Kenneth Bullock: The Man Who Helped Design The de Havilland Canada DHC-6 Twi

In 1956, the president of Pratt & Whitney Canada, Ronald Riley, asked engineering manager Dick Guthrie to put together a team to design a small gas turbine engine. While the demand for the company’s Wasp radial engine was good, Riley’s goal was to make Pratt & Whitney Canada’s leading engine company by focusing on a small gas turbine engine.