http://www.dirkbradshaw.com/?p=7660 All The News THEY Don't Want You To Know! Thu, 09 Sep 2010 14:48:43 +0000 http://wordpress.org/?v=2.9.2 hourly 1 http://www.dirkbradshaw.com/?p=7660&cpage=1#comment-112824 Albannach Fri, 19 Mar 2010 22:46:32 +0000 http://www.dirkbradshaw.com/?p=7660#comment-112824 No, the advance will the remain the same. The RATE of the advance will be faster at higher RPMs. No, the advance will the remain the same. The RATE of the advance will be faster at higher RPMs.

]]> http://www.dirkbradshaw.com/?p=7660&cpage=1#comment-112823 pitts_pilot Fri, 19 Mar 2010 22:29:13 +0000 http://www.dirkbradshaw.com/?p=7660#comment-112823 The answer is no it(the 'advance') does not change with RPM. It is called 'pitch' and notice that the 'angle' varies with distance from the center for a given pitch. That change in angle accounts for the different radial 'speeds' as you move toward the tip. Pitch is usually given in inches per revolution, say for a Cessna 172, it is something like 58 inches. Note that the efficiency is not 100% so you don't really get 58 inches of travel for every revolution of the prop. The answer is no it(the ‘advance’) does not change with RPM. It is called ‘pitch’ and notice that the ‘angle’ varies with distance from the center for a given pitch. That change in angle accounts for the different radial ’speeds’ as you move toward the tip.
Pitch is usually given in inches per revolution, say for a Cessna 172, it is something like 58 inches. Note that the efficiency is not 100% so you don’t really get 58 inches of travel for every revolution of the prop.

]]> http://www.dirkbradshaw.com/?p=7660&cpage=1#comment-112822 Kevin H Fri, 19 Mar 2010 22:29:11 +0000 http://www.dirkbradshaw.com/?p=7660#comment-112822 you could have full throttle and still not go very fast.. it depends on your attitude.. but i assume you're talking about cruise flight.. in that case, this question is a little to advanced for me to answer.. you would increase speed.. but i don't think it would be a linear function.. it would be more of a curve if you looked on a graph of RPM vs speed.. theres just to many variables to think about to really explain it you could have full throttle and still not go very fast.. it depends on your attitude.. but i assume you’re talking about cruise flight.. in that case, this question is a little to advanced for me to answer.. you would increase speed.. but i don’t think it would be a linear function.. it would be more of a curve if you looked on a graph of RPM vs speed.. theres just to many variables to think about to really explain it

]]>