| KOREA AEROSPACE RESEARCH INSTITUTE Patent applications |
| Patent application number | Title | Published |
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| 20110320121 | NAVIGATION DEVICE AND ROAD LANE RECOGNITION METHOD THEREOF - Provided is a road lane recognition method in a navigation device, which can differentiate a road lane occupied by a vehicle running on bidirectional lanes, including estimating a vehicle location based on satellite signal received from a carrier-based navigation satellite system and correction information received from a master station; determining a drive direction of the vehicle using vehicle location information and road lane information stored in a digital map; for each road lane in the road lane information, calculating a distance between a center line of the respective road lane and the vehicle location using the vehicle location information and the road lane information; and determining the road lane having a minimum value among the calculated distances as a drive lane. | 12-29-2011 |
| 20110282577 | NAVIGATION SYSTEM AND METHOD OF RECOGNIZING TRAFFIC LANE USING THE SAME - Provided are a navigation system and a method of recognizing a traffic lane using the same. The navigation system includes an electronic map in which information about roads and spatial data of topographical features around roads are stored, a satellite navigational device that calculates a position and a transverse point of a vehicle on the road using satellite navigation information and the road information, a radio communication unit that receives information about positions of the navigational satellites from a base station, and a lane recognition unit that calculates the number of lane-specific visible satellites and the number of real visible satellites on the basis of information about a lane position of the electronic map, spatial data of the topographical feature located at the transverse point, and the position information of the navigational satellites, and that compares the number of lane-specific visible satellites with the number of real visible satellites to recognize a lane along which the vehicle is traveling. Thus, there are no restrictions in the aspects of installation and maintenance, and accurate lane recognition is possible without an influence on the weather conditions around the road. | 11-17-2011 |
| 20100329845 | TURBO-MACHINE HAVING BELLOWS UNIT FOR AUTOMATIC AXIAL THRUST CONTROL - The turbo-machine of the present invention includes a volute casing, a rotating shaft, an impeller, seals, an axial thrust control member and a bellows unit. The volute casing defines therein a fluid passage. The rotating shaft is rotatably provided in the volute casing. The impeller is coupled to the rotating shaft to draw fluid using centrifugal force. The seals are provided around the front and rear ends of the impeller to prevent leakage of fluid. The axial thrust control member is installed in the volute casing behind the impeller. The bellows unit includes the piston installed in the volute casing in a shape surrounding a circumferential outer surface of the axial thrust control member; and a bellows connected with one surface of the piston, the bellows having the predetermined elasticity; and an internal space, between the piston and the volute casing, isolated from the fluid drawn behind the impeller. | 12-30-2010 |
| 20100167039 | COMPOSITE LAMINATED STRUCTURE REINFORCED BY INSERTING PINS, A METHOD AND A APPARATUS FOR MAKING THE SAME AND A METHOD FOR MAKING THE APPARATUS - A composite laminated structure is reinforced by inserting pins into a device for manufacturing a composite laminated structure. The device has a bottom guide on a composite laminated structure in a pre- or post-cured state. The device has first vertical pins that are inserted into the composite laminated structure. A top guide, on the bottom guide, has guide pins that are movable in a vertical direction at positions corresponding to the first pins. | 07-01-2010 |
| 20100139440 | DOUBLE-WHEEL CONTROL MOMENT GYROSCOPE - Provided is a control moment gyroscope, in which a pair of momentum wheels are symmetrically disposed, thereby reducing torque noise and vibration, increasing output torque, and reducing its size. The control moment gyroscope includes a gimbal rim, a wheel frame having a first wheel frame located inside the gimbal rim and a second wheel frame having the same structure as the first wheel frame and symmetrically coupled with the first wheel frame, a first momentum wheel coupled to the first wheel frame, a second momentum wheel coupled to the second wheel frame corresponding to the first momentum wheel, a gimbal motor installed on an outer circumference of the gimbal rim and connected with first ends of the first and second wheel frames, and an angular velocity sensor installed on the outer circumference of the gimbal rim, connected with second ends of the first and second wheel frames. | 06-10-2010 |
| 20100064661 | INJECTOR HEAD OF LIQUID ROCKET ENGINE - An injector head of a liquid rocket engine in which a mixture of oxidizer and fuel is supplied to a combustion chamber, including an injection plate having through-holes, a partition plate mounted above the injection plate so as to define a space between itself and the injection plate, a fuel injector which injects the fuel supplied from a fuel manifold into the combustion chamber, with an upper portion thereof engaged with a lower surface of the partition plate and a lower portion thereof inserted into the through-holes of the injection plate, and an oxidizer injector engaged with an upper surface of the partition plate so as to inject the oxidizer supplied from an oxidizer manifold, wherein the partition plate is provided with an oxidizer supply hole through which the oxidizer injected from the oxidizer injector is delivered towards the fuel injected from the fuel injector. | 03-18-2010 |
| 20100057278 | SYSTEM FOR AUTOMATICALLY LANDING AIRCRAFT USING IMAGE SIGNALS AND METHOD OF CONTROLLING THE SAME - Disclosed herein are a system for automatically landing an aircraft using image signals and a method of controlling the system. The system includes an altimeter installed on the aircraft; a landing mark placed at a landing location on a landing runway; a camera installed on the aircraft, oriented toward the front of the aircraft, and configured to detect the shape of the landing mark in image information form; and a FCC configured to calculate the angle between the aircraft and the ground, the ground range and the slant range between the aircraft and the landing location using the altitude information measured by the altimeter, the image information of the landing mark captured by the camera, angle information composed of the pitch, roll and yaw angles of the aircraft, and the angle of entry into the landing runway, and configured to control the automatic landing of the aircraft. | 03-04-2010 |
| 20100043392 | MIXTURE RATIO STABILIZER FOR LIQUID PROPELLANT ROCKET ENGINE - There is provided a mixture ratio stabilizer for a liquid propellant rocket engine which comprises: a body internally having a chamber and a fuel supply hole communicating with an end of the chamber to receive fuel from a fuel supply pump, an oxidizer inlet, and a fuel outlet; a spool guide in the chamber and including a plurality of first orifices for the fuel outlet and the fuel supply hole to communicate with each other; a bellows in the chamber and having one end adjacent to the spool guide and the other end positioned adjacent to the oxidizer inlet, to expand and contract in accordance with the pressure of an oxidizer which flows into the oxidizer inlet; and a spool having a part placed in the spool guide. | 02-25-2010 |
| 20100024388 | Flow-Restricting Filter, Solid Propellant Gas Generator and Propulsion System Comprising the Same - The present invention discloses a flow-restricting filter capable of restricting intentionally the flow of the combustion gas from a solid propellant gas generator to an external member (for example, the nozzle) to rise up combustion pressure resulting in increasing a burning rate of the solid propellant and in reducing a burning area of the solid propellant and the overall size of the gas generator. The flow-restricting filter according to the present invention comprises a hollow member having a plurality of through holes formed thereon; and a flow-blocking plate provided at one end of the hollow member to form a space having one closed end and another opened end in the hollow member. | 02-04-2010 |
| 20090162191 | REAL-TIME TURBOMACHINERY BLADE BREAKAGE MONITORING UNIT AND TURBO-APPARATUS - Disclosed herein are a turbo-machinery blade breakage monitoring unit and a turbo-apparatus having the same. The blade breakage monitoring unit includes a pressure sensor disposed near a rotor having a plurality of blades to be rotated at a predetermined speed, the pressure sensor functioning to measure total pressures of the respective blades. The blade breakage monitoring unit further includes a controller electrically connected to the pressure sensor and functioning to judge whether or not each measured total pressure value, transmitted from the pressure sensor, is within a preset criterion total pressure range. With the use of the blade breakage monitoring unit, total pressures of the respective blades are monitored in real time at a position downstream of the blades when the blades are rotated at a high speed within the turbo-apparatus, such as a turbine, compressor and fan, enabling real-time monitoring of breakage of the blades. | 06-25-2009 |
| 20090159753 | MOMENTUM MANAGEMENT SYSTEM FOR REACTION WHEEL BY USING NULL SPACE VECTOR AND METHOD - A reaction wheel momentum management method using a null space vector is provided. In accordance with this method, when any one of at least four reaction wheels used for triaxial control is made unavailable or degraded, a degraded wheel is used as long as possible for improving the mobility of the behavior of a satellite. The method provides momentum management for an N-number of reaction wheels W | 06-25-2009 |
| 20080217385 | Tool for Diffusion Bonding of Multi Sheet Metal, Method of Manufacturing Structural Part Using the Same, and Structural Part Manufactured Using the Method - A method of manufacturing a structural part through diffusion bonding in solid state without secondary materials after stacking multi-sheet metal and a tool thereof are disclosed. The tool for diffusion boding of multi-sheet metal includes a top tool having a top gas inlet, a central tool coupled to the top tool for installing the multi-sheet metal inside the central tool, a bottom tool coupled to the central tool for supporting the multi-sheet metal and having a bottom gas inlet and a vacuum path for making a vacuum state or an inert gas environment, and a sealing plate interposed between the top tool and the central tool. | 09-11-2008 |
