Fuel Flow Transducers: The origin, advantage and current status

It was 1972 when that time leading U.S. avionics manufacturer Aerosonics began testing fuel flow transducers for use in general aviation aircraft. It was the first time someone took transducers seriously and tried to make one capable enough to withstand the vibrations of aircraft engines. It was important that it meets FAA regulations about blocked-rotor pressure drop without exceeding the 1.5 times the pressure drop of a spinning rotor. The chief advantage of a fuel flow transducer is that a blocked rotor does not affect the pressure drop in fuel-flow transducers. This imparts superior accuracy and an extraordinary repe ... Read more »