Patents Assigned to Deutsches Zentrum fur Luft-und
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Patent number: 10908258Abstract: Method and system of calibrating a sensor system which comprises sensor A and sensor B. Sensor A has a transmitter TXA for emitting a signal STXA and a receiver RXA for receiving a signal SRXA, wherein RXA and TXA operate independently in a radar mode of sensor A. Sensor B has a transmitter TXB, a receiver RXB, and a unit D, which is used to connect TXB to RXB in a transponder mode of sensor B, with the result that a signal SRXB received by RXB is emitted again by TXB as a signal STXB. A gain Gcon,B between signal SRXB and signal STXB is predefined. In a radar mode of sensor B, TXB is not connected to RXB, with the result that TXB and RXB operate independently. Emitted signals may be radar, light, or acoustic signals. The method and system can calibrate radar systems, lidar systems, or sonar systems.Type: GrantFiled: January 31, 2017Date of Patent: February 2, 2021Assignee: Deutsches Zentrum für Luft- und Raumfahrt e. V.Inventors: Jens Reimann, Björn Döring, Marco Schwerdt, Daniel Rudolf, Sebastian Raab
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Patent number: 10890070Abstract: A free piston apparatus includes a piston receptacle in which a piston device having a piston is reciprocable along an axis. The piston receptacle includes or forms a combustion chamber delimited by a wall arrangement forming an inlet opening for the supply of fresh gas and an outlet opening for the removal of exhaust gas. Fresh gas is suppliable via a supply conduit. The free piston apparatus includes a housing for fresh gas which is connected to the supply conduit in a flow direction of the fresh gas being supplied. The housing forms a settling chamber for fresh gas which surrounds the piston receptacle at least in sections in the region of the inlet opening in a circumferential direction of the axis. The settling chamber opens into the combustion chamber via the inlet opening.Type: GrantFiled: November 15, 2018Date of Patent: January 12, 2021Assignee: DEUTSCHES ZENTRUM FÜR LUFT-UND RAUMFAHRT E.V.Inventor: Stephan Schneider
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Patent number: 10877143Abstract: A method and device for geo-referencing of supplied aerial image data, which has been recorded by an imaging system and in which a part of the earth's surface is imaged, wherein the geo-referencing of the aerial image data is carried out based on the supplied geo-referenced synthetic aperture radar (SAR) image data, in which the same part of the earth's surface is imaged, wherein the method and system include: determination of essentially point-like radar signatures RS in the geo-referenced SAR image data, provision of a position of the sun for recording time of the aerial image data and the part of the earth's surface imaged therein, determination of elongated cast shadows SS produced in a direction of solar radiation in the aerial image data based on the position of the sun at the time of recording, determination in the aerial image data of initial points AP facing the sun of the determined cast shadows SS, determination of spatially corresponding point-like radar signatures RS and the initial points AP ofType: GrantFiled: November 29, 2017Date of Patent: December 29, 2020Assignee: Deutsches Zentrum für Luft- und Raumfahrt e. V.Inventors: Hartmut Runge, Thomas Krauss
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Patent number: 10859291Abstract: A parabolic trough collector module comprising an absorber tube, a parabolic reflector focusing the solar radiation to the absorber tube and with a reflector surface, and at least one support de-vice on which the parabolic reflector is mounted so that it can pivot. The support device includes a support head projecting over the reflector surface in the vertical direction, on which the absorber tube is mounted by a linear bearing structure forming a linear guide.Type: GrantFiled: January 8, 2016Date of Patent: December 8, 2020Assignee: DEUTSCHES ZENTRUM FÜR LUFT- UND RAUMFAHRT E.V.Inventor: Martin Eickhoff
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Patent number: 10844718Abstract: A free piston apparatus includes a piston receptacle in which a piston device having a piston is reciprocable along an axis. The piston receptacle includes or forms a chamber delimited by a wall arrangement forming an inlet opening and an outlet opening. A cooling device is arranged on the piston receptacle for cooling the wall arrangement. The cooling device includes or forms a cooling channel arranged radially outside on the wall arrangement. The cooling channel has first and second cooling regions axially on opposing sides of the outlet opening. The piston receptacle includes or forms an outlet chamber, arranged outside on the wall arrangement, for exhaust gas exiting via the outlet opening. The cooling channel has a third cooling region which flow-connects the first cooling region and the second cooling region along the outlet chamber and is positioned at least in sections radially outside of the outlet chamber.Type: GrantFiled: November 15, 2018Date of Patent: November 24, 2020Assignee: DEUTSCHES ZENTRUM FÜR LUFT-UND RAUMFAHRT E.V.Inventor: Stephan Schneider
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Patent number: 10837918Abstract: The present invention provides a non-destructive method of characterizing CMAS infiltration and CMAS assisted damage in thermal barrier coatings (TBCs). Such approach is especially relevant for determining the lifetime of coatings on e.g. turbines or parts of the turbines such as blades or in-liners of the combustion chambers. The turbines can be gas turbines or high-pressure turbines or others and may be stationary or used for example in aviation.Type: GrantFiled: March 23, 2018Date of Patent: November 17, 2020Assignees: Deutsches Zentrum für Luft-und Raumfahrt e.V, University of Central Florida Research Foundation, Inc.Inventors: Ravisankar Naraparaju, Uwe Schulz, Seetha Raghavan, Estefania Bohorquez
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Patent number: 10840029Abstract: The invention relates to a capacitor with a layered construction on a base element having open pores with inner pore surfaces. The base element is electrically conductive at least in a part of the inner pore surfaces and therefore forms a continuous electrode. The electrically conductive part of the inner pore surfaces is nanostructured. In the capacitor a layer of a solid body electrolyte is directly arranged on the electrode and an electrically conductive counter-electrode layer forming a counter electrode is directly arranged on the solid body electrolyte. The counter electrode is applied as a thin layer so that within the open pores a continuous free space remains. The invention also relates to a construction element comprising a foam structure which is part of such a capacitor. The invention also relates to a method of manufacturing such a construction element.Type: GrantFiled: June 21, 2018Date of Patent: November 17, 2020Assignee: DEUTSCHES ZENTRUM FÜR LUFT- UND RAUMFAHRT E.V.Inventors: Sebastian Geier, Thorsten Mahrholz
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Patent number: 10836385Abstract: A lane keeping assistance system including position means for determining a first position of the vehicle in a network with a first accuracy; first interface for providing trajectory of the vehicle in the network; second interface for providing position data of right boundary objects and position data of left boundary objects, and radar signatures of these boundary objects; radar system to scan right and left lateral environments of the vehicle and determine distances to objects on a right of the vehicle and radar signatures thereof, and distances to objects on a left of the vehicle and radar signatures thereof; evaluation unit to perform identification of acquired objects based on the first position, the provided data, and the determined data, and to determine a second position of the vehicle with a second position accuracy; and control device to control the vehicle taking into consideration the target trajectory and the second position.Type: GrantFiled: July 22, 2016Date of Patent: November 17, 2020Assignee: Deutsches Zentrum für Luft-und Raumfahrt e.V.Inventors: Hartmut Runge, Robert Klarner
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Patent number: 10754028Abstract: The present disclosure relates to a method for computer-implemented processing of SAR raw data, which comprises radar echoes from radar pulse. An interference radar echo and an interference pulse are associated with a respective radar pulse, wherein the interference pulse and the respective radar pulse have orthogonal waveforms. SAR raw data are focused by a first focusing on the interference pulses including a range compression and an azimuth compression, to obtain first focused data, where a filtering is used for the range compression of a respective radar pulse, which filtering is matched to the waveform of the associated interference pulse. Thereafter, the first focused data undergo a signal suppression, which at least partially suppresses the interference radar echo, as a result of which second focused data are obtained. These second focused data finally undergo a defocusing including range decompression and azimuth decompression to obtain modified SAR raw data.Type: GrantFiled: March 26, 2018Date of Patent: August 25, 2020Assignee: DEUTSCHES ZENTRUM FÜR LUFT-UND RAUMFAHRT E.V.Inventors: Michelangelo Villano, Gerhard Krieger, Alberto Moreira
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Patent number: 10742320Abstract: A method for transmitting a binary data signal to or from a satellite via an optical feeder link, wherein an optical transmitting interface carries out the following steps multiplexing binary physical layer frames which are associated with a plurality of carriers or a plurality of beams in a satellite communication system into a single bit stream, inserting a binary physical layer frame identification sequence upstream of each physical layer frame, wherein the physical layer frame identification sequence comprises: a unique binary synchronization sequence, a binary beam index sequence, a binary carrier frequency index sequence, a binary baud rate index sequence, a binary roll-off factor index sequence, a binary modulation index sequence.Type: GrantFiled: January 15, 2020Date of Patent: August 11, 2020Assignee: Deutsches Zentrum für Luft- und Raumfahrt e.V.Inventor: Svilen Dimitrov
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Patent number: 10666395Abstract: The invention relates to an AIS data transmission method using AIS standard-compliant AIS signals. The AIS data (5) to be transmitted is converted into AIS signals on the transmitter side and transmitted via a main channel (41). The AIS signals are received in an AIS receiver (2, 3) and converted back into received AIS data (6, 7). Error-correcting redundancy data is generated from the AIS data (5) to be transmitted or from parts of said data on the transmitter side, and the redundancy data can be used on the receiver side to correct errors of the received AIS data (6, 7). The redundancy data is converted into redundancy signals on the transmitter side and transmitted via an auxiliary channel (42) provided in addition to the main channel (41). The invention further relates to a corresponding AIS transmitter, a corresponding AIS receiver, and an AIS transceiver. The invention further relates to a system consisting of AIS transmitters and AIS receivers and to a computer program.Type: GrantFiled: December 7, 2016Date of Patent: May 26, 2020Assignee: Deutsches Zentrum für Luft- und Raumfahrt e.V.Inventors: Hermann Bischl, Armin Dammann, Simon Plass
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Patent number: 10663208Abstract: The present invention relates to a process for performing a chemical reaction consisting of at least two sequential reversible steps characterized by being performed in a cycle, and to a reactor for performing such process.Type: GrantFiled: May 6, 2015Date of Patent: May 26, 2020Assignee: Deutsches Zentrum für Luft-und Raumfahrt e.V.Inventors: Stefan Brendelberger, Jan Felinks
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Publication number: 20200153508Abstract: A method for transmitting a binary data signal to or from a satellite via an optical feeder link, wherein an optical transmitting interface carries out the following steps multiplexing binary physical layer frames which are associated with a plurality of carriers or a plurality of beams in a satellite communication system into a single bit stream, inserting a binary physical layer frame identification sequence upstream of each physical layer frame, wherein the physical layer frame identification sequence comprises: a unique binary synchronization sequence, a binary beam index sequence, a binary carrier frequency index sequence, a binary baud rate index sequence, a binary roll-off factor index sequence, a binary modulation index sequence.Type: ApplicationFiled: January 15, 2020Publication date: May 14, 2020Applicant: Deutsches Zentrum für Luft- und Raumfahrt e.V.Inventor: Svilen DIMITROV
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Patent number: 10632695Abstract: The invention relates to a fibrous-preform conveying device for conveying fibrous preforms, wherein at least one contact roller which on its circumferential face displays an electrode and/or counter electrode is provided, such that an electric contact with the fibrous preform to be conveyed is achieved in order to initiate a current flow in the fibrous preform when the fibrous preform is conveyed in the conveying direction.Type: GrantFiled: December 30, 2014Date of Patent: April 28, 2020Assignee: Deutsches Zentrum für Luft- und Raumfahrt e.V.Inventors: Fabian Zacharias, Yannis Grohmann
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Patent number: 10637576Abstract: A transmitter for an optical free-beam communication system includes two light transmitters for the optical transmission of a data signal using one single-sideband modulation, wherein each light transmitter emits a side of the band modulation so that a light signal arriving at a receiver corresponds to a double-sideband modulation.Type: GrantFiled: October 28, 2016Date of Patent: April 28, 2020Assignee: Deutsches Zentrum für Luft-und Raumfahrt e.V.Inventors: Ramon Mata Calvo, Dirk Giggenbach, Christian Fuchs, Ahmad Mustafa
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Patent number: 10612380Abstract: A free piston apparatus includes a piston receptacle in which a piston device having a piston is reciprocable along an axis. The piston receptacle includes a combustion chamber delimited by a wall arrangement forming an inlet opening for the supply of fresh gas and an outlet opening for the removal of exhaust gas. The free piston apparatus includes an inflow device, which has the inlet opening and is configured such that fresh gas flowing into the combustion chamber is directed to an incident flow region in the combustion chamber arranged offset axially to the inlet opening, which incident flow region is arranged off-center relative to the axis. A method for operating a free piston apparatus includes operating an inflow device which has an inlet opening configured such that fresh gas is directed to an incident flow region in a combustion chamber offset axially to the inlet opening.Type: GrantFiled: November 15, 2018Date of Patent: April 7, 2020Assignee: Deutsches Zentrum für Luft- und Raumfahrt e.V.Inventor: Stephan Schneider
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Patent number: 10605081Abstract: A free piston apparatus includes a piston receptacle in which a piston device having a piston is linearly reciprocable. The piston receptacle includes or forms a combustion chamber delimited by a wall arrangement forming a first opening and a second opening. The openings include an inlet opening for the supply of fresh gas and an outlet opening for the removal of exhaust gas for a uniflow scavenging of the combustion chamber. Movement of the piston device is controllable by a control device. The bottom dead center of the piston can be adjustable such that when the piston adopts the bottom dead center, the first opening is partially unblocked and partially blocked for adjusting a free cross sectional area of the first opening. An opening duration can also be adjustable. A method for operating a free piston apparatus includes controlling movement of a piston device with a control device.Type: GrantFiled: November 15, 2018Date of Patent: March 31, 2020Assignee: Deutsches Zentrum für Luft- und Raumfahrt e.V.Inventors: Stephan Schneider, Florian Kock
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Publication number: 20200066785Abstract: The invention relates to a TDI line detector (1), comprising n TDI lines (Z1-Zn), wherein each TDI line (Z) has m pixels (P), and at least one read-out electronics (11-14), wherein the TDI line detector (1) is subdivided into x submodules (S1-S4), wherein the number of lines (Z) of a submodule (S1-S4) is n/x, wherein a discrete read-out electronics (11-14) is associated with the last line of each submodule (S1-S4), wherein the length (L1) of the read-out electronics (11-14) corresponds to an integer multiple of the length (L2) of a pixel (P), wherein x?2 is, wherein the associated pixels (P) of different submodules (S1-S4) are arranged pixel to pixel relative to one another or the submodules (S1-S4) or groups of submodules (S1-S4) are laterally interlinked alternately by half a pixel (P).Type: ApplicationFiled: May 9, 2018Publication date: February 27, 2020Applicant: Deutsches Zentrum für Luft- und Raumfahrt e.V.Inventor: Andreas ECKARDT
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Patent number: 10574355Abstract: A method for transmitting a binary data signal to or from a satellite via an optical feeder link, wherein an optical transmitting interface carries out the following steps multiplexing binary physical layer frames which are associated with a plurality of carriers or a plurality of beams in a satellite communication system into a single bit stream, inserting a binary physical layer frame identification sequence upstream of each physical layer frame, wherein the physical layer frame identification sequence comprises: a unique binary synchronization sequence, a binary beam index sequence, a binary carrier frequency index sequence, a binary baud rate index sequence, a binary roll-off factor index sequence, a binary modulation index sequence.Type: GrantFiled: July 27, 2017Date of Patent: February 25, 2020Assignee: Deutsches Zentrum für Luft- und Raumfahrt e.V.Inventor: Svilen Dimitrov
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Patent number: 10551187Abstract: The invention relates to a method and a device (1) for determining the leading edges (S1, S2) of two overlapping image captures of a surface (OF), comprising at least one camera (2) having a matrix-type sensor (6), having n lines (7), a position and location measuring system (3), an evaluation unit (4) and a storage means (5), wherein an elevation model (H) of the surface (OF) and a projection model (P) of the camera (2) are stored in the storage means (5), which the evaluation unit (4) can access, wherein the camera position (P1, P2) in the first and second image capture is determined by means of the position and location measuring system (3), wherein a horizontal mid-point (M) between the two camera positions (P1, P2) is determined and a projection of the midpoint (M) onto the surface (OF) is carried out, wherein a back projection onto the sensor (6) is carried out in the first and second camera position (P1, P2) by means of the projection model (P) for the point (MO) determined in the above-mentioned manneType: GrantFiled: December 7, 2017Date of Patent: February 4, 2020Assignee: DEUTSCHES ZENTRUM FÜR LUFT-UND RAUMFAHRT E.V.Inventor: Daniel Hein