Abstract: An e.g. fluid powered linear actuator is provided with a helical orientation surface in a fixed angular position relative to a first component; and a follower in a fixed angular position relative to a second component. When the first and second components are moved towards one another as the actuator is retracted, the follower engages and moves along the helical orientation surface to rotate the first and second components to a predetermined relative angular position.
Abstract: Arming apparatus is installable between twin arming units of an ejector release unit in a military aircraft, and a single fuzing unit of a store. The arming apparatus comprises sequentially breakable links which ensure reliable ejection of the store in an armed state, or jettisoning of the store in an unarmed state, as desired.