WO2017060584A1 - Aeronef avec un ensemble propulsif comprenant un doublet d'helices a l'arriere du fuselage - Google Patents
Aeronef avec un ensemble propulsif comprenant un doublet d'helices a l'arriere du fuselage Download PDFInfo
- Publication number
- WO2017060584A1 WO2017060584A1 PCT/FR2016/052441 FR2016052441W WO2017060584A1 WO 2017060584 A1 WO2017060584 A1 WO 2017060584A1 FR 2016052441 W FR2016052441 W FR 2016052441W WO 2017060584 A1 WO2017060584 A1 WO 2017060584A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gear train
- differential
- fuselage
- epicyclic gear
- shafts
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 14
- 230000037406 food intake Effects 0.000 description 2
- 230000009347 mechanical transmission Effects 0.000 description 2
- 230000001141 propulsive effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/46—Arrangements of, or constructional features peculiar to, multiple propellers
- B64C11/48—Units of two or more coaxial propellers
-
- 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
- B64D27/14—Aircraft characterised by the type or position of power plants of gas-turbine type within, or attached to, fuselages
-
- 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—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
- B64D33/02—Arrangements 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
- B64D35/00—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions
- B64D35/04—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions characterised by the transmission driving a plurality of propellers or rotors
- B64D35/06—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions characterised by the transmission driving a plurality of propellers or rotors the propellers or rotors being counter-rotating
-
- 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
- B64D35/00—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions
- B64D35/08—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions characterised by the transmission being driven by a plurality of power plants
-
- 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
- F02C7/36—Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
- F02K3/02—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
- F02K3/04—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
- F02K3/072—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type with counter-rotating, e.g. fan rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/05—Multiple interconnected differential sets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
-
- 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
- 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
- F05D2260/40311—Transmission of power through the shape of the drive components as in toothed gearing of the epicyclical, planetary or differential type
Definitions
- the present invention relates to the aeronautical field in which the aircraft are propelled at least in part by a set of fan rotors arranged at the rear in the extension of the fuselage. Blower rotors are driven by engines such as turbojets.
- an aircraft is propelled by a propulsion system with counter-rotating fans, integrated in the rear of the fuselage of the aircraft, in the extension thereof.
- the propulsion system comprises two gas generators which feed a power turbine having two counter-rotating rotors for driving two fan rotors, the blowers being arranged downstream of the gas generators.
- Gas generators are gas turbine engines incorporated in the fuselage with separate air intakes that each feed a gas generator.
- the diameter of the nacelle wrapping the fan rotors is, according to this embodiment, substantially equal to that of the largest section of the fuselage of the aircraft.
- This nacelle integrates the power turbine.
- the maintenance of the ability to generate thrust may not be ensured.
- a total obstruction of the hot internal flow by the debris can occur. This would result in the total loss of thrust and a high pumping probability of the gas generators due to the sudden change in flow section.
- the installation mode of gas generators fully integrated into the fuselage assumes an arrangement of air inlets to not feed the generators with the boundary layer developed on the fuselage of the aircraft; the latter having a speed substantially less than the flight speed, is detrimental to the thermal efficiency of the gas generators.
- Patent FR 1 339 141 discloses a propulsion device disposed rearward in the tip of the fuselage so as to absorb the boundary layer and comprising a helix disposed in a channel downstream of the fuselage tip, supplied with air on the along the fuselage and driven by turbojets attached to the fuselage at the rear.
- the drive is provided either by a mechanical transmission or by the gas flow from the engines.
- the object of the present invention is to provide a solution adapted to the type of aircraft and propeller architecture which has just been described, in which a pair of propellers is available so that the assembly operates optimally independently of the different flight conditions.
- the problem posed concerns the drive of the pair of propellers by a set of engines likely to have variations in speeds and torques within a certain margin of operation.
- An object of the invention is also to supply the motors without ingestion of fuselage boundary layer or flow distortion, to maximize the thermal efficiency. It is also a question of maintaining the capacity to feed the thruster with the maximum air coming from the boundary layer in order to maximize the propulsive efficiency.
- the present invention also aims to maintain a thrust capacity in case of major failure of the propellant module. Presentation of the invention
- an aircraft comprising a fuselage, a thruster at the rear end of the fuselage and at least two engines each driving a motor shaft, the thruster comprising at least one propeller driven mechanically by the motor shafts.
- the aircraft is characterized in that the thruster comprises two propellers, each of the propellers being driven by a propeller shaft, the two propeller shafts being driven by the propellers.
- motor shafts via a transmission mechanism comprising first and second differential epicyclic gear trains, the first differential epicyclic gear train having an input connected to the output of the second differential epicyclic gear train and the second differential gear train comprising two inputs, each of said two inputs being mechanically connected to one of said motor shafts.
- the motor shafts extend radially with respect to the axis of the fuselage.
- the motor shafts are arranged in planes substantially perpendicular to the axis of the fuselage and different from each other.
- the first differential epicyclic gear train comprises an input and two outputs, the input being mechanically connected to the two drive shafts and each of the two outputs driving a propeller shaft.
- the first differential epicyclic gear train comprises an input sun gear and an output gear crown and gate.
- the input of the first differential gear train is connected to the output of a second differential epicyclic gear train, the second gear train differential gear comprising two inputs, each of said two inputs being mechanically connected to one of said motor shafts.
- this system makes it possible to supply power from two sources with differences in speeds or torques supplied, potential but relatively low, to a single output shaft.
- This shaft is then linked to a differential train to distribute the torque on the two propellers.
- the axis of rotation of the input of the first differential epicyclic gear train is coaxial with the axis of rotation of the output of the second differential epicyclic gear train.
- the second differential epicyclic gear train comprises a coaxial satellite carrier and integral with the output of the second differential epicyclic gear train, the satellites of the satellite carrier meshing on two opposite rings, coaxial with the satellite carrier, the two rings each being driven by one of the motor shafts.
- the satellites of the second differential epicyclic gear train are of radial axis with respect to the axis of rotation of the satellite carrier.
- the motor shafts are arranged radially with respect to the axis of rotation of the satellite carrier.
- the engines mounted on the fuselage of the aircraft are gas turbine engines including turbojets whose air inlet sleeves are spaced from the fuselage.
- the spacing of the inlet ducts is intended in particular to avoid the ingestion of the boundary layer of the air flowing along the fuselage by the engines avoiding disturbances associated with them which are penalizing on the plane the thermal efficiency of the engine.
- turbojets are configured to propel the aircraft in the event of a failure of the thruster. Indeed, turbojet engines can propel the aircraft independently of the thruster if necessary.
- the engines are single-flow turbojets and more particularly the turbojets are double-body.
- the propellers are mounted in a fan casing.
- FIG. 1 schematically shows the rear of the fuselage of an aircraft with the propulsion system according to the invention
- FIG. 2 shows the detail of the mechanical transmission between the motor shafts and the two propulsion propellers of the aircraft
- Figure 3 shows in more detail the structure of the second differential epicyclic gear train.
- the propulsion unit is mounted at the rear of the aircraft, of which the rear part of the fuselage 1 has not been represented.
- the engines are, in the example illustrated here, turbojets.
- a thruster is mounted at the rear tip of the fuselage 1.
- the thruster comprises a doublet 7 of propellers formed of two coaxial and contra-rotating bladed rotors, 71 and 73, in the axis of the fuselage.
- the pair of counter-rotating propellers 7 rotates inside a fan casing 10 which is connected by arms 1 1 to the fuselage 1 and which defines a stream of air flow. Upstream of the casing January 1, a space is provided between the leading edge and the fuselage to allow air supply of the doublet 7. In operation, the two propellers suck air at the tip of the fuselage and the evacuated backwards by the nozzle formed by the envelope 10.
- Both propeller rotors 71 and 73 are integral with coaxial propeller shafts 72, 74. These propeller shafts 72, 74 are rotated by motor shafts 32, 52 through a power transmission mechanism 15 represented by a single block and described hereinafter.
- the motor shafts 32, 52 extend radially with respect to the axis of the fuselage. In particular, each motor shaft 32, 52 is driven by a motor 3, 5 via a gear box with angle gear.
- the motor shafts 32, 52 are each arranged radially between the motors 3 and 5 and the power transmission mechanism 15 of the shafts 32, 35 towards the shafts 72 and 74 for driving the propellers.
- the mechanical power transmission chain which constitutes the mechanism 15, between the two motor shafts 32, 52 and the shafts 72, 74 comprises a first epicyclic gear train differential 40 and a second differential epicyclic gear train 60.
- the first differential epicyclic gear train 40 comprises a central sun gear 40p, on which meshes 40s planet gears mesh.
- 40s satellite gears are mounted on a 40ps satellite door inside a 40c crown.
- the sun gear 40p, the 40ps satellite carrier and the crown are rotatably mounted inside a differential housing, not shown. They are also coaxial with the two concentric shafts 72 and 74.
- the ring is secured to the shaft 74 and the satellite door is integral with the shaft 72.
- the second differential epicyclic gear train 60 comprises, within a not shown fixed casing, a first movable wheel 61, a second mobile 62, a 60ps satellite carrier and 60s satellite gears.
- the 60ps satellite door is integral with a shaft 100 rotatably mounted inside the fuselage and which is also integral with the sun gear 40p of the first differential epicyclic gear train 40.
- the shafts 100, 72 and 74 are supported by appropriate bearings, not shown, in the fixed structure of the fuselage.
- the shafts 100, 72, 74 are coaxial.
- the 60ps satellite carrier supports planet gears 60s whose axes are arranged in the same plane perpendicular to the shaft 100 and oriented radially relative to the shaft 100.
- the two mobile wheels are mounted via bearings in the housing 60f.
- the movable wheels 61 and 62 each comprise a first ring gear, 61c1 respectively 62c1, and a second ring gear 61c2 respectively 62c2.
- the first rings, 61c1 and 62c1, respectively, are of the same radius, arranged in two planes perpendicular to the axis of the shaft 100 of the satellite door while being opposite one another and axially distant from each other. the other to mesh with the 60s satellite gears.
- the movable wheels 61 and 62 each carry a second ring gear, 61c2 and 62c2 respectively.
- the second ring gear 61c2 of the wheel 61 is of greater diameter than that of the first ring 61c1 and meshes with a pinion 32p of the radial motor shaft 32.
- the radial motor shaft 32 extends outwardly toward the motor and is rotated by it through a 90 ° angle gear.
- the wheel 62 comprises a second ring gear 62c2, here of radius substantially equal to that of the ring 61c2 of the wheel 61.
- the ring 62c2 meshes with a pinion 52p integral with the motor shaft 52 radial.
- the two radial motor shafts 32, 52 are not placed in the same plane perpendicular to the axis of the shaft 100.
- the rings 61c2 and 62c2 constitute the two inputs of the second differential epicyclic gear train 60.
- the shaft radial motor 52 is connected by a suitable bevel gear to the drive shaft of the second motor.
- the pinions 32p and 52p with their respective shaft are supported by the fixed structure. They form the planetary gears of the differential system.
- the second differential epicyclic gear train 60 operates as follows: when the loads applied by the shafts 32 and 52 are the same, they rotate the planet carrier 60ps through its planet gears in rotation about its axis. 60s which remain fixed in their mark. If the forces applied by the motor shafts are no longer identical, the satellites are rotated about their axis.
- the combined power of two motors is applied to the shaft 100 which drives the sun gear 40p of the first differential epicyclic gear train 40.
- the latter outputs the distribution of the load between the two propellers 71 and 73 .
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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)
- Retarders (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1805438.7A GB2557817B (en) | 2015-10-05 | 2016-09-26 | Aircraft having a propulsion assembly comprising a pair of propellers at the rear of the fuselage |
US15/764,302 US10351252B2 (en) | 2015-10-05 | 2016-09-26 | Aircraft comprising a propulsion assembly including a pair of propellers at the rear of the fuselage |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1559450A FR3041933B1 (fr) | 2015-10-05 | 2015-10-05 | Aeronef avec un ensemble propulsif comprenant un doublet d'helices a l'arriere du fuselage |
FRFR1559450 | 2015-10-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017060584A1 true WO2017060584A1 (fr) | 2017-04-13 |
Family
ID=54608863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2016/052441 WO2017060584A1 (fr) | 2015-10-05 | 2016-09-26 | Aeronef avec un ensemble propulsif comprenant un doublet d'helices a l'arriere du fuselage |
Country Status (4)
Country | Link |
---|---|
US (1) | US10351252B2 (fr) |
FR (1) | FR3041933B1 (fr) |
GB (1) | GB2557817B (fr) |
WO (1) | WO2017060584A1 (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170057649A1 (en) * | 2015-08-27 | 2017-03-02 | Edward C. Rice | Integrated aircraft propulsion system |
US10526069B1 (en) * | 2016-09-08 | 2020-01-07 | Northrop Grumman Systems Corporation | Collapsible large diameter propeller for quiet aircraft |
US10822101B2 (en) * | 2017-07-21 | 2020-11-03 | General Electric Company | Vertical takeoff and landing aircraft having a forward thrust propulsor |
FR3090578A1 (fr) * | 2018-12-24 | 2020-06-26 | Airbus Operations | Système de propulsion BLI à trois propulseurs arrières |
US11193425B2 (en) * | 2019-06-19 | 2021-12-07 | Raytheon Technologies Corporation | Gearbox for boost spool turbine engine |
FR3107698B1 (fr) * | 2020-02-28 | 2024-08-02 | Airbus Operations Sas | Dispositif de propulsion d’aéronef combinant deux groupes propulseurs à rotor ouvert et un groupe propulseur BLI |
CN111301670B (zh) * | 2020-03-19 | 2023-06-16 | 常州华创航空科技有限公司 | 一种共轴双旋翼直升机主减速器及一种直升机 |
DE102020207003A1 (de) | 2020-06-04 | 2021-12-09 | Robert Bosch Gesellschaft mit beschränkter Haftung | Rotorbaugruppe für einen Flugkörper und Flugkörper |
US11725590B2 (en) | 2020-10-22 | 2023-08-15 | General Electric Company | Turbomachine and gear assembly |
FR3116511B1 (fr) * | 2020-11-25 | 2024-07-12 | Safran | Ensemble propulsif comprenant deux hélices contrarotatives |
FR3119605A1 (fr) * | 2021-02-10 | 2022-08-12 | Safran Transmission Systems | Ensemble propulsif d’aéronef amélioré |
CN113483059A (zh) * | 2021-07-07 | 2021-10-08 | 重庆大学 | 一种用于共轴直升机的分扭传动减速装置 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2480806A (en) * | 1939-03-07 | 1949-08-30 | Desmoulins Emile Hyacinthe | Propeller driving unit |
FR1339141A (fr) * | 1962-11-06 | 1963-10-04 | Messerschmitt Ag | Disposition de propulseurs à réaction à l'extrémité du fuselage d'un avion |
EP0272822A1 (fr) * | 1986-12-03 | 1988-06-29 | Short Brothers Plc | Propulsion pour aéronef |
FR2609136A1 (fr) * | 1986-12-31 | 1988-07-01 | Camara Alpha | Egalisateur de couple pour arbres contrarotatifs |
US5090869A (en) * | 1989-05-17 | 1992-02-25 | Rolls-Royce Plc | Variable pitch propeller module for an aero gas turbine engine powerplant |
FR2955085A1 (fr) * | 2010-01-08 | 2011-07-15 | Snecma | Systeme d'helices contrarotatives pour turbomachine d'aeronef |
US20120128487A1 (en) * | 2010-11-24 | 2012-05-24 | David John Howard Eames | Remote shaft driven open rotor propulsion system with electrical power generation |
EP2557033A2 (fr) * | 2011-08-12 | 2013-02-13 | Hamilton Sundstrand Corporation | Système modulaire d'hélices contrarotatives |
FR2997681A1 (fr) * | 2012-11-08 | 2014-05-09 | Snecma | Avion propulse par un turboreacteur a soufflantes contrarotatives |
WO2015134081A2 (fr) * | 2013-12-13 | 2015-09-11 | United Technologies Corporation | Système d'entraînement de turbine de travail montée transversalement |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2120821A (en) * | 1935-08-01 | 1938-06-14 | Waseige Charles | Propelling device for aeroplanes |
US2581320A (en) * | 1945-07-20 | 1952-01-01 | Douglas Aircraft Co Inc | Multiengine contra-rotating propeller drive transmission |
US2753005A (en) * | 1951-12-29 | 1956-07-03 | Adolphe C Peterson | Tiltable rotor unit with counterrotating propellers |
US4587866A (en) * | 1981-09-21 | 1986-05-13 | The Garrett Corporation | Constant speed drive system and planetary gear drive therefor |
WO2011127389A2 (fr) * | 2010-04-08 | 2011-10-13 | The Regents Of The University Of Colorado | Transmission hybride utilisant un train planétaire pour multiples sources de couple pour véhicules marins, terrestres à deux roues, ou aéronautiques |
DE102011078671B4 (de) * | 2011-07-05 | 2015-04-02 | Siemens Aktiengesellschaft | Elektrische Maschine mit zwei Axiallüftern |
-
2015
- 2015-10-05 FR FR1559450A patent/FR3041933B1/fr active Active
-
2016
- 2016-09-26 US US15/764,302 patent/US10351252B2/en active Active
- 2016-09-26 WO PCT/FR2016/052441 patent/WO2017060584A1/fr active Application Filing
- 2016-09-26 GB GB1805438.7A patent/GB2557817B/en active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2480806A (en) * | 1939-03-07 | 1949-08-30 | Desmoulins Emile Hyacinthe | Propeller driving unit |
FR1339141A (fr) * | 1962-11-06 | 1963-10-04 | Messerschmitt Ag | Disposition de propulseurs à réaction à l'extrémité du fuselage d'un avion |
EP0272822A1 (fr) * | 1986-12-03 | 1988-06-29 | Short Brothers Plc | Propulsion pour aéronef |
FR2609136A1 (fr) * | 1986-12-31 | 1988-07-01 | Camara Alpha | Egalisateur de couple pour arbres contrarotatifs |
US5090869A (en) * | 1989-05-17 | 1992-02-25 | Rolls-Royce Plc | Variable pitch propeller module for an aero gas turbine engine powerplant |
FR2955085A1 (fr) * | 2010-01-08 | 2011-07-15 | Snecma | Systeme d'helices contrarotatives pour turbomachine d'aeronef |
US20120128487A1 (en) * | 2010-11-24 | 2012-05-24 | David John Howard Eames | Remote shaft driven open rotor propulsion system with electrical power generation |
EP2557033A2 (fr) * | 2011-08-12 | 2013-02-13 | Hamilton Sundstrand Corporation | Système modulaire d'hélices contrarotatives |
FR2997681A1 (fr) * | 2012-11-08 | 2014-05-09 | Snecma | Avion propulse par un turboreacteur a soufflantes contrarotatives |
WO2015134081A2 (fr) * | 2013-12-13 | 2015-09-11 | United Technologies Corporation | Système d'entraînement de turbine de travail montée transversalement |
Also Published As
Publication number | Publication date |
---|---|
GB2557817A (en) | 2018-06-27 |
FR3041933A1 (fr) | 2017-04-07 |
US10351252B2 (en) | 2019-07-16 |
FR3041933B1 (fr) | 2018-07-13 |
GB201805438D0 (en) | 2018-05-16 |
US20180281979A1 (en) | 2018-10-04 |
GB2557817B (en) | 2021-04-21 |
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