Variable blade-incidence rotorlifts commercial gyroplane.

From: Design News | Date: March 6, 2000| Author: DeMeis, Rick | Copyright information

Salt Lake City--Ever try to design something without legacy data on which to base it? That was the challenge facing Mark Woolsey, chief engineer for Groen Brothers Aviation, in developing the company's Hawk 4 commercial gyroplane. Add to that a two-year deadline to first flight (last year) and you can see the need for efficient design tools for his small design team.

While gyroplanes, or autogyros, have been around since the late 1920's, their development stopped during ...

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