Abstract: An aircraft comprises several elements. A throttle body is adapted to regulate a rate of air flow. An electronic control unit, in turn, is in signal communication with one or more sensors, and comprises a data processor in signal communication with a memory. A first fuel delivery system is operative to direct a first fuel from a first fuel tank to the plurality of cylinders at a rate determined at least in part by a condition of the throttle body. A second fuel delivery system is operative to direct a second fuel from a second fuel tank to the plurality of cylinders at a rate determined at least in part by the electronic control unit in response to signals from the one or more sensors. One or more fuel selection controls allow a pilot of the aircraft to select between powering the aircraft with the first fuel delivery system and the second fuel delivery system.

Abstract: An aircraft comprises several elements. A throttle body is adapted to regulate a rate of air flow. An electronic control unit, in turn, is in signal communication with one or more sensors, and comprises a data processor in signal communication with a memory. A first fuel delivery system is operative to direct a first fuel from a first fuel tank to the plurality of cylinders at a rate determined at least in part by a condition of the throttle body. A second fuel delivery system is operative to direct a second fuel from a second fuel tank to the plurality of cylinders at a rate determined at least in part by the electronic control unit in response to signals from the one or more sensors. One or more fuel selection controls allow a pilot of the aircraft to select between powering the aircraft with the first fuel delivery system and the second fuel delivery system.