M-T Propellers says its 11-bladed design delivers increased thrust with “an impressive noise and sound signature.” The German propmaker says it put the turbine-like device on a Piper Cheyenne fitted with P&W PT6A-135A engines and flew it a couple of months ago. “The very promising results in static thrust, 15% increase over the standard certified 5-bladed … Continue reading M-T Tests 11-Blade Prop