Turboprop
 

Just a silly question-. .. .Why does torque increase as you gain speed on a turboprop engine...?. .. .Best regards

Ram air effect?

To be specific,. .. .the amount of air that "passes trough the prop", increases with airspeed. You would expect that the prop would start to spin faster, but it doesn't because you have set a constant rpm with your conditon levers. So instead the torque increases as power is a function of airspeed. <img border="0" title="" alt="[Smile]" src="smile.gif" />

N4641P . .. .Thanks for the help........I appreaciate it.. .Regards

As your speed increases you need more thrust, i.e. torque.

Tinstaafl provided the correct answer.. .. .Power is a function of torque and RPM. Propeller torque is a function of propeller pitch, RPM and airspeed. The interesting thing here, power turbine torque, is a function of RPM and engine air mass flow. RPM will be held constant by the prop governor but the ram air effect will increase the air flow for a given power setting. Alas, you end up with torque blooming as you pick up speed.. .. .Cheers,. . Fred