Blade angles and relative angles
Three different angle distributions can be displayed for each span:
•Blade angles βB —
•Relative flow angle βF - - -
•Ineffective relative flow angle -ᆞ-
With the specified incidence and deviation angles (see blade properties) and the attachment and detachment location (the latter is the Stanitz-Radius) relative flow angles can be determined based on the blade angles. An ineffective blade has got a relative flow angle distribution that does not change the pre-swirl.