The primary role for the Auxiliary power unit is to kickstart an aircraft's main engine. The most powerful jet engines you can find on commercial planes require a high rotational speed to become ...

The traditional role of the auxiliary power unit (APU) has been to provide electrical power and pneumatic supply for air conditioning and main-engine starting when aircraft are on the tarmac. That ...

A Lockheed Martin Sikorsky-Boeing team announced on 25 April that it had selected Honeywell's GTCP 36-150 auxiliary power unit (APU), main engine generator, and APU ...

For the Airbus A350, Honeywell's HGT1700 APU will be its largest unit to date, delivering an equivalent power of 1,300kW (1,700shp) but cutting fuel burn and nitrogen oxide emissions with a new ...

Although the Aurora-developed XV-24A project was canceled in 2018, Honeywell continued work on the generator, which formed the design basis of the integrated 200-kW units unveiled with the HTS900 ...

The first version of the e-APU will be capable of generating 15kW of electrical power at 28VDC for the starter generator and 45kW of auxiliary power at 115VAC/400Hz. Ultimately, it should be able ...

The APU, or auxiliary power unit aboard an aircraft has a specific purpose, but also a pretty big drawback. Here's what you need to know about it.