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What is this Roncz prop program and where do I get a copy? I knew he designed the props on the Pond racer, but I hadn't heard that he'd "published" anything.
I'm very interested .... Jim S.
kenpowell@comcast.net wrote:
Rusty,
I don't have Excell on this computer so I can't run the John Roncz prop program that I sent out last week. However, I seem to remember that we won't be able to run over about 6600 RPM with a 2.17 redrive without approaching transonic tip speeds (over 900 FPS) on the prop. Tracy never said so, but I suspected that this was one of the limits on his past setup.
Just a thought, and without running the numbers can't be sure. Maybe someone will run the numbers with the Roncz program and post the results (and take the guesswork out of the equation).
Ken Powell
>> Homepage: http://www.flyrotary.com/
>> Archive: http://lancaironline.net/lists/flyrotary/List.html
--
Jim Sower ... Destiny's Plaything
Crossville, TN; Chapter 5
Long-EZ N83RT, Velocity N4095T
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