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silly question on best glide speed?



 
 
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  #11  
Old October 23rd 05, 08:35 PM
Stefan
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Default silly question on best glide speed?

Tony wrote:

There's the other point: isn't glide range extended in a 172 if the
prop isn't windmiling?


It is in any aircraft.

Stefan
  #12  
Old October 24th 05, 12:20 AM
john smith
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Default silly question on best glide speed?

There's the other point: isn't glide range extended in a 172 if the
prop isn't windmiling?


Remember that picture in the different aviation rags several years ago
of the Mooney with the feathered prop?
Anyone remember what the add was for?
  #13  
Old October 24th 05, 01:19 AM
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Default silly question on best glide speed?

Tony wrote:
There's the other point: isn't glide range extended in a 172 if the
prop isn't windmiling?



It is in any aircraft.


Stefan


You'll start another windmilling argument with that. There are
some serious divisions over whether to stop a prop or not to get more
range after an engine failure.
When we stopped the prop on the 150, the airplane's attitude was
more nose-down to maintain the same glide speed, and the rate of
descent was higher. The theory here is that the much higher angle of
attack on the prop blades when stopped causes more drag that if it's
windmilling.

Dan

  #14  
Old October 24th 05, 02:00 AM
George Patterson
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Default silly question on best glide speed?

Tony wrote:

There's the other point: isn't glide range extended in a 172 if the
prop isn't windmiling?


Yes, but you will lose a lot of altitude slowing down to get it stopped.
Empirical experiments show that, if you're lower than about 6,000' above your
target landing point, you're better off trimming for best glide and letting it
windmill.

George Patterson
Drink is the curse of the land. It makes you quarrel with your neighbor.
It makes you shoot at your landlord. And it makes you miss him.
 




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