The circuit of the present invention is able to detect and identify the position of several contactors.Each contactor (1) is mounted in series with a resistor (2). The first contacts (A.sub.N) are interconnected. The same applies for the second contacts (B.sub.N) and the third points (C.
A control system for hydraulically controlling variable engine structures is disclosed in which the control system utilizes hydraulic fluid identical to that used by the aircraft hydraulic control circuit. A high pressure hydraulic pump, driven by the aircraft engine, may be intercon
