It's called the auxiliary power unit, and it's the smallest engine on the plane. But that doesn't mean it serves a small purpose. It provides the necessary power to start the plane's engines and ...

An auxiliary power unit (APU) is a small, self-contained power source that is used in land and rail vehicles as well as in ...

Jet is set to permanently roll out Project APU-ZERO at its Milan Malpensa base following a successful trial at the northern ...

The 184-foot-tall (56-meter) rocket lifted off from Kourou, French Guiana, at 11:24 am EST (16:24 UTC). Twin solid-fueled boosters and a hydrogen-fueled core stage engine powered the Ariane 6 through ...

Transtex has introduced its next-generation electric auxiliary power unit to boost energy efficiency ... as it supports full hotel loads without engine idling. The development of this new product ...

Blended-wing-body (BWB) aircraft developer JetZero has secured a propulsion systems agreement with RTX covering its ...

Juan de Bedout, RTX's Chief Technology Officer, stated: "The aerospace industry is focused on efforts to reduce operational ...

RTX (NYSE: RTX) has entered into three agreements with JetZero, the developer of a novel blended wing body aircraft, to provide key systems for the airframer's full-scale demonstrator. Pratt & Whitney ...

The JetZero airfoil concept will be realized by 2027, including Pratt & Whitney propulsion and power units, and Collins ...

But there's another engine hidden int he back of the tail. Called the auxiliary power unit (APU) It's the smallest engine on a plane. But you could say it's the most important one of all.