TURBOPROP ENGINE ASSEMBLY WITH COMBINED ENGINE AND COOLING EXHAUST

摘要

A turboprop engine assembly (10) for an aircraft, including an internal combustion engine (12) having a liquid coolant system, an air duct (70) in fluid communication with an environment of the aircraft, a heat exchanger (66) received within the air duct (70) having coolant passages (66a) in fluid communication with the liquid coolant system and air passages (66b) in fluid communication with the air duct (70), and an exhaust duct (80) in fluid communication with an exhaust of the internal combustion engine (12). The exhaust duct (80) has an outlet (82) positioned within the air duct (70) downstream of the heat exchanger (66) and upstream of an outlet (72) of the air duct (70), the outlet (82) of the exhaust duct (80) spaced inwardly from a peripheral wall (70') of the air duct (70). In use, a flow of cooling air surrounds a flow of exhaust gases.