I think I have that version unless you made revisions in the last few

years.

Here also is some output data you sent awhile back.
BTW if anybody needs QB let me know. Runs fine on Windows XP in command

mode.

Paul Lamar

Yes - that looks like the same program, and to respond to other comments it
is NOT
taken from Marty Hollman's book (thank you Paul for your input on that) I
have not
tried Marty's program, but I am pretty sure you cannot describe a prop and
get
an output for mapping perf over a range of rpm and forward speeds.
Incidently
the case you chose for an example seems to show that it can predict really
off
range. The program properly predicted if you had 50 inch pitch flying at
200 mph the prop would be acting like a wind generator at anything less than
3400 rpm. For starting to set prop size the program PRPSIZ2 (which I may
have sent you before) is a good place to start. You give it hp and rpm with
an honestly expected top speed, and it will suggest pitch and blade area
distribution for the selected diameter. (copy attached) _

I think Paul Lipps uses the Marty program, fine tuned to his case, and with much
more
numerous and close spaced stri elements. But I do not think it is varied
very
far each side of design point
Vance

Paul Lamar
 
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