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Which way does a boat turn?
nah.
Lower that paddle wheel into the water, until it is just beneath the water .... bet it will still pull to the right, because the blades on the upward part of the rotation will be lifting the water and basically throwing the "push" away (into the air) i.e., they'll be pushing, but not at the efficiency of the blades on the downward turn. otn Scott Vernon wrote: A paddle wheel has it's top portion out of the water, a prop doesn't. "engsol" wrote in message ... Being old and senile, I have to work things out with a mind picture. Re prop-walk...if I have a prop with flat blades aligned fore and aft, I essentially have a "paddle wheel". If I turn the prop clock-wise (as viewed from the rear of the boat), I'd expect the stern to go to the right. Reversing the direction would obviously make the stern go to the left. If I re-pitch the prop so the flat blades are at right angles to the keel, (cross-ways), I'd expect a bit of froth, but not much in the way of stern reaction. When I consider a *real* prop, the blades are aligned between the two extremes above, and I'd expect the stern reaction to also be between the two extremes. Norm B |
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