Abstract: In a primary member for a single-sided linear induction motor having a core member and a plurality of multiturn coils connected to one another in a plurality of phase groups, each phase group being arranged in a plurality of longitudinally spaced pole groups, each consisting of a plurality of coils, the coils of each pole group being connected to each other at a side of the core, the improvement wherein; the coils of each phase group are connected to one another at connection points arranged on the same side of the core, the connection points of one pole group being disposed at the opposite side of the core to that at which the connection points of at least one adjacent pole group are located.

Abstract: A module exchange system including a module manipulator mechanism for use in manipulating modules between a module storage magazine and a satellite. The manipulator includes an adjustable terminal device which is capable of accommodating satellite modules of different geometrical proportions and a latching probe mechanism for releasably latching the modules with respect to the satellite and the module manipulator. The module manipulator is designed for movement along three mutually normal axes and is rotatable about one axis. The adjustable terminal device comprises two pairs of mutually crossed angularly adjustable arms having fingers at their outer ends for securing the modules, the arms being mutually angularly adjustable with respect to one another and telescopic so that the positions of the fingers may be adjusted to be received by modules of different proportions.