DAYSIDE-ONLY ROLL STEERING
    192.
    发明申请

    公开(公告)号:US20210354857A1

    公开(公告)日:2021-11-18

    申请号:US17076444

    申请日:2020-10-21

    申请人: MAXAR SPACE LLC

    发明人: Andrew E. Turner

    摘要: A method of roll steering of a spacecraft to align an aspect of the spacecraft, such as the surface of solar arrays carried by the spacecraft, to the sun, is described. The roll steering occurs only when the sun is at an angle (β) relative to the orbital plane of the spacecraft and when the spacecraft is not eclipsed by a body it is orbiting. This dayside-only roll steering of the spacecraft increases the power efficiency of the spacecraft. A spacecraft may include a controller which causes an attitude control subsystem to steer the spacecraft about a roll axis to position the surface of the solar array such that an axis normal to the surface of the solar array is aligned with the direction to a sun when the sun is visible to the spacecraft, and maintain a fixed orientation of the spacecraft about the roll axis when the sun is not visible to the spacecraft.

    System and method for rotating mass attitude control

    公开(公告)号:US11174046B2

    公开(公告)日:2021-11-16

    申请号:US16989869

    申请日:2020-08-10

    申请人: Larry D. Sinclair

    发明人: Larry D. Sinclair

    IPC分类号: B64G1/28 B64G1/42 B64G1/44

    摘要: The disclosure relates to a method and apparatus of rotating mass attitude control. The method and apparatus entails rotating a mass to generate thrust. Varying the speed and direction of rotation provides some control of the magnitude and direction of the thrust generated. The method and apparatus of the invention pertinent to an attitude control system for spacecrafts or astromotive vehicles under conditions of zero to low gravity and atmosphere.

    Space Mission Energy Management Architecture

    公开(公告)号:US20210197989A1

    公开(公告)日:2021-07-01

    申请号:US16773880

    申请日:2020-01-27

    申请人: MOMENTUS INC.

    IPC分类号: B64G1/26 B64G1/40 B64G1/44

    摘要: A spacecraft propulsion system comprises two thrusters, each operating in accordance to a corresponding propulsion technique. A controller is configured to direct collected solar energy to heat a propellant for consumption in one of the two thrusters, or to generate electric energy for the other one of the two thrusters.

    Cubesat antenna system
    200.
    发明授权

    公开(公告)号:US11005165B2

    公开(公告)日:2021-05-11

    申请号:US15938908

    申请日:2018-03-28

    IPC分类号: H01Q1/28 H01Q19/10 B64G1/44

    摘要: A system and method of using a transceiver antenna formed on a fixed outer panel of a cubesat includes electrically coupling an RF feed to a first edge of the outer panel and electrically coupling an RF return to a second edge of the outer panel, the second edge being opposite from the first edge. The RF feed and the RF return being disposed approximately one half a height of the outer panel. An RF distribution plane is electrically coupled to the RF feed and the RF return by substantially equal length circuits. A communication system is electrically coupled to the RF distribution plane. The transceiver antenna does not require deployment and thus improves reliability.