大 Question /l What forces must be transmitted between satellites to allow for all relative degrees of freedom to be controlled? In 2-D, N spacecraft have 3N DOFS, but we are only interested in controlling(and are able to control)3N-2 (no translation of the center of mass For 2 spacecraft, that's a total of 4 All except case(4 )can be generated using axial forces(such as electrostatic monopoles)and torques provided by reaction wheels Complete instantaneous control requires a transverse force which can be provided using either electrostatic or electromagnetic dipoles DIl EMFF Final review ug.29,2003DII EMFF Final Review Aug. 29, 2003 Question III: Question III: • What forces must be transmitted between satellites to allow for all relative degrees of freedom to be controlled? – In 2-D, N spacecraft have 3N DOFs, but we are only interested in controlling (and are able to control) 3N-2 (no translation of the center of mass) – For 2 spacecraft, that’s a total of 4: • All except case (4) can be generated using axial forces (such as electrostatic monopoles) and torques provided by reaction wheels • Complete instantaneous control requires a transverse force, which can be provided using either electrostatic or electromagnetic dipoles 1 2 3 4