An auxiliary power unit (10) for an aircraft, including an internal combustion engine (12) having a liquid coolant system, a generator (64) drivingly engaged to the internal combustion engine (12) and having a liquid coolant system distinct from the liquid coolant system of the internal combustion engine (12), a first heat exchanger (66) in fluid communication with the liquid coolant system of the internal combustion engine (12), a second heat exchanger (68) in fluid communication with the liquid coolant system of the generator (64), an exhaust duct (70) in fluid communication with air passages (66b, 68b) of the heat exchangers (66, 68), and a fan (78) received in the exhaust duct (70) and rotatable by the internal combustion engine (12) for driving a cooling air flow through the air passages (66b, 68b). The liquid coolant system of the engine (12) may be distinct from fuel and lubricating systems of the auxiliary power unit (10).
Auxiliary power unit with combined cooling of generator
Hilfstriebwerk mit kombinierter Kühlung eines Generators
Groupe auxiliaire de puissance doté d'un générateur de refroidissement combiné
2018-12-12
Patent
Electronic Resource
English
IPC: | F02C Gasturbinenanlagen , GAS-TURBINE PLANTS / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F01C Rotationskolben- oder Schwenkkolbenmaschinen, Rotationskolben- oder Schwenkkolbenkraftmaschinen , ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES / F02K JET-PROPULSION PLANTS , Strahltriebwerke |