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Boeing has designed and built an unmanned experimental Autonomously Piloted Vehicle called Condor, which has successfully flown. The flight control surfaces are operated using four basic types of electromechanical actuators (EMAs). A common controller design is used to operate all EMAs. This airplane utilizes only electrical secondary power to operate all the subsystems in the vehicle. So it is truly an “All Electric” airplane. This paper describes the Condor flight control actuation, propulsion control actuation, and electrical power generation and distribution systems. Each propulsion system is controlled by a single full authority digital Control Electronics Unit (CEU) with electrical actuators. A separate electronic Ignition Control Unit (ICU) drives the spark plugs, processes camshaft position sensors, and sends speed signals to the CEU and the mission computer.

A digital computer was used to control an augmented turbofan engine and its inlet on a supersonic fighter. A brief summary of the system configuration and performance provides the background for remarks on the development of the system. Throughout the program a free flowing interchange of ideas, design, and test data was maintained among three major contractors and three Government facilities, aiding in the integration process. Particular emphasis is placed on: The role of simulation in system development, Software development and configuration control, Adaptation of the propulsion control system to a series of test facilities. Based on the experience acquired in the successful completion of the program, conclusions relevant to future engine/airframe development are drawn -- digital electronic engine controls are practical and essential for the fully integrated aircraft of the future.