How come Ed Sterba say's 900 ft per second is the normal maximum for a (wood) propeller. http://www.greatplainsas.com/edrules.html
Dan F. ----- Original Message ----- From: "Colin Rainey" <[email protected]> To: "KRnet" <[email protected]> Sent: Wednesday, August 16, 2006 8:55 PM Subject: RE: KR> Props > Robin > Depending on your altitude, and density altitude of the day a tip speed of > 680 ft per sec could be just below or above the speed of sound. Breaking > the > speed of sound with a prop is a no no if you want max life from the prop, > best performance, and least amount of noise; all of the above are problems > encountered when a prop breaks the speed of sound at the tip or > progressing > down the blade. > > [email protected] <mailto:[email protected]> > > > > -----Original Message----- > From: [email protected] [mailto:[email protected]]On > Behalf Of Robin Macdonald > Sent: Wednesday, August 16, 2006 6:42 PM > To: KRnet > Subject: KR> Props > > > Netheads, > > For what it is worth, I have come across a site about props, one comment > there was that the ideal prop speed is, a tip speed of 680 Ft/sec. > > This may help in the selection of the correct prop. > > Robin > > New Zealand > > [email protected] > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to [email protected] > please see other KRnet info at http://www.krnet.org/info.html > > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to [email protected] > please see other KRnet info at http://www.krnet.org/info.html
