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Hi, Bob and Scotty!
Bob, I take no umbrage with Scotty's
discussion, but thanks for being my defender, my Knight-in-Shining-Armor; I
really appreciate that! There are some contributors on the rec.
aviation.homebuilt site that are really very arrogant and impatient with anyone
who doesn't share their beliefs or who don't give them proper obeisance in
recognition of their outstanding intellect; one electrical-type who has a number
of sycophants comes readily to mind. I haven't found that here. Scotty
and many others who contribute here give extremely good data and good
ideas. I relish this! Sometimes a data discussion can appear as something
other than that. Engineers, using engineering language, can sometimes come
across as arrogant know-it-alls when all they are trying to do is present their
explanation! Engineers, however wrongly, are never characterized as being
touchy-feely.
BTW, Scotty. In my prop's analysis, I
used my prop's effective pitch, for which I gave a formula, to determine the
blade Beta. 'Don't know why I did that, since I have the chord-line blade angle
and chord every inch from the hub to the tip. At 75%,
approximately 24", it is 27.1 deg.; the chord there is only 1.86". What's
interesting is that I think that is about what I calculated from its
76" effective pitch! Paul
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