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公开(公告)号:WO2023285432A1
公开(公告)日:2023-01-19
申请号:PCT/EP2022/069402
申请日:2022-07-12
申请人: ICEYE OY
发明人: MUFF, Darren , IGNATENKO, Vladimir
摘要: A satellite (140) for operation in orbit around the earth comprises an ADCS (131, figure 1) configured for mechanically steering the satellite in the azimuth direction to prolong a dwell time (1105), during which a selected target is visible from the satellite, as the satellite orbits over the target. A processor at the ground station may be configured to process raw SAR data from any of the satellites described here. The raw SAR data may be processed in a number of ways to provide image information including but not limited to forming multilook images, compiling video sequences and colour coding images.
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公开(公告)号:WO2021230986A1
公开(公告)日:2021-11-18
申请号:PCT/US2021/024729
申请日:2021-03-29
申请人: MAXAR SPACE LLC
发明人: TURNER, Andrew E.
IPC分类号: B64G1/24 , B64G1/44 , B64G1/28 , B64G1/36 , B64G1/242 , B64G1/244 , B64G1/283 , B64G1/361 , B64G1/40 , B64G1/443
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 relative to the orbital plane of the spacecraft and when the spacecraft is not eclipsed by a body it is orbiting. 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.
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公开(公告)号:WO2021194051A1
公开(公告)日:2021-09-30
申请号:PCT/KR2020/018340
申请日:2020-12-15
申请人: 한국항공우주연구원
IPC分类号: B64G1/28 , B64G1/10 , B64G1/283 , B64G2700/00
摘要: 본 발명은 오프셋을 적용한 인공위성 반작용휠의 모멘텀 덤프 방법에 관한 것이다. 본 발명의 목적은, 원래 설계된 모멘텀 덤프에 대하여 적절한 오프셋을 적용함으로써 인공위성을 보다 안전하고 효율적으로 운용할 수 있도록 하는, 오프셋을 적용한 인공위성 반작용휠의 모멘텀 덤프 방법을 제공함에 있다.
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公开(公告)号:WO2021011587A1
公开(公告)日:2021-01-21
申请号:PCT/US2020/042030
申请日:2020-07-15
申请人: SKEYEON, INC.
摘要: Disclosed are systems and method for satellite attitude control, which includes two or more individual thruster unit (ITU) arranged at various locations about a body of the satellite, with each ITU oriented to provide thrust in a unique direction when fired. Additionally or alternatively, each ITU configured for independently controlled firing. In disclosed examples, one or more stabilization surfaces to compensate for changes in altitude of the satellite.
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公开(公告)号:WO2017025778A1
公开(公告)日:2017-02-16
申请号:PCT/IB2015/056143
申请日:2015-08-12
IPC分类号: B64G1/28
CPC分类号: B64G1/283
摘要: This disclosure relates to a satellite attitude control apparatus, comprising a spherical inertial body (1), which is arranged to be rotated in space in a desired rotational mode, one or more rotational feedback sensors. The apparatus further comprises a set of supports (3) and/or actuators (2), whereas one or more actuator is used to create rotational momentum to the spherical inertial body through friction. A set of three or more actuators and supports is used in order to keep the inertial body in place. Three or more supporting elements (supports and actuators) are used in combination with magnetic attraction or four or more supporting elements are used in case magnetic attraction is not in use. Supports can be passive or semi-active in order to reduce friction.
摘要翻译: 本公开涉及一种卫星姿态控制装置,其包括球形惯性体(1),该球形惯性体(1)被布置为以期望的旋转模式在空间中旋转,一个或多个旋转反馈传感器。 该装置还包括一组支撑件(3)和/或致动器(2),而一个或多个致动器用于通过摩擦向球形惯性体产生旋转动量。 使用一组三个或更多的致动器和支撑件以便将惯性体保持在适当位置。 三个或更多个支撑元件(支撑和致动器)与磁吸引力结合使用,或者在不使用磁吸引的情况下使用四个或更多个支撑元件。 支撑可以是被动的或半主动的,以减少摩擦。
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公开(公告)号:WO2015097672A3
公开(公告)日:2015-10-29
申请号:PCT/IB2014067282
申请日:2014-12-23
发明人: ANANIA MARCO , CASCONE DOMENICO
CPC分类号: B64G1/286 , B64G1/10 , G01C19/065 , G05D1/0883
摘要: The present invention relates, in general, to attitude control and, in particular, to control of the attitude of a space platform, conveniently of a satellite and/or a spacecraft. In detail, an aspect of the present invention concerns the use, in an attitude control system (100), of several Control Moment Gyroscopes (3,41,42,43,44,61,62,63,64) with limited gimbal revolutions. Moreover, another aspect of the present invention concerns an improved logic for controlling a Control Moment Gyroscope assembly (4,6,120) of an attitude control system (100).
摘要翻译: 本发明一般涉及姿态控制,特别是涉及卫星和/或航天器方便的空间平台姿态的控制。 具体地说,本发明的一个方面涉及在姿态控制系统(100)中使用几个具有有限的万向架转数的控制力矩陀螺仪(3,41,42,43,44,61,62,63,64) 。 此外,本发明的另一方面涉及用于控制姿态控制系统(100)的控制力矩陀螺仪组件(4,6,120)的改进的逻辑。
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公开(公告)号:WO2013124225A1
公开(公告)日:2013-08-29
申请号:PCT/EP2013/053101
申请日:2013-02-15
申请人: CENTRE NATIONAL D'ETUDES SPATIALES , INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSE , CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S)
CPC分类号: B64G1/283 , B64G1/28 , B64G1/285 , B64G1/286 , B64G1/32 , G01C19/12 , G01C19/14 , H02K44/085 , H02K44/16 , H02K2213/03 , Y10T74/125
摘要: Une roue magnétohydrodynamique (2) d'actionnement inertiel comprend un anneau fluidique (3) torique rempli d'un liquide conducteur, au moins une zone effective (24, 26, 28) de mise en mouvement du liquide, et au moins une pompe magnétohydrodynamique (4, 6, 8). Le rapport de la distance d'éloignement d'un élément de conduction magnétique quelconque (24, 26, 28) de l'entrefer d'une quelconque pompe électromagnétique (4, 6, 8) sur la taille interne de l'anneau fluidique (3) est supérieur ou égal à 0,5 et l'anneau fluidique (3) comprend au moins deux zones effectives distinctes (24, 26), de mise en mouvement du liquide conducteur espacées angulairement d'au moins 120 degrés.
摘要翻译: 本发明涉及一种磁流体动力学惯性致动轮(2),其包括填充有导电液体的环形流体环(3),至少一个用于使液体运动的有效区域(24,26,28),和至少一个 磁流体动力泵(4,6,8)。 任何导电元件(24,26,28)与流体环(3)的内周上的任何电磁泵(4,6,8)的气隙之间的距离的比率大于或等于 0.5,并且流体环(3)包括用于设置导电液体运动的至少两个分开的有效区域(24,26),所述有效区域角度间隔开至少120度。
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公开(公告)号:WO2012092933A1
公开(公告)日:2012-07-12
申请号:PCT/DK2012/050009
申请日:2012-01-06
摘要: The present invention relates to a method and a system to facilitate deorbiting of satellites from Low Earth Orbit (LEO). The Self - deployable Deorbiting Space Structure (SDSS) (18) of the invention attached to a satellite (20) is deformed into a stressed configuration so as to store strain energy on Earth. The strain energy is released in space producing a rapid deployment of the SDSS which increase the surface area of the satellite and in turn increases the aerodynamic drag colliding with air molecules in the residual atmosphere of Earth inducing variations in the satellite orbit.
摘要翻译: 本发明涉及一种促进低地球轨道(LEO)卫星脱轨的方法和系统。 附着于卫星(20)的本发明的自展开式解吸空间结构(SDSS)(18)变形为应力结构,以便将应变能储存在地球上。 应变能在空间中释放,产生SDSS的快速部署,其增加卫星的表面积,并且反过来增加与地球残余气氛中的空气分子相撞的空气动力学阻力,从而引起卫星轨道的变化。
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公开(公告)号:WO2011100482A2
公开(公告)日:2011-08-18
申请号:PCT/US2011/024413
申请日:2011-02-10
IPC分类号: F16F15/22 , B60G21/08 , B64C27/00 , B64G1/28 , B62D137/00
摘要: A combination motorized and propelled apparatus and moment imparting device is provided to improve the stability of the apparatus in motion with regard to pitch, roll and yaw. The moment imparting device uses one or more rotational members rotating around one or more axes to create a net rotational moment force around a desired axis of rotation. The moment imparting device is in communication with the motorized apparatus to translate that moment force to the motorized apparatus to improve stability or induce a desired rotation.
摘要翻译: 提供组合的电动和推进装置和力矩赋予装置,以提高装置在俯仰,滚动和偏转方面的运动的稳定性。 力矩传递装置使用围绕一个或多个轴线旋转的一个或多个旋转构件以围绕期望的旋转轴线产生净旋转力矩力。 施加力矩的装置与电动装置连通,以将该力矩转化到机动装置以提高稳定性或引起期望的旋转。
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公开(公告)号:WO2008001415A1
公开(公告)日:2008-01-03
申请号:PCT/JP2006/312691
申请日:2006-06-26
申请人: 鈴木 一義
发明人: 鈴木 一義
IPC分类号: B64G1/28
CPC分类号: B64G1/409 , F03G7/10 , F03H99/00 , G01C21/24 , Y10T74/1225
摘要: 燃焼生成物の反作用を用いることなく推進力を得ることができる推進力発生装置及びそれを利用した航行体を提供する。推進力発生装置は、回転軸線と、回転軸線のまわりに対称的に配置された複数のコマと、コマを回転軸線まわりに回転させるモータ装置を有する。コマの自転軸線は、回転軸線の半径方向に沿って配置されている。「コマ」は、地面から垂直に起き上がろうとする力、即ち偶力と呼ばれる力を発生する。この偶力を利用することにより、推進力を発生する。
摘要翻译: 能够产生推力而不使用燃烧产物的反作用力的推力发生器和利用其的导航体。 推力发生器具有旋转轴线,围绕旋转轴对称布置的多个顶部,以及用于使顶部围绕旋转轴线旋转的马达。 顶部的旋转轴线沿着旋转轴的径向方向布置。 “顶部”产生一个垂直于地面上升的力,即所谓的一对力。 推力是通过利用这对力来产生的。
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