MP944

A Central Air Data Computer computes altitude, vertical speed, air speed, and mach number from sensor inputs such as pitot and static pressure and temperature. Early CADC systems were electromechanical computers, such as in the F-111. From 1968 to 1970, the first digital CADC was developed for the F-14. In the 1980s, the Standard Central Air Data Computer was developed to retrofit U.S. Air Force and U.S. Navy aircraft.

The F-14 CADC was a ground-breaking integrated flight control system developed by Garrett AiResearch. It was used in early versions of the US Navy's F-14 Tomcat fighter. It is notable for its early use of AiResearch's custom-designed MOS-based LSI microprocessor chipset, the MP944.

The CADC was designed and built at Garrett AiResearch by a team led by Steve Geller and Ray Holt, and supported by the startup American Microsystems. Design work started in 1968 and was completed in June 1970, beating out a number of electromechanical systems that had also been designed for the F-14.

The CADC consisted of an A-to-D converter, several quartz pressure sensors, and the MOS-based microprocessor. Inputs to the system included the primary flight controls, a number of switches, static and dynamic air pressure (for calculating stall points and aircraft speed) and a temperature gauge. The outputs controlled the primary flight controls, wing sweep, the F-14's leading edge "glove", and the flaps.

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