Impeller > Mean line design > Blade mean lines > Additional views

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.