公开(公告)号：US20230412048A1

公开(公告)日：2023-12-21

申请号：US18330700

申请日：2023-06-07

Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

Inventor： Jung Jin LEE

IPC: H02K7/20 ,  H02K7/116 ,  H02P5/48

CPC classification number: H02K7/20 ,  H02K7/116 ,  H02P5/48

Abstract: A dual motor actuator according to an embodiment includes a main motor actuator outputting torque to a main output shaft by including a main motor and a main reduction gear, an auxiliary motor actuator outputting torque to an auxiliary output shaft by including an auxiliary motor and an auxiliary reduction gear, and a clutch connecting the main output shaft and the auxiliary output shaft to each other, wherein the clutch includes a fixed clutch connected to the main output shaft and a movable clutch coupled to or released from the fixed clutch and connected to the auxiliary output shaft, and the dual motor actuator further includes an output unit connected to the movable clutch and transmitting an output from the main motor actuator or the auxiliary motor actuator.

公开(公告)号：US20230408599A1

公开(公告)日：2023-12-21

申请号：US18328917

申请日：2023-06-05

Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

Inventor： Seok-Teak YUN

IPC: G01R31/392 ,  G01R31/367 ,  G01R31/3835

CPC classification number: G01R31/392 ,  G01R31/367 ,  G01R31/3835

Abstract: A method for estimating an aging amount of a battery mounted on a satellite includes receiving battery voltage and current data generated by detecting a voltage and current of the battery in a preset first sensing period during a precise sensing period, determining a mission start time point based on the battery current data, obtaining a first battery voltage value of a first time point based on the battery voltage data and the mission start time point, obtaining a second battery voltage value of a second time point when a preset reference time elapses from the first time point based on the battery voltage data, and estimating the aging amount of the battery based on a sensing voltage difference between the first battery voltage value and the second battery voltage value, a first reference voltage difference, and a second reference voltage difference.

公开(公告)号：US20230362085A1

公开(公告)日：2023-11-09

申请号：US18028564

申请日：2020-12-31

Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

Inventor： Hyun Chul BAEK

IPC: H04L45/00

CPC classification number: H04L45/22

Abstract: A multiple data transmission method and a multiple data transmission system are disclosed. A multiple data transmission system, according to one embodiment of the present invention, comprises: an identification unit for identifying, from among a plurality of separated networks, a first network to which a transmission device requesting data transmission belongs; a generation unit for generating a data packet by adding a destination address set for the first network as a header to data transmitted from the transmission device; and a transmission unit for transmitting the data packet to a reception device identified by the destination address, through a transmission path which connects the first network and a second network to which the reception device belongs.

公开(公告)号：US11811795B2

公开(公告)日：2023-11-07

申请号：US17539861

申请日：2021-12-01

Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

Inventor： Hyun Chul Baek ,  Tae Geun Son ,  Dae Won Chung

IPC: H04L1/00 ,  H04L67/06 ,  H04L9/40

CPC classification number: H04L63/1416 ,  H04L1/0061 ,  H04L1/0083 ,  H04L63/145 ,  H04L67/06

Abstract: Provided are a method and a system for transmitting multiple data, in which the method includes receiving a plurality of transmission files for transmission from a transmission device of the first network to a reception device of the second network, and temporarily storing the received files, generating flexible packets by dividing each of the plurality of transmission files by a flexible packet length determined according to size of the files, in which a transmission file in a size smaller than the flexible packet length among the plurality of transmission files is generated as one flexible packet without being divided, loading the flexible packets into a plurality of flexible frames based on a corresponding transmission file priority according to a maximum data transmission size, and transmitting the plurality of flexible frames to the second network.

公开(公告)号：US20230286645A1

公开(公告)日：2023-09-14

申请号：US18061042

申请日：2022-12-02

Applicant: Korea Aerospace Research Institute

Inventor： Youngshin Kang ,  Bumjin Park ,  Seongwook Choi ,  Yushin Kim ,  Jongmin Bae ,  Joowon Choi ,  Sungho Chang

IPC: B64C13/04 ,  B64D43/00

CPC classification number: B64C13/0421 ,  B64D43/00 ,  B64C29/0008

Abstract: The present invention relates to a control input device applicable to an eVTOL aircraft, which is an electric-powered vertical take-off and landing aircraft, and more particularly, to an aircraft control input device that may replace a cyclic control stick, a tail rotor control pedal, and a collective control stick used for flight control of a conventional aircraft, which is simpler in configuration and easier to operate than conventional control devices and may improve pilot convenience and stability of flight operation through simple and accurate flight manipulation, and a command input method using the same.

公开(公告)号：US20230176234A1

公开(公告)日：2023-06-08

申请号：US17987979

申请日：2022-11-16

Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

Inventor： Jin Hyung PARK

IPC: G01S19/48 ,  G01S19/28 ,  G01S19/25

CPC classification number: G01S19/485 ,  G01S19/28 ,  G01S19/256

Abstract: Provided is a method for matching telemetry packets for satellite image processing, which includes receiving a plurality of image data telemetry packets and a plurality of auxiliary data telemetry packets, the plurality of image data telemetry packets include satellite image data photographed from a satellite, but do not include satellite image sequence information, and the plurality of auxiliary data telemetry packets include satellite image sequence information, correcting a packet time of either the plurality of image data telemetry packets or the plurality of auxiliary data telemetry packets by using a predetermined mathematical formula, and matching the plurality of image data telemetry packets and the plurality of auxiliary data telemetry packets corresponding to the same satellite image sequence by using the packet time.

公开(公告)号：US20230162101A1

公开(公告)日：2023-05-25

申请号：US17986354

申请日：2022-11-14

Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

Inventor： Myeong Sook JEONG ,  Yeon Ju EUN ,  Dae Keun JEON

IPC: G06Q10/047 ,  G06Q10/0631

CPC classification number: G06Q10/047 ,  G06Q10/06311

Abstract: A method and device for predicting a multi-step ahead taxi-out time using time-series forecasting are provided. The method of predicting a multi-step ahead taxi-out time using time-series forecasting may include calculating an average taxi-out time that is time-invariant for an aircraft, calculating an additional taxi-out time that is time-variant for the aircraft, and predicting a multi-step ahead taxi-out time for the aircraft using the average taxi-out time and the additional taxi-out time.

公开(公告)号：US20230159184A1

公开(公告)日：2023-05-25

申请号：US17991338

申请日：2022-11-21

Applicant: Korea Aerospace Research Institute

Inventor： Sung Yug KIM

IPC: B64F1/22 ,  B64C39/02

CPC classification number: B64F1/22 ,  B64C39/024 ,  B64C2201/027 ,  B64C29/0008

Abstract: A drone docking/landing system includes: a docking portion having a shape of any one of a polygonal pyramid, a truncated polygonal pyramid, a cone, and a truncated cone and being capable of docking a drone; and a landing portion mounted at a lower portion of the drone, having a lower portion that is open, into which the docking portion is inserted, and having an empty inner space, wherein the landing portion has a shape of any one of a polygonal pyramid, a truncated polygonal pyramid, a cone, and a truncated cone, wherein the shape corresponds to the shape of the docking portion so that the docking portion is inserted into the landing portion.

公开(公告)号：US20230132923A1

公开(公告)日：2023-05-04

申请号：US17597187

申请日：2020-11-24

Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

Inventor： Jung Un PARK ,  Ja-Chun KOO ,  Sang-Kyoo HAN ,  Ji Hun BAE ,  Nayoung LEE ,  Jae Dong CHOI

IPC: H02M3/158 ,  H02M1/08 ,  H02J7/00 ,  H03K17/687 ,  H03K17/06

Abstract: According to the present invention, an output inductor, rather than being composed of a separate inductor element, is magnetically coupled to a third inductor and a fourth inductor constituting a second transformer. Thus, compared to the case in which the output inductor is composed of the separate inductor element independently of the third inductor and the fourth inductor, the cost as well as the volume of the DC-DC conversion device can be reduced.

公开(公告)号：US11629670B2

公开(公告)日：2023-04-18

申请号：US17516465

申请日：2021-11-01

Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

Inventor： Keum Oh Lee ,  Byoung Jik Lim ,  Kee Joo Lee

IPC: F02K9/52 ,  F02K9/95 ,  F02K9/60 ,  B33Y80/00

Abstract: An injection device for injecting an oxidizer for a liquid rocket includes a housing, a plate disposed inside the housing and having an injection hole to eject an oxidizer, a duct disposed above the plate to guide the oxidizer, and a manifold with one end connected to the injection hole of the plate and the other end connected to the duct, wherein the oxidizer may be distributed to the injection hole at an equal flow rate.