From: Harvey Schmiddlapp XVMIII <email@example.com> Organization: Arizona Daily Star - AZSTARNET Date: 24 Jun 96 12:24:49 References: 1 2 3 4 5 6 Followups: 1 2
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On a turboprop, like the C-130, the engine spins at approximately 13000 RPM while the prop spins at approximately 1100. When the pilot advances the power, the angle of the prop blades to the airstream change to and essentially add lift in the forward direction. The engine as the prop pulls more power, it signals the fuel system to increase the fuel, thus the power to substain the 1100 RPM and additional thrust. The near instantaneous transition from low thust to high thrust is made possible by the torque generated by the turbines spinning at 13000 RPM. In other words, the turbines act as a flywheel, storing energy.