Thread: Why still no dive acceleration difference?
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Old 05-31-2012, 02:21 PM
BlackBerry BlackBerry is offline
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Quote:
Originally Posted by Crumpp View Post
A supersonic propeller design would not work very well on a WWII Piston fighter.
See here, 3-blade NACA16 propeller on P47D, propeller tip speed is 1.0-1.1 Mach while efficiency is still quite high.

http://digital.library.unt.edu/ark:/...adc62616/m1/7/

med_res.jpeg

here, effect of compressibility on propeller efficiency.

http://digital.library.unt.edu/ark:/...dc62616/m1/25/
Last edited by BlackBerry; 05-31-2012 at 02:35 PM.
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