In 1979, as chief of Large Turboprop Compressor Aerodynamics, Tsukasa entered uncharted territory because of the three-shaft engine of the PW100. One of the design challenges for Tsukasa and his team was stage matching: Two of the three shafts (the third drives the propeller) have a compressor and a turbine; the shafts independently rotate but their impellers need to run simultaneously at peak efficiency to maximize engine performance. The team was successful and went on designing more innovative features for the PW100!
Today, Tsukasa remains part of the team as a consultant and his knowledge continues to inspire.
The PW100 is the engine of choice it is today thanks, in part, to Tsukasa Yoshinaka who was a member of the Pratt & Whitney Canada (P&WC) team for 27 years prior to his retirement.
Committed and dependable people like him have helped build the P&WC traditions of innovation and excellence. Thank you, Tsukasa.
Over the course of 30 years, a great many people at P&WC have contributed to the immense success of the PW100. To celebrate the engine that revolutionized the global regional market, we issued an appeal and asked for the names of those who have left their mark on its design, build and evolution.
We received over 150 names! As planned, we picked 30 names for the 30th anniversary of a December day in 1984, when two P&WC PW120A engines powered the first commercial flight of a Dash 8-100 from de Havilland Aircraft, soaring to the sound of bagpipes from Sault Ste. Marie to Kapuskasing, Timmins and Sudbury in Ontario, Canada.