WO2015114266A1 - Alimentation en air d'un circuit de conditionnement d'air d'une cabine d'un aéronef a partir de son turbopropulseur - Google Patents
Alimentation en air d'un circuit de conditionnement d'air d'une cabine d'un aéronef a partir de son turbopropulseur Download PDFInfo
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- WO2015114266A1 WO2015114266A1 PCT/FR2015/050214 FR2015050214W WO2015114266A1 WO 2015114266 A1 WO2015114266 A1 WO 2015114266A1 FR 2015050214 W FR2015050214 W FR 2015050214W WO 2015114266 A1 WO2015114266 A1 WO 2015114266A1
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- compressor
- air
- pressure body
- turboprop
- low pressure
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Classifications
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- 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
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
- F02C6/06—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output providing compressed gas
-
- 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
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space
- B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned
-
- 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
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space
-
- 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
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space
- B64D13/02—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being pressurised
-
- 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
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space
- B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned
- B64D13/08—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned the air being heated or cooled
-
- 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
-
- 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
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/20—Adaptations of gas-turbine plants for driving vehicles
- F02C6/206—Adaptations of gas-turbine plants for driving vehicles the vehicles being airscrew driven
-
- 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
- F02C7/26—Starting; Ignition
- F02C7/268—Starting drives for the rotor, acting directly on the rotor of the gas turbine to be started
- F02C7/27—Fluid drives
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- 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
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/16—Control of working fluid flow
- F02C9/18—Control of working fluid flow by bleeding, bypassing or acting on variable working fluid interconnections between turbines or compressors or their stages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/563—Fluid-guiding means, e.g. diffusers adjustable specially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5826—Cooling at least part of the working fluid in a heat exchanger
- F04D29/5833—Cooling at least part of the working fluid in a heat exchanger flow schemes and regulation thereto
-
- 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
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space
- B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned
- B64D2013/0603—Environmental Control Systems
- B64D2013/0618—Environmental Control Systems with arrangements for reducing or managing bleed air, using another air source, e.g. ram air
-
- 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
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space
- B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned
- B64D2013/0603—Environmental Control Systems
- B64D2013/0696—Environmental Control Systems with provisions for starting power plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/20—Heat transfer, e.g. cooling
-
- 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
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
- F05D2220/323—Application in turbines in gas turbines for aircraft propulsion, e.g. jet engines
-
- 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
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
- F05D2220/324—Application in turbines in gas turbines to drive unshrouded, low solidity propeller
-
- 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
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
- F05D2220/325—Application in turbines in gas turbines to drive unshrouded, high solidity propeller
-
- 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
- F05D2240/00—Components
- F05D2240/60—Shafts
-
- 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
- F05D2260/40—Transmission of power
- F05D2260/403—Transmission of power through the shape of the drive components
- F05D2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
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- 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
- Y02T50/50—On board measures aiming to increase energy efficiency
-
- 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
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Definitions
- the present invention relates to the air supply of an air conditioning circuit of a cabin of an aircraft which is equipped with at least one turboprop engine.
- a turboprop comprises at least one low pressure body and a high pressure body, the low pressure body driving a propulsion propeller through a gear box or reduction box, commonly called PGB (for Power Gear Box).
- the low pressure body comprises a turbine rotor connected by a shaft to the propeller and possibly to a compressor.
- Each other body comprises a compressor rotor connected by a shaft to a turbine rotor.
- the air conditioning circuit is powered by air taken from one of the turboprop compressors.
- the pressure of the air supplied to the aircraft greatly exceeds the need, in particular during the climb phase of the aircraft, which requires protection devices in the event of overpressure and dimensioning of the air ducts accordingly ,
- the temperature of the air taken at the compressor greatly exceeds the regulatory constraint (maximum temperature when passing through the fuel zones), which requires a cooling device that is difficult to integrate into the nacelle (generally called pre-cooler - from English precooler) before sending air into the aircraft circuit, - a significant amount of energy is lost which penalizes the consumption and the efficiency of the turboprop,
- AGB Accessory Gear Box
- the present invention provides a simple, effective and economical solution to at least some of the problems of prior art.
- the invention proposes an aircraft turboprop, comprising at least one low pressure body and a high pressure body, or even an intermediate pressure body, at least one of said bodies comprising a compressor, the low pressure body driving a propulsion propeller by via a first gearbox, the turboprop engine further comprising means for supplying air to an air conditioning circuit of a cabin of the aircraft, characterized in that said means for supply comprises at least one charge compressor whose rotor is coupled to the low-pressure body, said compressor comprising an air inlet connected to means for withdrawing air from:
- turboprop compressor when all of said bodies has only one compressor, or - In the compressor of the low pressure body or the intermediate pressure body of the turboprop, when all of said body comprises at least two compressors.
- the air sampling takes place in the first stage or the first stages of the compressor, which makes it possible to limit the need for compression of the charge compressor.
- the charge compressor can thus be smaller, in order to improve its compression efficiency. It is also easier to cool the air for the cabin of the aircraft.
- the invention also makes it possible to reduce the section of the air bleed pipe in the compressor, compared to that of the previous pipe, because of the higher pressure of the air taken.
- the compressor rotor can be coupled to the low pressure body via the first gearbox.
- the compressor rotor is coupled to the low pressure body via a second gearbox
- the present invention thus proposes a new technology for supplying air to an air conditioning circuit of an aircraft cabin.
- This air is supplied by a compressor, preferably dedicated to the air supply of the cabin, and no longer taken from a turboprop compressor, which penalizes performance less.
- the rotor of this dedicated compressor is rotated by the low pressure body, via a gearbox, such as the (first) gearbox which connects the low pressure body to the propeller propeller.
- a gearbox such as the (first) gearbox which connects the low pressure body to the propeller propeller.
- the speed of rotation of the low pressure body is particularly constant during the same flight phase.
- Phase of flight is a phase during which the aircraft operates a single type of maneuver.
- the rotational speed of the rotor of the dedicated compressor will not depend on the operating conditions, and the dedicated compressor will be able to provide a flow of air at the minimum required pressure to the conditioning circuit, even at idle.
- the dedicated compressor may be one or more stages, each of any type, for example an axial or centrifugal stage.
- the compressor may comprise an air inlet connected to means for withdrawing air between an air intake sleeve and a turboprop compressor.
- a heat exchanger for example of the pre-cooler type, can be mounted either upstream or downstream of the dedicated compressor.
- a heat exchanger may be mounted between two compressors or two stages of compressor (if the latter comprises at least two), one of which may be formed by said charge compressor.
- the two compressors or two compressor stages can compose the dedicated charge compressor, in particular for the air supply of the cabin.
- the exchanger is disposed between the low pressure compressor or intermediate pressure and the dedicated compressor.
- the charge compressor may comprise an air outlet connected to a pipe intended to be connected to said circuit.
- This pipe may be equipped with at least one flow control system, for example a valve. It can be equipped with a heat exchanger, for example of the pre-cooler type.
- This pre-cooler can be simplified and be less cumbersome than in the prior art because the supply air of the dedicated compressor can have a relatively low temperature compared to the prior art. It is also conceivable that the air pressure exiting the dedicated compressor is close to the air pressure in the conditioning circuit, and therefore relatively low, which simplifies the pipe and in particular to use a pipe thin-walled to obtain a mass gain over the prior art.
- the turboprop engine may comprise a pneumatic starter of which an air inlet is connected to said pipe.
- the rotor of the pneumatic starter is coupled to the high pressure body by an accessory box and supplied with air by the aircraft via said pipe.
- Valves allow the exclusive powering of the starter.
- the present invention also makes it possible to feed the pneumatic starter via the pipes of the air conditioning circuit.
- the present invention also relates to a method of supplying air to an air conditioning circuit of a cabin of an aircraft which is equipped with at least one turboprop engine comprising at least one low pressure body and a high pressure body , or even an intermediate pressure body, at least one of said bodies comprising a compressor, the low pressure body driving a propulsion propeller through a first gearbox, characterized in that it comprises the steps of to draw air in the compressor turboprop, when all of said bodies has only one compressor, either in the compressor of the low pressure body or the intermediate pressure body of the turboprop, when all of said bodies comprises at least two compressors, feed at least one dedicated charge compressor with the air drawn, and driving a rotor of said charge compressor by the low pressure body of the turboprop.
- FIG. 1 is a very diagrammatic view of an aircraft turboprop engine and represents means for supplying air to an air conditioning circuit of a cabin of the aircraft, according to the prior art
- FIG. 2 is a very diagrammatic view of a gearbox for driving the dedicated compressor of the air supply means according to the invention
- FIG. 3 is a very schematic view of an aircraft turboprop engine and represents means for supplying air to an air conditioning circuit of a cabin of the aircraft, according to an embodiment of the invention. 'invention,
- FIGS. 4a, 4b and 4c are very schematic views of alternative embodiments of the air supply means of the aircraft according to the invention.
- FIG. 5 is a diagram showing the evolution of the air temperature taken as a function of entropy
- FIG. 6 is a view similar to that of Figure 3 and shows an alternative embodiment of the invention.
- FIG. 1 represents a turboprop 10 according to the prior art, for an aircraft.
- the turboprop 10 here is of the double-body type and comprises a low-pressure body 12 and a high-pressure body 14, the low-pressure body 12 driving a propulsion propeller through a gearbox 16 or reduction gearbox. commonly called PGB (for Power Gear Box). Only the shaft 18 of the propulsion propeller is shown in FIG.
- the low pressure body 12 here comprises only a turbine rotor connected by a shaft to the gearbox 16.
- the high pressure body 14 comprises a compressor rotor connected by a shaft to a turbine rotor.
- the shaft of the low pressure high body 14, called HP shaft 20 is tubular and coaxially traversed by the shaft of the low pressure body 12, called BP 22 or power shaft.
- the BP shaft 22 comprises at one end a pinion (not shown) coupled through a series of pinions of the gearbox 16 to the shaft 18 of the propulsion propeller.
- the turboprop engine 10 comprises an accessory equipment drive case 24 (called accessory gearbox or AGB for Accessory Gear Box) which is coupled to the high pressure body of the turbomachine 14, and in particular to the HP shaft, by the
- accessory housing 24 is mounted in the nacelle 28 of the turboprop 10, which is schematically represented by a rectangle in dashed lines.
- Accessory case 24 carries and drives several equipment including a pneumatic starter 30 which, as the name suggests, is intended to start the turboprop 10 by rotating its high pressure body, through the housing of accessories 24 and radial shaft 26.
- a pneumatic starter 30 which, as the name suggests, is intended to start the turboprop 10 by rotating its high pressure body, through the housing of accessories 24 and radial shaft 26.
- the turboprop engine 10 further comprises an air inlet 32 for supplying the engine with air, and a exhaust nozzle 34 for exhausting the engine gases. combustion.
- the turboprop engine further comprises a combustion chamber 35 between the compressors BP and HP, on the one hand, and the turbines HP and BP, on the other hand.
- the turboprop 10 is furthermore equipped with means for supplying air to an air conditioning circuit 36 of a cabin of the aircraft, these means comprising, according to the prior art, means for withdrawing air from the turboprop engine 1 0.
- the turboprop engine 1 0 is equipped with two ports 38 or compressed air sampling port, each of these ports 38 being connected by a valve 40, 42 to a pipe 44 of air supply circuit 36.
- the first port 38 or upstream port (with reference to the direction of flow of gas in the engine) allows to take air at an intermediate pressure.
- the valve 40 connected to this pipe 44 is of the non-return valve type.
- the second port 38 or downstream port allows to take air at high pressure.
- the valve 42 connected to this pipe 44 is open when the pressure of the air drawn by the valve 40 is not sufficient, the air taken by the valve 42 being prevented from being reinjected upstream by the anti-return function of the valve of the valve 40.
- the pipe 44 is equipped with a valve 46 which regulates the supply pressure of the circuit 36, and a heat exchanger 47 of the pre-cooler type, which is intended to lower the temperature of the air before its introduction into the the circuit 36.
- the pipe 44 is further connected by a pipe 48 equipped with a valve 50 to an air inlet of the pneumatic starter 30.
- the pipe 44 passes through an anti-fire wall 52 before being connected to the circuit 36 .
- the present invention overcomes these disadvantages by equipping the turboprop engine with a dedicated compressor, called a compressor load, whose rotor is coupled to the low-pressure body of the engine via the gearbox.
- FIG. 3 represents an embodiment of this invention, in which the elements already described in the foregoing are designated by the same references.
- the turboprop of FIG. 3 can be of the same type as that represented in FIG. 1 or of a different type. It can for example include more than two bodies.
- the low pressure body of the turboprop engine according to the invention may comprise a compressor BP.
- the turboprop 310 of FIG. 3 differs from that of FIG. 1 essentially by the air supply means of the circuit 36.
- These supply means here comprise a dedicated compressor 60 whose rotor 61 is coupled by the gearbox 16 to the low-pressure body 12 and in particular to the LP shaft 22.
- the rotor shaft 61 of the compressor 60 may carry a pinion gear 61 engaged with a pinion 18a of the shaft 18 of the propeller of the turboprop 1 10, this shaft 18 carrying another pinion 18b meshing with a pinion 22a of the shaft.
- BP 22 The pinions 18a, 18b, 22a, 61a are housed in the gearbox 16.
- the compressor 60 includes an inlet 62 and an air outlet 64.
- the air outlet 64 of the compressor 60 is connected to the air supply pipe 44 of the circuit 36.
- this pipe 44 comprises a valve 46 which regulates the supply pressure of the circuit 36, and a heat exchanger 47 of the pre-cooler type, which is intended to lower the temperature of the air before its introduction into the circuit 36.
- the pipe 44 is further connected by a pipe 48 equipped with a valve 50 at an air inlet of the pneumatic starter 30.
- the air inlet 62 of the compressor 60 is connected by a pipe 72 to a port 74 for withdrawing air from a compressor of the engine.
- a port 74 for withdrawing air from a compressor of the engine.
- the air sampling can take place on the low pressure compressor, that is to say the compressor of the low-pressure body 12. This is particularly the case in a twin-turbine turboprop engine linked.
- the turboprop is of the triple-body type (and comprises an intermediate pressure body of which a compressor would be arranged upstream of the high-pressure compressor) and free turbine, the air sampling could be carried out on the pressure compressor. intermediate.
- the turboprop would be of the triple-body type (and would include an intermediate pressure body of which a compressor would be arranged upstream of the high-pressure compressor and downstream of the low-pressure compressor) and linked turbine, the air intake could be carried out on the low pressure or intermediate pressure compressor.
- the air sampling could be carried out on the high-pressure compressor.
- the primary idea is to benefit only from the first compression stage (preferably the fourth stage maximum) to limit the size and performance of the charge compressor. If possible, the lower pressure compressor is used to maximize the operability of the high pressure body or even the intermediate pressure body. Two successive compressions, respectively in the compressor of a body and in the charge compressor, makes it possible to improve the thermodynamic cycle.
- the charge compressor 60 used in the context of the invention can be of any type and is for example a single or multi-stage axial compressor or a centrifugal compressor with one or more stages or a compressor. compound having one or more axial stages and one or more centrifugal stages. It is furthermore possible to use more than one charge compressor and for example two charge compressors connected in series.
- FIGS. 4a to 4c show alternative embodiments of the invention concerning in particular the position of the heat exchanger 47.
- the heat exchanger 47 can be mounted downstream of the compressor 60, FIG. that is to say on the pipe 44, as is the case in FIG. 2.
- the heat exchanger 47 is mounted between two compressors 60a, 60b. Each compressor may comprise one or more stages to cover the two aforementioned cases. Each stage may be an axial or centrifugal stage.
- the heat exchanger 47 is mounted upstream of the compressor 60, that is to say on the pipe 72 described with reference to FIG. 3. The heat exchanger 47 is thus mounted between the compressors (low pressure and load) which optimizes the cooling cycle of the air.
- the compression made of the ambient air for sending to the aircraft is illustrated.
- the withdrawn air must be compressed to bring it from the pressure P1 to the pressure P3 and an exchanger 47 is used to limit the outlet temperature.
- C represents the air sample and D represents the output of the charge compressor 60. It can be seen that, if the heat exchanger is placed after all the compression (pre-cooler configuration A), it must dissipate more heat than if it is placed after a first less compression (configuration B inter-cooler), supplemented by a second compression to reach the pressure P3.
- FIG. 6 represents another variant embodiment of the turboprop 410 according to the invention, which differs from that of FIG. 3 essentially in that the rotor 61 of the compressor 60 is coupled to the LP shaft 22, not by the control box. gears 16, but by another gearbox 80, which can be dedicated to perform this function of coupling the LP shaft to the rotor of the compressor 60.
- the gearbox 80 can be coupled to the LP shaft 22 via a radial shaft 82.
- the air supply of the circuit 36 may be carried out as follows, with any of the embodiments of the invention described in the foregoing.
- the low pressure body 12 and its shaft 22 After starting the turboprop 310, 410, the low pressure body 12 and its shaft 22 generally rotate at a substantially constant speed.
- the rotor of the compressor 60 is rotated at a substantially constant speed, which depends in particular on the reduction coefficient of the gearbox 16, 80.
- the rotation of the rotor shaft 61 of the compressor 60 causes the suction and withdrawing air through line 72 to air inlet 62 of compressor 60.
- This air is then compressed by compressor 60 which supplies line 44 with compressed air at a predetermined pressure.
- the valve 46 regulates the supply pressure of the circuit 36.
- the heat exchanger 47 makes it possible to lower the temperature of the air before it is introduced into the circuit 36 (FIG. 4a), before entering the compressor (FIG. 4c ) or between two compression phases ( Figure 4b).
- the rotor shaft 61 of the compressor 60 rotates at a constant speed in the case where the rotational speed of the low pressure body 12 is also constant.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pulmonology (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Supercharger (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1612995.9A GB2536848B (en) | 2014-01-31 | 2015-01-29 | Supply of air to an air-conditioning circuit of an aircraft cabin from its turboprop engine |
| US15/115,213 US10329023B2 (en) | 2014-01-31 | 2015-01-29 | Supply of air to an air-conditioning circuit of an aircraft cabin from its turboprop engine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1400264 | 2014-01-31 | ||
| FR1400264A FR3017159B1 (fr) | 2014-01-31 | 2014-01-31 | Alimentation en air d'un circuit de conditionnement d'air d'une cabine d'un aeronef a partir de son turbopropulseur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015114266A1 true WO2015114266A1 (fr) | 2015-08-06 |
Family
ID=50780611
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2015/050214 Ceased WO2015114266A1 (fr) | 2014-01-31 | 2015-01-29 | Alimentation en air d'un circuit de conditionnement d'air d'une cabine d'un aéronef a partir de son turbopropulseur |
| PCT/FR2015/050213 Ceased WO2015114265A1 (fr) | 2014-01-31 | 2015-01-29 | Alimentation en air d'un circuit de conditionnement d'air d'une cabine d'un aeronef a partir de son turbopropulseur |
| PCT/FR2015/050215 Ceased WO2015114267A1 (fr) | 2014-01-31 | 2015-01-29 | Alimentation en air d'un circuit de conditionnement d'air d'une cabine d'un aeronef a partir de son turbopropulseur |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2015/050213 Ceased WO2015114265A1 (fr) | 2014-01-31 | 2015-01-29 | Alimentation en air d'un circuit de conditionnement d'air d'une cabine d'un aeronef a partir de son turbopropulseur |
| PCT/FR2015/050215 Ceased WO2015114267A1 (fr) | 2014-01-31 | 2015-01-29 | Alimentation en air d'un circuit de conditionnement d'air d'une cabine d'un aeronef a partir de son turbopropulseur |
Country Status (4)
| Country | Link |
|---|---|
| US (3) | US10329023B2 (fr) |
| FR (1) | FR3017159B1 (fr) |
| GB (3) | GB2538018B (fr) |
| WO (3) | WO2015114266A1 (fr) |
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| FR3017159B1 (fr) * | 2014-01-31 | 2016-03-04 | Snecma | Alimentation en air d'un circuit de conditionnement d'air d'une cabine d'un aeronef a partir de son turbopropulseur |
| US10710738B2 (en) * | 2015-06-25 | 2020-07-14 | Pratt & Whitney Canada Corp. | Auxiliary power unit with intercooler |
| FR3048675B1 (fr) * | 2016-03-14 | 2022-02-18 | Snecma | Alimentation en air d'un circuit de conditionnement d'air d'une cabine d'un aeronef |
| US10731501B2 (en) * | 2016-04-22 | 2020-08-04 | Hamilton Sundstrand Corporation | Environmental control system utilizing a motor assist and an enhanced compressor |
| US10618666B2 (en) | 2016-07-21 | 2020-04-14 | United Technologies Corporation | Pre-start motoring synchronization for multiple engines |
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| EP3273006B1 (fr) | 2016-07-21 | 2019-07-03 | United Technologies Corporation | Démarrage en alternance d'un groupe bi-moteur |
| US10384791B2 (en) | 2016-07-21 | 2019-08-20 | United Technologies Corporation | Cross engine coordination during gas turbine engine motoring |
| EP3273016B1 (fr) | 2016-07-21 | 2020-04-01 | United Technologies Corporation | Coordination multimoteur pendant la motorisation de moteur à turbine à gaz |
| US10787968B2 (en) | 2016-09-30 | 2020-09-29 | Raytheon Technologies Corporation | Gas turbine engine motoring with starter air valve manual override |
| FR3058470B1 (fr) * | 2016-11-10 | 2019-05-10 | Safran Aircraft Engines | Turbopropulseur comprenant un generateur de gaz et une boite d'accessoires accouplee a une extremite arriere d'un arbre haute pression du generateur de gaz |
| US10823079B2 (en) * | 2016-11-29 | 2020-11-03 | Raytheon Technologies Corporation | Metered orifice for motoring of a gas turbine engine |
| ES2927636T3 (es) * | 2017-06-06 | 2022-11-08 | Airbus Operations Sl | Aeronave que incorpora una unidad de potencia para generar potencia eléctrica, neumática y/o hidráulica |
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| US11072435B2 (en) | 2018-10-25 | 2021-07-27 | Honeywell International Inc. | Inlet flow structure for turboprop engine |
| US11041501B2 (en) * | 2019-03-20 | 2021-06-22 | The Boeing Company | Compressed air system |
| ES2947461T3 (es) | 2019-07-01 | 2023-08-09 | Airbus Operations Slu | Instalación de aeronave para suministro de aire presurizado |
| US12275536B2 (en) * | 2019-10-24 | 2025-04-15 | Pratt & Whitney Canada Corp. | Aircraft power supply arrangements |
| US12215628B2 (en) | 2022-07-22 | 2025-02-04 | Rtx Corporation | Aircraft system with gas turbine engine powered compressor |
| US12435667B2 (en) | 2023-06-16 | 2025-10-07 | Pratt & Whitney Canada Corp. | Aircraft air system with dedicated compressor(s) |
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- 2015-01-29 WO PCT/FR2015/050214 patent/WO2015114266A1/fr not_active Ceased
- 2015-01-29 US US15/115,213 patent/US10329023B2/en active Active
- 2015-01-29 US US15/115,116 patent/US10703487B2/en active Active
- 2015-01-29 US US15/115,137 patent/US10858112B2/en active Active
- 2015-01-29 WO PCT/FR2015/050213 patent/WO2015114265A1/fr not_active Ceased
- 2015-01-29 WO PCT/FR2015/050215 patent/WO2015114267A1/fr not_active Ceased
- 2015-01-29 GB GB1612995.9A patent/GB2536848B/en active Active
- 2015-01-29 GB GB1612980.1A patent/GB2536847B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| US20170008633A1 (en) | 2017-01-12 |
| WO2015114265A1 (fr) | 2015-08-06 |
| FR3017159A1 (fr) | 2015-08-07 |
| US10329023B2 (en) | 2019-06-25 |
| US10703487B2 (en) | 2020-07-07 |
| GB2538018B (en) | 2020-03-18 |
| GB2536847B (en) | 2020-03-18 |
| US20160347457A1 (en) | 2016-12-01 |
| FR3017159B1 (fr) | 2016-03-04 |
| US10858112B2 (en) | 2020-12-08 |
| GB2536848B (en) | 2020-03-18 |
| US20160332736A1 (en) | 2016-11-17 |
| GB201612980D0 (en) | 2016-09-07 |
| GB2536847A (en) | 2016-09-28 |
| GB2536848A (en) | 2016-09-28 |
| GB201612995D0 (en) | 2016-09-07 |
| WO2015114267A1 (fr) | 2015-08-06 |
| GB2538018A (en) | 2016-11-02 |
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