lifting surface theory वाक्य

Lifting surface theory
The blade section can be designed by parent section , thereby its chordwis circulation distributions can be worked out , and then lifting surface theory is used to design the three dimension blade geometry
Using a combination method of the lifting surface theory and acoustic technique , the effects of different diameters , skews and rakes on the discrete noise of the propeller are studied by the numerical method and some useful results for engineering are presented in this paper