New method for analyzing free wake of hovering-helicopter rotor produces more reliable results and requires less computer time. Copes with wake instabilities, both physical and numerical, that afflict usual time-stepping analysis methods. Tip-vortex position, in coordinates moving with rotor blade, updated in relaxation procedure. Wake-airflow solution reached when updates converge to steady wake shape.
Analyzing Wakes From Hovering-Helicopter Rotor Blades
NASA Tech Briefs ; 11 , 9
1987-10-01
Miscellaneous
No indication
English
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