Abstract: Control surfaces in an aircraft are biparted, and one portion is acted upon by a mechanical signal transmission system in a redundant manner, the other one by an electrical signal transmission system normally operating in parallel; different construction versions and embodiments are described.
Abstract: The invention relates to a measuring device for determining cracks. Light conductive fibers or film are provided as crack detectors in this measuring device which fibers or films are applied directly upon the construction parts. Light is coupled into these light conductive fibers by means of a coupler and the passage of light is monitored at the free end. A fiber fracture serves as irreversible crack indication.
Abstract: A pin extends from the floor near a cargo door and pallets or containers are provided with an attachment which includes a releasable frame with a hinged spring-loaded plate having a bore and runoff surfaces. The bore traps the pin and forces the pallet or container to turn.