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ATP_Al
24th Feb 2010, 23:34
Does anyone know of a book that gives a clear explanation of the forces acting on the blades of constant speed prop?

I'm preparing a presentation and just need a few ideas

Thanks!

Golden Rivet
25th Feb 2010, 07:12
jeppeson propellers and controls.

barit1
25th Feb 2010, 12:44
An important thing to keep in mind is that the centrifugal force on the blade itself will try to move it to fine (or low) pitch. Without external torque on the blade root, this will lead to overspeed - very quickly - as the prop behaves like a turbine, extracting its energy from the slipstream.

So the whole control mechanism - counterweights, hydraulics, cams, helical pistons, whatever - is always fighting this above physical reality.