Analysis was based on use of unsteady aerodynamic data, obtained by United Aircraft Research Laboratories, on NACA 0012 airfoil oscillating in pitch about its quarter-chord over wide range of values of incidence angle, oscillatory frequency, amplitude of motion and free-stream velocity; two different procedures to determine stability characteristics of S-61F rotor were employed; summary of results obtained.
Analysis of stall flutter instability of helicopter rotor blades
Am Helicopter Soc -- J
American Helicopter Society -- Journal ; 12 , n 4
1967
18 pages
Aufsatz (Zeitschrift)
Englisch
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