EP4622867A1 - Ensemble propulsif pour un aeronef - Google Patents
Ensemble propulsif pour un aeronefInfo
- Publication number
- EP4622867A1 EP4622867A1 EP23813819.2A EP23813819A EP4622867A1 EP 4622867 A1 EP4622867 A1 EP 4622867A1 EP 23813819 A EP23813819 A EP 23813819A EP 4622867 A1 EP4622867 A1 EP 4622867A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axis
- propulsion assembly
- fluid
- panel
- tube
- 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
- B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
- B64D27/02—Aircraft characterised by the type or position of power plants
- B64D27/10—Aircraft characterised by the type or position of power plants of gas-turbine type
-
- 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
-
- 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
- B64D33/08—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of power plant cooling systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/32—Arrangement, mounting, or driving, of auxiliaries
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/213—Heat transfer, e.g. cooling by the provision of a heat exchanger within the cooling circuit
Definitions
- the present invention relates to a propulsion assembly for an aircraft.
- Figure 1 illustrates a propulsion assembly 10 for an aircraft.
- propulsion assembly 10 for an aircraft means an assembly comprising a reactor mast 12, a turbomachine 14 and its cowling 16.
- the reactor mast 12 is a massive part which makes it possible to attach a turbomachine 14 to an aircraft, and for example to a wing of the aircraft.
- the reactor mast 12 therefore comprises elements for fixing to the aircraft and elements for fixing the turbomachine 14.
- the reactor mast 12 has a generally elongated shape and extends along a first axis A.
- the turbomachine 14 is located under the reactor mast 12 or next to the reactor mast.
- the turbomachine can be suspended from the reactor mast 12 under the wing of the aircraft.
- the turbomachine can be installed at the rear of the aircraft fuselage.
- the turbomachine 14 has a generally elongated shape along a second axis B which can be parallel to the first axis A.
- the first and second axes A, B are located in the same plane P. This plane P can be vertical or inclined by relative to the vertical.
- the turbomachine 14 includes a lubrication system 18 which makes it possible in particular to lubricate the bearings of the turbomachine by circulation of lubricating oil.
- the cowling 16 surrounds the turbomachine 14 and extends along the second axis B.
- the cowling 16 can comprise several pieces and comprises two panels 20 of generally semi-circular shape which extend on either side of the aforementioned plane P .
- These panels 20 comprise upper longitudinal edges 22 which are fixed to the reactor mast 12 and arranged on either side of the plane P, near the position 12 o'clock, and lower longitudinal edges 24 which are generally fixed one to another. the other and are therefore located at the 6 o'clock position.
- These panels 20 are articulated by their upper edges 22 to be able to open the cowling 16 and intervene in the turbomachine 14 during a ground maintenance operation for example. This articulation is made possible by hinges 25 for fixing the upper edges 22 of the panels 20 to the reactor mast 12.
- Each of the panels 20 is articulated around a third axis C which can be parallel to the second axis B for example, from a position closed in which its lower edge 24 is at the 6 o'clock position, up to an open position in which its lower edge 24 is away from the 6 o'clock position.
- the cover 16 can carry at least one surface heat exchanger 26.
- An exchanger 26 of this type comprises an oil circuit 26' connected to the lubrication system 18, and an exchange surface which is exposed to a flow of cooling air.
- An exchange of calories between the surface and the oil circuit 26' of the exchanger makes it possible to cool the oil coming from the lubrication system 18 before returning it to this lubrication system 18, as illustrated by the dotted arrows at Figure 1.
- At least part of the cowling 16 can internally define an annular vein for the flow of an air flow around the turbomachine 14, such as as a flow vein of a secondary flow or other.
- the exchange surface of the surface exchanger 26 is therefore swept by this air flow.
- the exchanger 26 carried by the cowling 16 is connected to the lubrication system 18 by fluid connection means which must authorize the opening of the panels 20 and in particular their pivoting, without necessarily requiring disconnecting the exchanger 26 from lubrication system screw 18.
- connection means are flexible and flexible pipes 28, as illustrated in Figure 2.
- Each of these pipes 28 comprises an end 28a secured to a panel 20 and intended to be connected to the exchanger 26 carried by this panel 20, and an opposite end 28b secured to the reactor mast 12 and intended to be connected to the lubrication system 18 of the turbomachine 14.
- the oil circuit 26' of the exchanger 26 remains connected to the lubrication system 18 thanks to the flexibility of the pipes 28.
- Figure 2 shows two distinct states of deformation of the same pipe 28 for two different positions of a panel 20.
- the present invention proposes a simple, effective and economical solution to at least part of the aforementioned problems of the prior art.
- the invention is the result of technological research aimed at very significantly improving the performance of aircraft and, in this sense, contributes to reducing the environmental impact of aircraft.
- the invention relates to a propulsion assembly for an aircraft, this propulsion assembly comprising:
- turbomachine fixed to the reactor mast, this turbomachine extending along a second axis, the first and second axes extending in the same plane, the turbomachine comprising a fluidic system
- cowling which extends along and around the second axis, the cowling comprising at least one panel of generally semi-circular shape which extends around said second axis, said at least one panel comprising a longitudinal edge which is fixed to the reactor mast by hinges which define a third pivot axis of the panel, from a closed position in which it extends around the turbomachine to an open position in which it is spaced from the turbomachine, said at least one panel carrying at least one surface heat exchanger which comprises a fluid circuit connected to said fluid system, characterized in that the fluid circuit is connected to the fluid system by at least one rotating joint which is centered on the third axis and which is connected by a first rigid tube to the fluid circuit and by a second rigid tube to the fluid system, this rotating joint comprising a first member rigidly fixed to the first tube, and a second member rigidly fixed to the second tube, the first and second members being assembled so as to be able to rotate relative to each other around the third axis and to ensure fluid communication between the first and second tubes
- the invention thus proposes to connect the fluid circuit of the panel exchanger to the fluid system of the turbomachine, via at least one rotating joint.
- a first specificity of this rotating articulation is that it is centered on the third axis, that is to say on the articulation axis of the corresponding panel. There is therefore no particular force undergone by the joint insofar as it follows the movements of the panel during its movements.
- Another specificity of the rotating joint is that it is formed of rigid elements unlike the pipes of the prior art. It comprises rigid tubes and connection and articulation members of these rigid tubes. The fluid connection between the fluid circuit and the fluid system is ensured continuously regardless of the position of the panel.
- the propulsion assembly according to the invention may comprise one or more of the following characteristics, taken in isolation from each other, or in combination with each other:
- each of the first and second members comprises an internal L-shaped passage, a first end of which is connected to the corresponding tube, and a second end of which is connected to the other member;
- one of the first and second members comprises a male end which is engaged along the third axis in a female end of the other of the first and second members;
- the fluid circuit is connected to the fluid system by two rotating joints centered on the third axis, a first of these rotating joints being connected to an inlet of said fluid circuit, and a second of these rotating joints being connected to a fluid outlet of said circuit;
- At least one valve is mounted between the fluid system and the second rigid tube of the or each rotating joint;
- said at least one panel comprises an internal concave surface on which said at least one exchanger is located; - said plane in which the first and second axes extend is vertical or inclined relative to the vertical;
- said fluid circuit is an oil circuit or a coolant circuit
- the fluid circuit is connected to the fluid system by at least one double rotating joint which comprises:
- the cowling surrounds at least part of the turbomachine
- the cowling comprises two panels of generally semi-circular shape which extend on either side of said main axis,
- each of these panels has an upper and lower longitudinal edge
- the other of the panels carries another heat exchanger or another type of fluidic equipment
- the turbomachine extends under the reactor mast or next to the reactor mast, -- the or each panel has a general semi-circular shape.
- Figure 1 is a partial schematic perspective view of a propulsion assembly for an aircraft
- Figure 2 is a schematic perspective view of fluid connection means of a heat exchanger to a fluid system, according to the technique prior to the invention
- FIG. 3 is a schematic perspective view of the technology used for the fluid connection means in the context of the present invention.
- Figure 4 is a schematic view in axial section of fluid connection means in the context of the present invention.
- Figure 5 is a half schematic view in axial section of a propulsion assembly for an aircraft, and illustrates a first embodiment of the invention
- Figure 6 is a half schematic view in axial section of a propulsion assembly for an aircraft, and illustrates a second embodiment of the invention.
- the propulsion assembly 10 can be located under the wing of the aircraft or at the rear of the fuselage of the aircraft for example. Furthermore, the propulsion assembly 10 can be of any type and for example of the double or triple flow turbojet type, turbomachine with ducted or non-ducted fan, turboprop, open rotor, etc.
- the cowling 16 comprises two panels 20 of generally semi-circular shape which extend on either side of the aforementioned plane P and which comprise upper longitudinal edges 22 which are fixed to the reactor mast 12 by means of hinges 25. These upper edges 22 are located substantially in a 12 o'clock position being separated from each other by the reactor mast 12.
- Each of the panels 20 is articulated around a third axis C (defined by the hinges 25) which can be parallel to the second axis B for example, from a closed position in which its lower edge (not visible) is substantially at the 6 o'clock position , to an open position in which its lower edge is away from the 6 o'clock position.
- the angular movement between the two positions is for example greater than 30° around the axis C.
- the panel 20 can be an internal or external panel of the turbomachine and the propulsion assembly, and can be swept by a flow of gas passing inside or outside of the panel (in particular a secondary flow or flow external to the turbomachine).
- the exchanger 26 is therefore located inside or outside the panel 20, and therefore positioned on an internal or external surface of this panel 20.
- the fluid inlet 26a of the circuit 26' is connected to the fluid outlet 18b of the system 18 by a double articulation which comprises joints 30a and 30b of the type of that of Figure 3 for example.
- the first articulation 30a is centered on the axis C and the second 30b is centered on an axis parallel to the axis C.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Joints Allowing Movement (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Transmission Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2212297A FR3142456B1 (fr) | 2022-11-24 | 2022-11-24 | Ensemble propulsif pour un aeronef |
| PCT/FR2023/051803 WO2024110720A1 (fr) | 2022-11-24 | 2023-11-15 | Ensemble propulsif pour un aeronef |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4622867A1 true EP4622867A1 (fr) | 2025-10-01 |
Family
ID=85122452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23813819.2A Pending EP4622867A1 (fr) | 2022-11-24 | 2023-11-15 | Ensemble propulsif pour un aeronef |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4622867A1 (fr) |
| CN (1) | CN120379901A (fr) |
| FR (1) | FR3142456B1 (fr) |
| WO (1) | WO2024110720A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3424346A1 (de) * | 1984-07-03 | 1986-01-16 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart | Heizwasserfuehrung |
| FR3065490B1 (fr) * | 2017-04-24 | 2019-07-12 | Safran Aircraft Engines | Ensemble propulsif pour aeronef comportant des echangeurs de chaleur air-liquide |
| CN207854371U (zh) * | 2017-12-26 | 2018-09-11 | 中国移动通信集团广东有限公司 | 一种用于机柜的热管背板系统 |
| DE102018207851A1 (de) * | 2018-05-18 | 2019-11-21 | Bayerische Motoren Werke Aktiengesellschaft | Flüssigkeitssystem und Kraftfahrzeug mit einem solchen |
| FR3094750B1 (fr) | 2019-04-03 | 2021-11-26 | Safran Nacelles | Système de refroidissement de turboréacteur pour aéronef |
-
2022
- 2022-11-24 FR FR2212297A patent/FR3142456B1/fr active Active
-
2023
- 2023-11-15 WO PCT/FR2023/051803 patent/WO2024110720A1/fr not_active Ceased
- 2023-11-15 EP EP23813819.2A patent/EP4622867A1/fr active Pending
- 2023-11-15 CN CN202380087445.5A patent/CN120379901A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN120379901A (zh) | 2025-07-25 |
| WO2024110720A1 (fr) | 2024-05-30 |
| FR3142456A1 (fr) | 2024-05-31 |
| FR3142456B1 (fr) | 2025-03-14 |
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Legal Events
| Date | Code | Title | Description |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20250623 |
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| AK | Designated contracting states |
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| 17Q | First examination report despatched |
Effective date: 20260209 |