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Old 23rd Nov 2009, 09:52
  #50 (permalink)  
south coast
 
Join Date: Mar 2001
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Come on Fuzzy Lager, we know what he meant.

If you want to split hairs, turbo-props produce Torque, 'power' is a very loose decription.

Would you please explain to me in that case what a turbo-fan produces, all it is is a shrouded propellor. (it accellerates a small(er) mass of air quick(er) as opposed to a turbo-prop which accellerates a larger mass of air less quicker).

Only at high alitude where the air become less dense does the exhaust thrust start to have more influenece than the 'thrust' produced by the fan.

Perhaps what you referred to was a pure jet engine which works with exhaust thrust only, but turbo-props and turbo-fans are not so different in principle.

Even on the PT6 there is a value given in the POH for 'residual thrust'.
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