How to calculate Kaplan Tubine blades profile?
I understand how to make the blade with loft function with some known profiles. But I have problems with the profile. I have no commercial program at hand to make a blade. Can anyone please advise me how to calculate profile geometry?I've tried to look in books,but found only partial calculations (for main blade profile dimensions).I think it should be about 3-4 sections to loft..Or may be there is any freeware software for kaplan blades calculation?