These spreadsheets were developed by John Roncz.
I think the weight and balance and prop were by Don Moore.

Anyway, just change the numbers in yellow.

Then watch all of the answers pop up.

Notice that the magic number for tip speed is 900 feet per second. (the speed
of sound).

If you screw up and change a number that is not in a yellow panel, just quit,
and when the panel for save changes pops up say no and close it. When you
reopen the sheet it will be OK again.

Lynn E Hanover
lehanover@aol.com

 
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