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Korea Aerospace Research Institute patents


Recent patent applications related to Korea Aerospace Research Institute. Korea Aerospace Research Institute is listed as an Agent/Assignee. Note: Korea Aerospace Research Institute may have other listings under different names/spellings. We're not affiliated with Korea Aerospace Research Institute, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "K" | Korea Aerospace Research Institute-related inventors


Liquid rocket engine using booster pump driven by electric motor

The present invention relates to a liquid rocket engine using a booster pump driven by an electric motor, and more particularly, to a liquid rocket engine using a booster pump driven by an electric motor in which a booster pump is installed between a propellant tank and a propellant pump so that a requirement for an inlet pressure of the propellant pump may be met even in a state in which an internal pressure of the propellant tank is reduced, resulting in reduced amount of a propellant and reduced weight of the propellant tank, and the electric motor configured to drive the booster pump may be efficiently cooled through an oxidant, a cooling line, and the like.. . ... Korea Aerospace Research Institute

Liquid rocket engine using pump driven by electric motor

The present invention relates to a liquid rocket engine using a pump driven by an electric motor, and more particularly, to a liquid rocket engine using a pump driven by an electric motor instead of using a gas generator and a turbine so that a system may be simplified, and an overheated electric motor may be efficiently cooled by circulating a propellant (an oxidant or a fuel).. . ... Korea Aerospace Research Institute

Device and method for controlling temperature of low-temperature pump

Provided is a cryopump enabling the maintaining of a preset temperature during a preset time, even when turned off. The cryopump may comprise: a displacer which adjusts outside temperature by compressing or expanding a refrigerant existing therein; a thermal conduction part which transfers heat outside the cryopump to the refrigerant; and a thermal conduction buffer part which, if the displacer is turned off, absorbs the heat outside that is transferred to the refrigerant, and uses same as energy for changing a phase.. ... Korea Aerospace Research Institute

Low-pressure chamber providing preset air pressure

Provided is a method for maintaining a preset air pressure of a low-pressure chamber. The method may comprise the steps of: measuring the inside air pressure of a low-pressure chamber; if the difference between the inside air pressure and a preset air pressure is the same or higher than a threshold value, adjusting the inside temperature of the low-pressure chamber by using a thermal conduction part disposed inside the low-pressure chamber; and by using a getter, making the difference to be below the threshold value by adsorbing or releasing molecules inside the low-pressure chamber according to the adjustment of the temperature. ... Korea Aerospace Research Institute

Shape-reconfigurable drone

A first embodiment relates to a shape-reconfigurable drone and, more specifically, to a shape-reconfigurable drone comprising unit module drones having a rectangular-parallelepiped body capable of applying a thrust in every direction, thereby being capable of flying horizontally without rotating the drone and of forming a drone assembly formed by the coupling of the unit module drones, and thus can fly solo or can fly in various shapes.. . ... Korea Aerospace Research Institute

Unfolding propellor unit type unmanned aerial vehicle

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.. . ... Korea Aerospace Research Institute

Antenna pattern synthesizing apparatus and method

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. . ... Korea Aerospace Research Institute

Docking simulator

A docking simulator according to an exemplary embodiment of the present disclosure is a docking simulator capable of mimicking docking between two flight vehicles in a zero gravity environment, the docking simulator including: a passive module which is disposed at a preset position; and an active module which performs docking with the passive module by approaching the passive module while performing a translational motion. According to the present disclosure, the docking simulator capable of performing, on the ground, a logic verification test for rendezvous docking between the two flight vehicles in the space in the zero gravity environment is implemented, and as a result, it is possible to perform more various logic verification tests for rendezvous docking by mimicking the rendezvous docking by using actual objects.. ... Korea Aerospace Research Institute

Tilt-prop aircraft

A tilt-prop aircraft is configured to operate in a vertical take-off and landing (vtol) mode or a forward flight mode by adjusting a tilt angle of a rotor connected to a wing. The tilt-prop aircraft includes: a blade included in the rotor and configured to rotate to produce lift and thrust; and a tilt center shaft configured to connect the rotor and the wing to each other and adjust the tilt angle of the rotor with respect to a flight plane of the tilt-prop aircraft, wherein when the tilt angle of the rotor is adjusted, a pitch angle of the blade is varied by a power transmission unit mechanically interlocked with the tilt center shaft.. ... Korea Aerospace Research Institute

Method and system for time to first fix (ttff) reduction of gps receivers using satellite based augmentation system (sbas) signal

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. ... Korea Aerospace Research Institute

Shock reducing tape spring hinge

Provided is a shock reducing tape spring hinge including fixing members fixed to at least two objects, respectively, a thin shell type tape spring having both end portions that are fastened to the fixing members, respectively, and a shell-shaped damping plate aligned with the tape spring, the damping plate having both end portions that are fastened to the fixing members, respectively. The damping plate and the tape spring may be configured to connect the at least two objects being spaced through the fixing members, and the damping plate may be configured to reduce a deployment shock occurring when the tape spring is deployed.. ... Korea Aerospace Research Institute

Spacecraft for space debris removal

A spacecraft for removing space debris is disclosed. The spacecraft includes a satellite bus, a shield member foldable on an outer side face of the satellite bus and disposed facing towards space debris to reduce a movement speed of the space debris, and a support member configured to support the shield member with respect to the satellite bus, in which the shield member includes a central panel configured to overlap one face of the satellite bus, a plurality of first panels connected to peripheral sides of the central panel and radially extended, and a plurality of second panels located between the first panels.. ... Korea Aerospace Research Institute

System and method for determining satellite image loss and computer-readable recording medium therefor

A system and a method for determining a satellite image loss and a computer-readable recording medium therefor are provided. The satellite image loss determination system includes a data receiving unit configured to receive packet data including satellite image data, time information, and a flag value, and angle data of a scan mirror that generates the satellite image data; a data comparing unit configured to compare the angle data received by the data receiving unit with angle data of the scan mirror previously determined in correspondence with the packet data; and an image loss determining unit configured to determine whether a loss has occurred in a satellite image generated from the satellite image data in consideration of a result of comparison of the data comparing unit.. ... Korea Aerospace Research Institute

Drop testing apparatus

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. ... Korea Aerospace Research Institute

04/19/18 / #20180105266

Unmanned aerial vehicle

A technical object of the present invention is to provide an unmanned aerial vehicle capable of performing a position movement while maintaining posture stabilization. To this end, the unmanned aerial vehicle of the present invention includes: a main body unit; a plurality of propeller motors of which the rotational speed is adjusted by the main body unit; supports which extend from the main body unit in order to support the plurality of propeller motors; propellers which are axially coupled to the plurality of propeller motors and output thrust; and tilting units which tilt rotating shafts of the propellers with respect to the main body unit.. ... Korea Aerospace Research Institute

01/25/18 / #20180022477

Support equipment for collecting reusable rocket

Disclosed is support equipment for collecting a reusable rocket, the support equipment including a plurality of supports located on a landing platform and spaced apart from one another, a contact support pad having a contacting face to contact a reusable rocket when the reusable rocket is landing, and connected to each of the supports to secure the reusable rocket, and a distance sensor configured to sense a position of the reusable rocket or the contact support pad, wherein each of the supports is configured to move the contact support pad based on information on a distance measured by the distance sensor, and the contact support pad is configured to secure the reusable rocket when the reusable rocket has landed, in order to prevent a damage of the reusable rocket.. . ... Korea Aerospace Research Institute

01/04/18 / #20180005530

System and method of extracting ground route of aircraft, and computer-readable recording medium thereof

A system for extracting a ground route of an aircraft includes an airport surface detector acquiring ground movement information of an aircraft detected in an airport, a mapper acquiring node information of the airport from a database and mapping the ground movement information with the node information, a route detector detecting taxi route information of the aircraft by collecting adjacent node information of a mapped coordinate and erasing redundant node information among collected adjacent node information, a node identifier identifying start node information or end node information of a taxi route by using stand node information of the aircraft, and a final route extractor extracting a final taxi route including an extracted shortest route by dividing the taxi route into a plurality of sub-routes and applying a shortest route algorithm to the divided sub-routes.. . ... Korea Aerospace Research Institute

12/21/17 / #20170361949

Method of controlling satellite

A method of controlling a satellite and a computer-readable recording medium are provided. The method is for controlling a satellite moving along an orbit having an inclination angle from the equatorial plane to capture due-north images. ... Korea Aerospace Research Institute

11/16/17 / #20170330465

Method for coupling flight plan and flight path using ads-b information

The present invention relates to a method for coupling a flight plan and a flight path using ads-b information, and more specifically to a method for coupling a flight plan and a flight path, wherein a flight data processing unit of an air traffic control system or an arrival management system separately and directly receives ads-b information such that the received ads-b information can be used for coupling a flight plan and a flight path of an aircraft.. . ... Korea Aerospace Research Institute

11/16/17 / #20170328999

Method for removing noise tone in digital region of imaging radar receiver, imaging radar receiver therefor, and program recording medium

The present invention relates to a method for removing a noise tone in a digital region of an imaging radar receiver, an imaging radar receiver therefor, and a program recording medium. A method for removing a noise tone in a digital region of an imaging radar receiver using a d-ramping structure according to an embodiment of the present invention is characterized by comprising the steps of: (a) extracting a noise tone location of a d-ramped image signal; (b) selecting a noise tone to be removed from the extracted noise tones using step (a); and (c) removing the selected noise tone of step (b) from source data.. ... Korea Aerospace Research Institute

11/09/17 / #20170320599

Apparatus and method for controlling a satellite

Provided is an apparatus for controlling an orbiting satellite by sensing a change in a yaw angle of the orbiting satellite and calculating a ground sample distance (gsd) based on the yaw angle. The apparatus may include a sensor configured to sense a yaw angle corresponding to yaw steering of the orbiting satellite, and a processor configured to calculate, based on the yaw angle, a gsd corresponding to a length of a pixel projected onto a planetary surface scanned by the orbiting satellite.. ... Korea Aerospace Research Institute

10/26/17 / #20170310001

Apparatus and method for controlling speed of satellite antenna

Provided is an apparatus for controlling a driving speed of an antenna of a mobile satellite travelling in an orbit. The apparatus may include a calculator configured to calculate an azimuth position range and an elevation position range for an effective beam width of the antenna based on an antenna orientation at which the antenna of the mobile satellite is oriented correctly to a ground station from a point in the orbit, and a controller configured to control a speed of the antenna based on a first azimuth in the azimuth position range and a first elevation in the elevation position range.. ... Korea Aerospace Research Institute

08/17/17 / #20170233072

Drone having reconfigurable shape

Provided is a drone having a reconfigurable shape, more specifically, a drone having a reconfigurable shape that is capable of being horizontally flown without a rotation motion of the drone by configuring unit module drones having a rectangular parallelepiped shape that may apply thrusts in six directions and is capable of being flown singly or flown in various shapes by forming an assembly drone by coupling between the unit module drones.. . ... Korea Aerospace Research Institute

06/29/17 / #20170184723

System and method for determining protection level

Disclosed is a system for determining a protection level. The system includes a receiver configured to receive an error augmentation for a satellite orbit and clock error, an error augmentation for an ionospheric error, an error augmentation for noise and multi-path between a receiver and a satellite, and an error augmentation for a tropospheric error, a first calculator configured to calculate a first adjustment coefficient to be applied to the error augmentation for the satellite orbit and clock error and the error augmentation for the ionospheric error, and a second calculator configured to calculate a protection level by applying the first adjustment coefficient.. ... Korea Aerospace Research Institute

06/29/17 / #20170182901

Post-type apparatus for containing and charging unmanned vertical take-off and landing aircraft and method of containing and charging unmanned vertical take-off and landing aircraft using the same

An apparatus and method for containing and charging an unmanned vtol aircraft are disclosed. The apparatus for containing and charging an unmanned vtol aircraft includes a post, an extended member, a cover, a fastening unit, and a charging unit. ... Korea Aerospace Research Institute

06/22/17 / #20170174367

Method and apparatus for comparing satellite attitude control performances

Provided is a method of comparing satellite attitude control performances, the method including generating, by a controller, a satellite task execution command, receiving, by an input and output (i/o) unit, a result of a simulation performed on a satellite attitude control by a satellite attitude control simulator based on the satellite task execution command, and transmitting, by the i/o unit, the satellite task execution command to a satellite based on the result of the simulation.. . ... Korea Aerospace Research Institute

06/08/17 / #20170159838

Multi-stage poppet valve

Provided is a multi-stage poppet valve including: a flow pipe in which a channel through which a fluid flows is formed; a fixing part extended inwardly from an inner peripheral surface of the channel of the flow pipe, and having a first channel formed therein, the first channel being hollowed in a vertical direction and having the fluid flowing therethrough; a main valve part disposed on the fixing part, having a second channel formed at the center of an inner portion thereof, and vertically moved by force acting in the vertical direction to open and close the first channel, the second channel having the fluid flowing therethrough; and an auxiliary valve part vertically moved in the second channel by force acting in the vertical direction to open and close the second channel, thereby controlling a flow rate of the fluid passing through the second channel.. . ... Korea Aerospace Research Institute

06/08/17 / #20170158326

Apparatus for remote sensing using drone

Disclosed herein is an apparatus for remote sensing using a drone. An apparatus for remote sensing using a drone includes: a drone station which communicates with a server through a satellite and includes a containment portion at an upper portion and a post portion at a lower portion; and a drone which is contained in a containment portion of the drone station and communicates with the drone station, and further includes: a solar panel which is installed at the drone station and converts solar energy into electric energy; an capacitor which is installed at the drone station and stores electric energy generated by the solar panel; and a charging container access deck which is installed at the containment portion and charges the drone.. ... Korea Aerospace Research Institute

05/18/17 / #20170138818

Testing apparatus for scramjet engine

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.. ... Korea Aerospace Research Institute

05/11/17 / #20170132943

Unmanned aerial vehicle

Provided is an unmanned aerial vehicle that broadcasts a route and future location information of the unmanned aerial vehicle within preset coverage based on sensing data and current location information of the unmanned aerial vehicle. The unmanned aerial vehicle includes a calculator configured to calculate a predicted route and second location information of the unmanned aerial vehicle corresponding to a preset period of time based on first location information and sensing data; and a transmitter configured to periodically broadcast a first notification signal that includes the first location information, the predicted route, and the second location information.. ... Korea Aerospace Research Institute

05/11/17 / #20170131411

Detecting and localization method of unknown signal using aircraft with ads-b system

A method of detecting an unknown signal and estimating a source location of the unknown signal using aircraft based on an automatic dependent surveillance-broadcast (ads-b) system is provided. The method includes a first step (s100′) for obtaining from a plurality of airborne aircrafts provided with a network system, an aircraft signal transmitted to neighboring aircraft. ... Korea Aerospace Research Institute

04/27/17 / #20170116866

Aircraft landing apparatus using gnss and sbas signals, and control method thereof

A landing receiving apparatus for aircraft landing, and a control method thereof are provided, in which the landing receiving apparatus includes a flight management system (fms) which is inputted with, by a user, destination airport, destination runway, and a receiver mode, a data storage portion which stores approach path data for landing of the aircraft; a receiver portion which calculates aircraft position information by using global navigation satellite system (glass) signals and satellite-based augmentation system (sbas) signals transmitted from an antenna portion, when a receiver mode inputted by a user is a gnss/sbas combination mode, and a landing guidance information generating portion which generates landing guidance information by using approach path data corresponding to a destination airport and a destination runway inputted by the user, and the aircraft position information, and transmits the generated landing guidance information to the fms.. . ... Korea Aerospace Research Institute

04/13/17 / #20170104560

Apparatus and method for coding packet

An apparatus for coding a plurality of packets in a multi-antenna system, the apparatus including a processor configured to determine space-time codes of the plurality of packets sequentially from a subsequent packet to maximize an average throughput of the plurality of packets, and a transmitter configured to transmit the plurality of packets to an antenna, is provided.. . ... Korea Aerospace Research Institute

03/16/17 / #20170073088

Apparatus and method for controlling a satellite

Provided is an apparatus for controlling an orbiting satellite by sensing a change in a yaw angle of the orbiting satellite and calculating a ground sample distance (gsd) based on the yaw angle. The apparatus may include a sensor configured to sense a yaw angle corresponding to yaw steering of the orbiting satellite, and a processor configured to calculate, based on the yaw angle, a gsd corresponding to a length of a pixel projected onto a planetary surface scanned by the orbiting satellite.. ... Korea Aerospace Research Institute

03/09/17 / #20170067998

Time synchronization method between satellite and ground equipment, and satellite system thereof

A synchronization method between satellite time and ground time, and a satellite system using the same are provided, in which the satellite system includes a satellite and a ground equipment, in which the ground equipment generates a satellite command including information about time difference between the ground time and the satellite time included in a telemetry data frame transmitted from the satellite and transmits the satellite command to the satellite, and the satellite can synchronize the satellite time with the ground time, using the information about the time difference included in the satellite command.. . ... Korea Aerospace Research Institute

02/16/17 / #20170046969

Sphere magnetic levitation system and method of operating sphere magnetic levitation system

Provided is a sphere magnetic levitation system having magnetic-aligning devices that magnetically align the position of a sphere levitated by electromagnets according to whether the sphere is levitated, and a method of operating the sphere magnetic levitation system. The sphere magnetic levitation system includes: a sphere; a plurality of electromagnets symmetrically positioned about the sphere and spaced apart from the sphere at equal distances; and a plurality of magnetic-aligning devices provided around the sphere, and coming into contact with the sphere or separated from the sphere by a predetermined distance according to the modes of the system. ... Korea Aerospace Research Institute

02/09/17 / #20170039862

Flight guidance method of high altitude unmanned aerial vehicle for station keeping

Disclosed is an automatic climbing and gliding method of a high altitude unmanned aerial vehicle (uav). The disclosed method includes setting a cylindrical virtual flight region so that the high altitude uav climbs and glides, setting a first target point on an end of a first flight radius which is vertically arranged to form the virtual flight region, setting second to nth target points at arbitrary second to nth flight radii sequentially arranged above or below the first flight radius, having the target points have a predetermined plane slope angle, and allowing the uav to climb along a straight path line sequentially connecting each of the target points.. ... Korea Aerospace Research Institute

02/02/17 / #20170029129

Solar propelled aircraft structure and solar panels control method

A solar propelled aircraft which has a wing having solar cell modules mounted therein includes: first solar cell modules which are positioned in a wing or a tail wing of the aircraft and receive solar energy directly from the sun; second solar cell modules which are positioned in a main wing or a tail wing of the aircraft and supplied with directed energy from the earth; and rotating shafts which rotate the first solar cell modules and the second solar cell modules so that the first solar cell modules and the second solar cell modules correspond to each other in both directions. The first solar cell module at the upper surface obtains solar energy from the sun, and the second solar cell module at the lower surface obtains directed energy transferred from the earth.. ... Korea Aerospace Research Institute

01/05/17 / #20170002893

Non-adhesive type vibration reduction apparatus

Provided is a non-adhesive type vibration reduction apparatus comprising: a support; a body; and an elastomer, wherein the elastomer is coupled in a non-adhesive manner in which an adhesive is not used, thereby preventing a separation of and reducing a damage of an elastomer which result from a weakening of an adhesive force.. . ... Korea Aerospace Research Institute








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