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公开(公告)号：US11036900B2
公开(公告)日：2021-06-15
申请号：US15773370
申请日：2016-01-05
Applicant: KOREA AEROSPACE RESEARCH INSTITUTE
Inventor： Hoonhee Lee , Dawoon Jung
Abstract: Provided is a simulation device of a satellite, which updates a set value of a simulator, using a command signal transmitted to the satellite, operational data received from the satellite, and flight information. The simulation device of the satellite may comprise: a communication unit for receiving operational data from the satellite, and transmitting a command signal to the satellite; a flight control unit for calculating flight information of the satellite, using the received operational data; and an updating unit for updating a set value used for simulating an operation of the satellite, using at least one of the operational data, the command signal, and the flight information.
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公开(公告)号：US10989836B2
公开(公告)日：2021-04-27
申请号：US15779406
申请日：2016-11-24
Applicant: Korea Aerospace Research Institute
Inventor： Sang Burm Ryu , Sang Gyu Lee , Sang-soon Yong , Eun-Su Kang , Seung Hoon Lee , Hyeon-Cheol Lee , Sungwook Hong
Abstract: The present invention relates to a passive microwave sounder for a satellite, having a fixed reflection plate. The passive microwave sounder for a satellite, having a fixed reflection plate includes: a motor 100 including a first rotary shaft 110 formed to extend in a progressing direction of a satellite; a first rotating reflection plate 200 forming a predetermined angle with respect to the ground surface of a nadir direction and having a first one-side surface 210 and a first other-side surface 220, the center of the first one-side surface 210 being coupled to and rotating with the first rotary shaft 110, such that the first one-side surface 210 and the first other-side surface 220 alternately face the ground surface, and the second other-side surface 220 reflecting incident electromagnetic waves; an auxiliary reflection part 300 reflecting the electromagnetic waves incident from the first other-side surface 220 to a predetermined position; a reception part 400 receiving the electromagnetic waves reflected from the auxiliary reflection part 300; and a fixed reflection plate 500 fixed above the first rotating reflection plate 200 at a predetermined angle with the ground surface and reflecting the electromagnetic waves to the first one-side surface 210 or the first other-side surface 220.
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公开(公告)号：US10895073B2
公开(公告)日：2021-01-19
申请号：US16622546
申请日：2017-09-28
Applicant: KOREA AEROSPACE RESEARCH INSTITUTE
Inventor： Ill Kyung Park , Sung Joon Kim , Tae Uk Kim
Abstract: The present invention provides a device configured to effectively absorb repeated shock energy such as a vibration shock by using a composite tube, and the present invention has advantageous effects in that the shock energy caused by a tensile or compressive shock load may be effectively absorbed by the composite tube, and the shock energy absorption device may be applied to a building and used as a vibration control device capable of preparing for repeated earthquakes.
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公开(公告)号：US10817286B2
公开(公告)日：2020-10-27
申请号：US16190888
申请日：2018-11-14
Applicant: KOREA AEROSPACE RESEARCH INSTITUTE
Inventor： Hyun-Kyu Shin
Abstract: Provided is a method and apparatus for tracking and managing a code change between multiple projects. The apparatus includes a code management unit for generating function flow graphs by analyzing a structural and functional flow and annotated annotation from the project code input to a code management unit, comparing the generated function flow graphs for respective projects, and tracking changes based on information recorded in annotation formed by annotating the difference and changes deduced via comparison and generating a change tracking result, a change management unit for providing information on requirement and an ID by the request for a change of additional information as annotated annotation, receiving the change tracking result from the code management unit, and managing the change tracking result, and a display element for receiving the change tracking result from the code management unit and displaying the change tracking result on a monitor.
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公开(公告)号：US10807698B2
公开(公告)日：2020-10-20
申请号：US15579708
申请日：2015-12-09
Applicant: Korea Aerospace Research Institute
Inventor： Seon Ho Lee
Abstract: The present invention discloses an unfolding propeller unit type unmanned aerial vehicle including a body unit, a plurality of propeller units in which propellers are installed, a locking unit configured to lock the propeller units so that a state in which the propeller units are overlapping on the body unit is maintained, and propeller unit unfolders, each configured to connect each of the propeller units to the body unit, and unfold the propeller unit from the body unit so the propeller units are positioned around the body unit when locking of the locking unit is released.
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Patent Agency Ranking
公开(公告)号：US10788578B2
公开(公告)日：2020-09-29
申请号：US15818084
申请日：2017-11-20
Applicant: Korea Aerospace Research Institute
Inventor： Young Jin Won
Abstract: Provided is an antenna pattern synthesizing apparatus that synthesizes an antenna pattern by applying quantum-behaved particle swarm optimization (QPSO) algorithm of a satellite synthetic aperture radar (SAR), the antenna pattern synthesizing apparatus including a designer configured to design a mask template based on a performance of an SAR system including an antenna array in which a plurality of antennas are arranged in a multidimensional structure, and a generator configured to calculate a signal amplitude and a signal phase for the antenna array to generate a first antenna pattern using QPSO, and generate the first antenna pattern in the designed mask template based on the calculated signal amplitude and the calculated signal phase.
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公开(公告)号：US10787250B2
公开(公告)日：2020-09-29
申请号：US15960008
申请日：2018-04-23
Applicant: KOREA AEROSPACE RESEARCH INSTITUTE
Inventor： Tae Joo Kim
Abstract: Provided is a multi-copter, including: a fuselage; three or more intermediate supporting bars which have one ends fixed to the fuselage and radially extend from the fuselage; two mounting rods which are divided into two branches at the other ends of the intermediate supporting bars; and a propeller set configured by two propellers which are mounted to two mounting rods and rotate at the same rotational speed (RPM) in opposite directions. When an angle formed by any one propeller between two propellers which form the propeller set and the mounting rod is a first angle and an angle formed by the other one propeller and the mounting rod is a second angle, a difference between the first angle and the second angle is 360/2n degrees and n is a number of blades for every propeller.
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公开(公告)号：US10663384B2
公开(公告)日：2020-05-26
申请号：US15801870
申请日：2017-11-02
Applicant: KOREA AEROSPACE RESEARCH INSTITUTE
Inventor： Jung Jin Lee , Joong Wook Kim
Abstract: A drop testing apparatus is provided. The drop testing apparatus includes a plate connected to an external crane, a magnet holder provided at one end of the plate and fixed to the plate by an electromagnetic force, a counterweight provided at another end of the plate and facing the magnet holder, a dummy structure connected to the magnet holder through a connecting member and having a test specimen installed at one side thereof, a load cell unit provided between the dummy structure and the test specimen to measure impulse of the test specimen, and a controller configured to control the electromagnetic force to be created in the magnet holder and to receive the impulse measured by the load cell unit. When the electromagnetic force is cancelled, the connecting member disengages from the magnet holder, and the dummy structure and the test specimen fall onto the ground.
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公开(公告)号：US10649091B2
公开(公告)日：2020-05-12
申请号：US15819926
申请日：2017-11-21
Applicant: KOREA AEROSPACE RESEARCH INSTITUTE
Inventor： Jae Ik Park , Eun Sung Lee , Moon Beom Heo , Gi Wook Nam
Abstract: A Global Positioning System (GPS) receiver, a control method of the GPS receiver, and a GPS system are provided, which are capable of reducing an initial position check time using an SBAS signal transmitted from a SBAS satellite. The control method of a GPS receiver includes receiving an SBAS signal from a SBAS satellite and calculating a satellite clock and a satellite position of the GPS receiver using the received SBAS signal. The SBAS signal may contain a difference value between the ephemeris data and the almanac data of the GPS satellite. The difference value between the ephemeris data and the almanac data may include a satellite clock difference value and a satellite position difference value for the GPS satellite. Accordingly, it is possible to acquire the current position and time information more quickly and accurately, by shortening the initial position check time using the difference value between the ephemeris data and the almanac data included in the SBAS signal.
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公开(公告)号：US10408704B2
公开(公告)日：2019-09-10
申请号：US15240827
申请日：2016-08-18
Applicant: KOREA AEROSPACE RESEARCH INSTITUTE
Inventor： Yang Ji Lee
Abstract: A testing apparatus for Scramjet engine is capable of preventing breakage of liners in a high-pressure and high-temperature environment in which pressure is 10 Mpa or above and temperature is 1800 K or above. To this end, the testing apparatus for Scramjet engine includes a pipe that endures high-pressure environment, a first liner in a tubular shape, being provided within the pipe, and a second liner in a tubular shape, being provided within the pipe, in which an outer circumference of the second liner is overlapped with an inner circumference of a rear end of the first liner.
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