02-13 | 2003-09-04 | Stretton Richard G. | Cowl structure for a gas turbine engine |
| FR2901244A1 (fr) * | 2006-05-16 | 2007-11-23 | Airbus France Sas | Dispositif d'articulation de portes d'une nacelle d'aeronef et nacelle equipee dudit dispositif d'articulation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU435983A1 (ru) * | 1972-12-15 | 1974-07-15 | Н. Д. Березовский , Г. А. Бершов | Роликовый редуктор |
| US6220546B1 (en) * | 1999-12-29 | 2001-04-24 | The Boeing Company | Aircraft engine and associated aircraft engine cowl |
| FR2873986B1 (fr) * | 2004-08-04 | 2007-12-21 | Airbus France Sas | Ensemble moteur pour aeronef |
| FR2873987B1 (fr) * | 2004-08-05 | 2006-11-24 | Airbus France Sas | Ensemble moteur pour aeronef |
| CN100575690C (zh) * | 2005-09-12 | 2009-12-30 | 波音公司 | 包括锁定机构的反推力装置及其制造方法 |
-
2008
- 2008-06-25 FR FR0803558A patent/FR2933073B1/fr not_active Expired - Fee Related
-
2009
- 2009-04-27 CA CA2727864A patent/CA2727864A1/fr active Pending
- 2009-04-27 US US13/000,683 patent/US8662839B2/en not_active Expired - Fee Related
- 2009-04-27 AT AT09797564T patent/ATE522441T1/de not_active IP Right Cessation
- 2009-04-27 RU RU2011102057/11A patent/RU2496687C2/ru not_active IP Right Cessation
- 2009-04-27 ES ES09797564T patent/ES2372369T3/es active Active
- 2009-04-27 BR BRPI0913183A patent/BRPI0913183A2/pt not_active IP Right Cessation
- 2009-04-27 WO PCT/FR2009/050771 patent/WO2010007258A1/fr not_active Ceased
- 2009-04-27 CN CN200980123393.2A patent/CN102066198B/zh not_active Expired - Fee Related
- 2009-04-27 EP EP09797564A patent/EP2288543B1/fr not_active Not-in-force
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030163985A1 (en) * | 2002-02-13 | 2003-09-04 | Stretton Richard G. | Cowl structure for a gas turbine engine |
| FR2901244A1 (fr) * | 2006-05-16 | 2007-11-23 | Airbus France Sas | Dispositif d'articulation de portes d'une nacelle d'aeronef et nacelle equipee dudit dispositif d'articulation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3031341A1 (fr) * | 2015-01-07 | 2016-07-08 | Aircelle Sa | Ensemble propulsif pour aeronef |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2727864A1 (fr) | 2010-01-21 |
| ES2372369T3 (es) | 2012-01-19 |
| US20110103935A1 (en) | 2011-05-05 |
| RU2496687C2 (ru) | 2013-10-27 |
| CN102066198A (zh) | 2011-05-18 |
| US8662839B2 (en) | 2014-03-04 |
| BRPI0913183A2 (pt) | 2016-01-12 |
| EP2288543B1 (fr) | 2011-08-31 |
| RU2011102057A (ru) | 2012-07-27 |
| FR2933073A1 (fr) | 2010-01-01 |
| FR2933073B1 (fr) | 2010-06-04 |
| EP2288543A1 (fr) | 2011-03-02 |
| ATE522441T1 (de) | 2011-09-15 |
| CN102066198B (zh) | 2013-07-31 |
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