HOW A TURBOPROP ENGINE WORKS
Turboprop engines combine the reliability of jets, with the efficiency of propeller driven aircraft at low to mid altitudes. Found on anything from a 50+ seat passenger aircraft to a single pilot cropduster, turboprop engines are perfect for safe, efficient regional travel. This is how they work…
Of all turboprop engines, one of the most popular is the Pratt & Whitney PT6. More than 41,000 PT6A engines have been produced since the family entered service in the 1960s, accumulating over 335 million flying hours. The 69 PT6 models range in power from 500 shaft-horsepower (SHP) to over 2,000 SHP. While not all turboprop engines work exactly like the PT6, they all follow the same basic concepts. Because of its widespread popularity, it’s a great example to focus on.
Unlike turbofan or turbojet aircraft, air moves through turboprops like the PT6 by reverse flow.