EP3994062A1 - Vorrichtung zum starten und / oder warten von strahltriebwerken von flugzeugen und anderen fluggeräten, stationary air power unit - sapu - Google Patents
Vorrichtung zum starten und / oder warten von strahltriebwerken von flugzeugen und anderen fluggeräten, stationary air power unit - sapuInfo
- Publication number
- EP3994062A1 EP3994062A1 EP20723815.5A EP20723815A EP3994062A1 EP 3994062 A1 EP3994062 A1 EP 3994062A1 EP 20723815 A EP20723815 A EP 20723815A EP 3994062 A1 EP3994062 A1 EP 3994062A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compressor
- air
- aircraft
- electric motor
- diffuser
- 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
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F1/00—Ground or aircraft-carrier-deck installations
- B64F1/34—Ground or aircraft-carrier-deck installations for starting propulsion plant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F1/00—Ground or aircraft-carrier-deck installations
- B64F1/30—Ground or aircraft-carrier-deck installations for embarking or disembarking passengers
- B64F1/305—Bridges extending between terminal building and aircraft, e.g. telescopic, vertically adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F1/00—Ground or aircraft-carrier-deck installations
- B64F1/35—Ground or aircraft-carrier-deck installations for supplying electrical power to stationary aircraft
-
- 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
Definitions
- the present invention relates to a device for starting and / or servicing jet engines of aircraft and other aircraft according to the preamble of main claim 1.
- Such devices are required to supply compressed air for starting the turbines or the jet engines. It can also be used for air conditioning an aircraft, in which the necessary compressed air is generated by the device and fed to the aircraft.
- auxiliary power unit APU
- SAPU Styral Power Unit
- the present device describes such a SAPU.
- such devices are sometimes used to save or reduce maintenance costs for on-board start-up devices.
- the SAPU according to the invention fulfills all functions which an on-board APU also includes.
- Previous APUs consist of a fuel-operated gas turbine or a compressor driven by a diesel engine, which makes compressed air available by removing at least part of the compressed air flow so that the jet engine can be started. Just as for starting the engine, such a ground launch device can also be required for servicing an engine and / or for air conditioning an aircraft.
- DE 34 09 378 A1 discloses a supply system for the aerospace industry. The compressors in this publication are driven by internal combustion engines. The same drive is used to generate electrical energy via generators.
- EP 1 655222 A1 also discloses an APU in which a compressor is driven by means of internal combustion engines.
- the internal combustion engine should ensure that the APU can be used independently of other supplies.
- DE 20 2008 015 623 U1 also discloses a ground starting device which is supplied with electrical energy and in which compressed air is generated by the electrical energy.
- compressors are operated with a fuel cell, which supplies electrical energy to drive the compressors.
- the object of the present invention is to show a device for starting, air-conditioning and servicing jet engines of aircraft and other aircraft, which can take over the function of a stationary ground starter (SAPU) with low emissions.
- SAPU stationary ground starter
- noise emissions and emissions caused by the combustion of fossil fuels are to be reduced.
- This object is achieved with the features of main claim 1, namely that the device according to the invention for starting, air conditioning and servicing jet engines of aircraft and other aircraft is equipped with a compressor for generating compressed air which can be driven by an electric motor.
- the electric motor means that fossil fuels can be completely dispensed with when operating the device.
- emissions are kept as low as possible, since electric motors have less operating noise than internal combustion engines and no exhaust gases
- the device has means for low-loss rotary bearings.
- This means ensure a low friction loss when mounting the rotating parts of the electric motor and its directly coupled compressors.
- the electric motor drives the compressor via at least one rotatable shaft, whereby bearings are provided for the rotatable shaft.
- These bearings are now designed in such a way that they cause less friction losses during storage than known roller or plain bearings. A particularly high reduction in friction losses is achieved through a structural unit made up of an electric motor and compressor.
- the means for the low-loss rotary bearing can comprise magnetic bearings.
- Such magnetic bearings support the rotatable shaft in a magnetic field and, because there is no physical contact with the bearing, have less friction loss than the known bearings mentioned above.
- These magnetic bearings can be designed to be active or passive. Active magnetic bearings generate their magnetic field using at least one electromagnet, passive bearings using at least one permanent magnet. It has been shown that active, magnetic bearings have the lowest losses during storage.
- the means for the low-loss rotary bearing can also represent eddy current bearings.
- the rotating parts are stored in a bearing that supports the shaft by generating eddy currents. In this bearing, too, no physical contacts between rotating parts and the bearing are provided.
- Corresponding means for low-loss rotary bearings enable rotating parts to be supported without material contact and hold the rotating parts by magnetic and / or electrical forces. As a result of this configuration, there is almost no frictional force when the rotating parts move in the bearings, so that the electric motor can work with as little loss as possible and with a high degree of efficiency.
- the compressor has several compression stages, but at least two. These are driven by the electric motor, the device having the aforementioned means for low-loss mounting in which the rotating elements of the electric motor are mounted, such as the drive shaft.
- the compressed air is generated in that air is compressed by a first compressor stage and the air compressed in this way is fed to at least a second compressor stage in order to be further compressed.
- a first compressor stage When using at least two compressor stages, the compressed air is generated in that air is compressed by a first compressor stage and the air compressed in this way is fed to at least a second compressor stage in order to be further compressed.
- There are more than two successive compressor stages are also conceivable.
- This multi-stage compression process enables higher pressures for the compressed air to be generated.
- the compressed air generated in this way can be used to start and / or maintain jet engines, but also to drive the aircraft's air conditioning system.
- the compressed air is fed to the air conditioning system of the aircraft or aircraft.
- the device according to the invention should preferably be used on a passenger boarding bridge or in stationary check-in facilities.
- the devices according to the invention are then attached to the passenger boarding bridge or the handling facility and use the voltage supply supplied there to supply the electric motor and thus to drive the compressor.
- an electrical power supply into the device according to the invention in order to be able to cover all the functionalities of the on-board APU with the device according to the invention.
- the connection options provided for this can guarantee the energy supply of the aircraft or aircraft for electrical energy.
- a typical power supply uses an electrical voltage of 115V and an alternating current frequency of 400 Hz. Should the voltage supply through the passenger boarding bridge have other voltages and / or other frequencies, it is proposed to use appropriate transformers and / or inverters in the invention Provide device.
- modular energy storage devices such as commercially available systems integrated in sea containers, can be used and integrated in the connection line in a suitable manner, depending on the existing infrastructure of the airport.
- SAPUs devices
- the compressor stages be designed as radial compressors. Radial compressors are compressors in which gas is accelerated outward by a rotating impeller and converted into pressure in a subsequent diffuser. Centrifugal compressors are characterized by good efficiency and low wear.
- an air inlet is provided through which air can be supplied to the device.
- the air inlet is thus connected to the first compressor stage of the compressor so that air from the first compressor stage can be sucked in and compressed through the air inlet, preferably ambient air.
- An air conditioning unit can be assigned to the air inlet according to the invention.
- a rotatably mounted paddle wheel is arranged in the air inlet for air treatment and that the rotatably mounted paddle wheel has pre-swirl blades.
- An air treatment of this kind then sets the rotatably mounted paddle wheel in motion when the air is sucked in through the air inlet and the pre-swirl blades on the paddle wheel can then move the sucked air in a kind of vortex and / or swirl in order to set different mass flows with a slight change in the pressure ratio to be able to. This allows the system efficiency to be optimized for different operating modes.
- the pre-swirl blades are rotatably mounted, so that the individual pre-swirl blades can be rotated and locked in order to be able to be optimized differently for the aforementioned operating modes.
- different eddies or swirls arise in the sucked in air.
- the diffuser blades of the diffuser of the compressor stages also be rotatably mounted. This rotary bearing allows the diffuser blades to be set at different angles to the compressor stage in order to ensure a corresponding mass flow as required or to enable a characteristic map to be expanded.
- the device comprise a frame on which the parts of the device can be attached.
- the device comprises the compressor and the electric motor.
- at least one electronic unit and / or at least one cooling system be added to the frame assemble.
- the frame can be covered by at least one maintenance hood, preferably by two maintenance hoods.
- the maintenance hoods make it possible to protect the device according to the invention against the unwanted influence of foreign materials, for example against dirt and water.
- At least one operating element is proposed, via which the device can be controlled.
- the generation of compressed air can then be started, regulated and / or ended via this control element.
- the aforementioned electronics unit is used to control the electric motor and thus to start up and brake the electric motor.
- the cooling system cools the components of the device, for example the electric motor and / or the electronics unit.
- air is supplied to the first compressor stage through the air inlet and is compressed by this.
- the subsequently compressed air can be transported from the first compressor stage to the second compressor stage, preferably through a connection provided for this purpose.
- the compressed air continues
- the device with an air outlet in order to lead out of the device the air compressed by the last compressor stage and thus the compressed air generated by the device.
- the air discharged in this way can then be fed to the jet engines via a distributor and / or at least one connection.
- the distribution can be a simple connection from the air outlet to the connection, but it is preferably proposed to use a hose system which can be pulled out and consists of at least one hose.
- the aforementioned connection should then be provided correspondingly frequently, both in number and in the distribution of hoses.
- the corresponding jet engine can be adapted in order to supply the compressed air generated by the device to the jet engine.
- the electric motor has a stator and a rotor, the rotor being designed as a motor shaft.
- the stator and motor shaft are enclosed in a housing.
- the motor shaft is then one of the rotating elements according to the invention, for which the means for low-loss rotary bearings are provided.
- the compressor can also be accommodated in the housing in order to form a structural unit comprising an electric motor and a compressor.
- the bearing of the rotating parts of the compressor then also has the low-loss rotary bearing according to the invention. This structural unit significantly reduces the friction loss.
- the air preparation contains at least one cover so that it is protected from external influences.
- An adjusting ring can also be provided by means of which the pre-swirl blades can be rotated. This makes it possible to rotate all pre-swirl blades equally and it is prevented that each blade has to be rotated individually.
- the noise level of the device can be reduced by the low-loss rotary bearing.
- the rotating noise of the device is therefore considerably less than with conventional APUs. This results from a significantly reduced friction on the bearing and a largely vibration-free system through the use of low-loss rotary bearings without mechanical bearings.
- An additional noise level reduction can also be achieved by using noise protection elements such as insulation, additional housings and / or noise protection hoods.
- the device described above makes it possible to reduce the noise produced to such an extent that, in the preferred case, the ground staff does not have to wear noise protection caps to operate the GAPU.
- a device for starting and / or maintaining jet engines of aircraft and other aircraft and possibly for air conditioning the aircraft and other aircraft with at least one compressor and at least one electric motor which drives the at least one compressor is provided.
- Such devices are also called Stationary Air Power Units (SAPU).
- SAPU Stationary Air Power Units
- the compressor consists of one or more compressor stages, the electric motor and the compressor having low-loss bearings for the rotating elements or parts of the at least one electric motor and / or the at least one compressor.
- FIG. 1 A perspective view of a device according to the invention on a passenger boarding bridge
- FIG. 2 A detailed representation of the device according to the invention from FIG. 1;
- FIG. 3 a perspective view of the frame of the device with the maintenance hoods attached
- FIG. 4 a perspective illustration of a device according to the invention without attached maintenance hoods
- FIG. 5 a perspective view of the compressor according to the invention
- FIG. 6 A section through the compressor according to the invention from FIG. 5;
- FIG. 7 An air treatment according to the invention with pre-swirl blades
- Figure 8 A detailed representation of the diffuser blades of the diffuser from a compressor stage.
- FIG. 1 shows a device 1 according to the invention for starting and / or maintaining jet engines of aircraft and other aircraft and preferably also for air conditioning aircraft and other aircraft.
- the device 1 according to the invention is arranged on a passenger boarding bridge 40.
- Passenger boarding bridges 40 are used wherever passengers reach the aircraft via a footpath (not shown in detail).
- the passenger boarding bridge 40 has a dock 43 by means of which the passenger boarding bridge 40 can be docked in the area of the door of the aircraft.
- the passenger boarding bridge can be provided for mobile use in an outside parking lot of an airport, for example in the form of an aircraft staircase. An additional energy supply would have to be provided here.
- the device 1 according to the invention is attached in the area of a chassis 42 on a frame 41 of the chassis 42. Since the passenger boarding bridge 40 is also supplied with electrical energy and has corresponding connections, electrical energy can very easily be added to the device 1 according to the invention through this arrangement.
- the device 1 has a distribution 2, designed here as a hose system. For this purpose, two hoses are attached to the device 1, which can be pulled out over drums. By using the drums, the distance to the aircraft can be overcome.
- FIG. 2 shows the aforementioned hose system as a distribution 2 in detail. It can also be seen that connections 3 are provided at the ends of the hoses of the distribution 2 in order to adapt the hoses to the aircraft.
- FIG. 3 shows a perspective view of a device 1 according to the invention.
- the components of the device 1 are attached to a frame 4.
- This frame 4 can be covered by a first and a second maintenance hood 6, 7.
- the maintenance hoods 6, 7 are to be opened for assembly and / or maintenance purposes.
- At least one operating element 5 is also arranged in the frame 4.
- the at least one operating element 5 serves to start, stop and / or control the device 1 according to the invention.
- the at least one operating element 5 can be embedded in the frame 4. But it can also be removable and act like a remote control.
- FIG. 1 A compressor 10 with a corresponding air inlet 11, an electronics unit 12 and a cooling system 13 are arranged on the frame 4.
- the electronic unit 12 serves to control the compressor 10 or the electric motor 14.
- the cooling system 13 serves to cool the electric motor 14 and the electronic unit 12.
- FIG. 5 shows a compressor 10 according to the invention in detail.
- the air inlet 11, via which air can be sucked in and fed to a first compressor stage 16, can thus be seen again.
- the first compressor stage 16 compresses the supplied air and leads it via a connection 17 to the second compressor stage 15. This compresses the air further and leads it to the air outlet 18, at which the compressed air can be tapped.
- Both compressor stages 15, 16 can be driven by an electric motor 14.
- FIG. 6 shows a section through a compressor 10 according to the invention and thus also shows the air inlet 11 and the air preparation 30 located therein. This will be shown in detail later. After the air has passed through the air inlet 11 and the air preparation 30 has been drawn in, it arrives at the first compressor stage 16. This is driven, just like the second compressor stage 15, by the electric motor 14
- the electric motor 14 includes a motor shaft 20, a stator 22 and a housing 21.
- Housing 21 surrounds the aforementioned engine parts.
- an active magnetic bearing 19 is proposed as a means for low-loss rotary bearing.
- the electric motor 14 and the compressor stages 15, 16 driven by it now compress the air into the desired compressed air, which is led out of the compressor 10 through the air outlet 18
- the aforementioned air treatment 30 is shown in detail in FIG. It can be seen here that the air preparation 30 consists of an impeller which has pre-swirl blades 33.
- the pre-swirl blades 33 are rotatably mounted so that different positions can be rotatably adjusted. As a result, a swirl and / or eddy is generated in the sucked in air, whereby the compressed air to be generated is conditioned accordingly
- An adjusting ring 32 is proposed for setting the rotatably mounted pre-swirl blades 33. By turning the adjusting ring 32, a position of the front all scoops 33 can be determined as a whole. To protect the air preparation 30, it is also proposed to provide a cover 31.
- FIG. 8 shows a diffuser of the compressor stages 15, 16.
- the compressor stages 15, 16 are designed as radial compressors and each have a diffuser. It is proposed according to the invention to make diffuser blades 34 adjustable. The position of the individual diffuser blades 34 can thus be changed, for example the position
- the generation of compressed air can be further optimized with regard to different operating points of the compressor map and adjusted to requirements.
- the diffuser effect can also be adapted to the air conditioning, which is generated by the air treatment.
- the present invention is not limited to the aforementioned features. Rather are further refinements are conceivable. It is proposed that the means for the low-loss rotary bearing be implemented not only in the axial direction but also in the radial direction in order to be able to absorb both types of forces. Alternatively, air storage is proposed, with an air stream that is branched off from the compressed air generated. Furthermore, it is possible to implement speed regulation via the electronics unit 14 and the at least one operating element 5. A further air or water circuit could be provided for cooling the components of the device according to the invention, with a cooler which is regulated as required by the self-heating of the individual components and the ambient conditions.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019117913.0A DE102019117913A1 (de) | 2019-07-03 | 2019-07-03 | Vorrichtung zum Starten und / oder Warten von Strahltriebwerken von Flugzeugen und anderen Fluggeräten (Stationary Air Power Unit - SAPU) |
| PCT/EP2020/061817 WO2021001081A1 (de) | 2019-07-03 | 2020-04-29 | Vorrichtung zum starten und / oder warten von strahltriebwerken von flugzeugen und anderen fluggeräten, stationary air power unit - sapu |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3994062A1 true EP3994062A1 (de) | 2022-05-11 |
Family
ID=70483111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20723815.5A Pending EP3994062A1 (de) | 2019-07-03 | 2020-04-29 | Vorrichtung zum starten und / oder warten von strahltriebwerken von flugzeugen und anderen fluggeräten, stationary air power unit - sapu |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3994062A1 (de) |
| DE (1) | DE102019117913A1 (de) |
| WO (1) | WO2021001081A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108100286A (zh) * | 2018-02-10 | 2018-06-01 | 白景魁 | 一种航母舰载机的高压气束接力助推滑跃式起降的方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1054220A1 (de) * | 1999-05-19 | 2000-11-22 | IST-Edelstahl-Anlagenbau AG | Schlauchhaspel für Fluggastbrücken |
| DE202009014270U1 (de) * | 2009-10-21 | 2010-02-18 | Kamag Transporttechnik Gmbh & Co. Kg | Druckluftstartgerät für ein Luftfahrzeug |
| US20110050430A1 (en) * | 2009-08-25 | 2011-03-03 | Twist, Inc. | Preconditioned Air (PCA) Temperature Monitor |
| DE102010035725A1 (de) * | 2010-08-28 | 2012-03-01 | Daimler Ag | Aufladeeinrichtung für eine Energieumwandlungseinrichtung |
| US8174396B1 (en) * | 2009-04-01 | 2012-05-08 | Twist, Inc. | Communication system from airport gate to cockpit |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3409378A1 (de) * | 1983-09-12 | 1985-03-28 | Bernd 6352 Ober-Mörlen Jung | Versorgungsanlage fuer die luft- und raumfahrt |
| DE4309119C2 (de) * | 1993-03-23 | 1998-11-19 | Jung Nadine | Anordnung zur Erzeugung von Kühlluft |
| EP0975862B1 (de) * | 1997-04-18 | 2003-01-08 | Honeywell International Inc. | Verbessertes integriertes klima- und hilfsantriebsaggregat |
| ITMI20042112A1 (it) * | 2004-11-04 | 2005-02-04 | Sergio Grassi | Dispositivo combinato di avviamento e condizionamento di aeromobili a turbina |
| DE102006041323A1 (de) * | 2006-09-01 | 2008-03-06 | Rolls-Royce Deutschland Ltd & Co Kg | Generator-Starter-Anordnung für ein Gasturbinentriebwerk |
| DE202008015623U1 (de) * | 2008-11-25 | 2009-02-19 | Rheinmetall Landsysteme Gmbh | Bodenstartgerät zum Starten von Turbinen von Flugzeugen |
| US10124911B2 (en) * | 2016-03-18 | 2018-11-13 | Hamilton Sundstrand Corporation | Taxi tug with auxiliary power services |
| US20180002037A1 (en) * | 2016-06-29 | 2018-01-04 | John Bean Technologies Corporation | Integrated mobile ground support system for servicing aircraft |
| DE102016118743B4 (de) * | 2016-10-04 | 2020-01-02 | Rheinmetall Landsysteme Gmbh | Bodenstartgerät zum Starten und Warten von Strahltriebwerken von Flugzeugen und anderen Fluggeräten |
-
2019
- 2019-07-03 DE DE102019117913.0A patent/DE102019117913A1/de active Pending
-
2020
- 2020-04-29 WO PCT/EP2020/061817 patent/WO2021001081A1/de not_active Ceased
- 2020-04-29 EP EP20723815.5A patent/EP3994062A1/de active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1054220A1 (de) * | 1999-05-19 | 2000-11-22 | IST-Edelstahl-Anlagenbau AG | Schlauchhaspel für Fluggastbrücken |
| US8174396B1 (en) * | 2009-04-01 | 2012-05-08 | Twist, Inc. | Communication system from airport gate to cockpit |
| US20110050430A1 (en) * | 2009-08-25 | 2011-03-03 | Twist, Inc. | Preconditioned Air (PCA) Temperature Monitor |
| DE202009014270U1 (de) * | 2009-10-21 | 2010-02-18 | Kamag Transporttechnik Gmbh & Co. Kg | Druckluftstartgerät für ein Luftfahrzeug |
| DE102010035725A1 (de) * | 2010-08-28 | 2012-03-01 | Daimler Ag | Aufladeeinrichtung für eine Energieumwandlungseinrichtung |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2021001081A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102019117913A1 (de) | 2021-01-07 |
| WO2021001081A1 (de) | 2021-01-07 |
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