Pietenpol-List: YouTube video of first engine start
Posted: Tue Oct 14, 2008 1:47 am
Original Posted By: helspersew(at)aol.com
Apparently this blade type will behave somewhat likea variable pitch prop. As the rpm and power increasethe tip bends foreward flattening the pitch thus becominga "climb" prop and when leveling out and reducing powerit settles back into the higher pitch it was carved to, thusincreasing the speed per rpm.How much effect will, of course, depend on the stiffnessof the blade, in turn dependant on the thickness and thematerial. Some woods are resist bending more than others.Clif Steve, As for the advantages to the scimitar shape I don't really know. Dan Helsper Poplar Grove, IL________________________________________________________________________________Subject: Pietenpol-List: YouTube video of first engine startDate: Tue, 14 Oct 2008 06:28:41 -0400
Apparently this blade type will behave somewhat likea variable pitch prop. As the rpm and power increasethe tip bends foreward flattening the pitch thus becominga "climb" prop and when leveling out and reducing powerit settles back into the higher pitch it was carved to, thusincreasing the speed per rpm.How much effect will, of course, depend on the stiffnessof the blade, in turn dependant on the thickness and thematerial. Some woods are resist bending more than others.Clif Steve, As for the advantages to the scimitar shape I don't really know. Dan Helsper Poplar Grove, IL________________________________________________________________________________Subject: Pietenpol-List: YouTube video of first engine startDate: Tue, 14 Oct 2008 06:28:41 -0400