Honeywell International HON has introduced an upgrade for its 131-9B auxiliary power unit (APU) for Boeing 737 aircraft to reduce fuel consumption and carbon dioxide emissions. The new High-Efficiency ...

Auxiliary power units (APUs) do their dull and dirty work hidden away in aircraft tailcone compartments, unlike their turbine engine brethren connected to the wings or empennage. On occasion however, ...

Credit: Lufthansa Technik Encased in the tail cone of commercial, business, and military aircraft, auxiliary power units enable cabin environmental control system operation without relying on ground ...

Delta Air Lines is replacing power units on more than 300 of its Airbus jets in an effort to stem cases in which toxic fumes have leaked into the air supply and led to health and safety risks for ...

Hamilton Sundstrand’s APU, designed solely to generate electrical rather than pneumatic power for the 787, is gearing up for flight tests in April Hamilton Sundstrand has dispatched an APS5000 ...

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 modern jet engine is a complex mechanical wonder. However, these aren't engines that will just roar into action with the turn of a key or the press of a button. Often, turbine engines will need ...