Abstract: An aircraft has an aircraft propulsor and/or an aircraft propulsor drive. The aircraft propulsor and/or an aircraft propulsor drive acts as a waste heat source. The aircraft has a metal-air fuel cell. The aircraft has a waste heat transfer system configured to thermally couple the metal-air fuel cell and a waste heat source. The aircraft includes a control system configured to operate the waste heat transfer system to selectively transfer waste heat from the waste heat source to the metal-air fuel cell.

Abstract: An aircraft having a fuselage with a nose and a flat tail at opposite ends and a pair of wings extending therefrom. A pair of nacelles are detachably connected to the top of respective ones of the wings to be spaced from the fuselage to establish an air flow space therebetween. Each wing-mounted nacelle includes a plurality of fans, a corresponding plurality of electric motors to drive the fans, and dividers that separate the fans from one another. Each wing-mounted nacelle also includes a pair of rotatable air inlet slats at an air intake end and a pair of rotatable air exhaust flaps at an air exhaust end that are rotated relative to one another to control horizontal propulsive thrust, thrust vectoring and thrust reversing of the aircraft. A third nacelle is mounted on top of the flat tail of the fuselage between a pair of horizontal turbo generators.