公开(公告)号：US20230122828A1

公开(公告)日：2023-04-20

申请号：US17924094

申请日：2021-05-10

Applicant: AIRBUS DEFENCE AND SPACE SAS

Inventor： Philippe LAURENS

IPC: B64G1/24 ,  B64G1/40

Abstract: A method (50) for orbit control of a satellite (10) in Earth orbit and for desaturation of an angular momentum storage device of the satellite, the satellite (10) including an articulated arm (21) suitable for moving a propulsion unit (31) within a motion volume included in a half-space delimited by an orbital plane when the satellite is in a mission attitude, the method (50) including a single-arm control mode using only the propulsion unit (31) carried by the articulated arm (21), the single-arm control mode using a maneuvering plan including only thrust maneuvers to be executed when the satellite (10) is located within an angular range of at most 180° centered on a target node in the orbit of the satellite (10), including two thrust maneuvers to be performed respectively upstream and downstream of the target node.

公开(公告)号：US20230234723A1

公开(公告)日：2023-07-27

申请号：US18013199

申请日：2021-06-28

Applicant: AIRBUS DEFENCE AND SPACE SAS

Inventor： Philippe LAURENS

IPC: B64G1/24 ,  B64G1/40 ,  B64G1/26 ,  G05D1/10

CPC classification number: B64G1/242 ,  B64G1/40 ,  B64G1/26 ,  B64G1/244 ,  G05D1/101

Abstract: A method for orbit control of a satellite in orbit around the Earth and for desaturation of an angular momentum storage device of satellite is disclosed having two articulated arms each supporting a propulsion unit. The method includes determining a maneuver plan having at least two thrust maneuvers, a first thrust maneuver to be executed using the propulsion unit of one of the articulated arms and a second thrust maneuver to be executed using the propulsion unit of the other articulated arm, controlling the articulated arms and the propulsion units according to the maneuver plan, at least one of the first and second thrust maneuvers being a thrust maneuver referred to as discontinuous, composed of at least two separate consecutive thrust sub-maneuvers.

公开(公告)号：US20220250773A1

公开(公告)日：2022-08-11

申请号：US17598201

申请日：2020-03-17

Applicant: AIRBUS DEFENCE AND SPACE SAS

Inventor： Philippe LAURENS ,  Jeremy LESPRIER

IPC: B64G1/28 ,  B64G1/10 ,  B64G1/36 ,  B64G1/24 ,  G01C21/24

Abstract: A device for determining an attitude of a satellite is disclosed, the satellite having an attitude control system comprising a gyroscopic actuator including a flywheel mounted so as to be rotatable around an axis of rotation and carried by a gimbal articulated to rotate around an axis of rotation. The device includes an attitude sensor configured to measure the attitude of the satellite, a position sensor configured to measure the angular position of the gimbal around its axis of rotation, a speed sensor configured to measure the rotational speed of the flywheel, and a processing circuit configured to determine the attitude of the satellite by using the measurement of the angular position of the gimbal, the measurement of the rotational speed of the flywheel, and the measurement of the attitude of the satellite.