The two new airfoils, the RC(4)-10 and RC(5)-10, and a baseline airfoil, the VR-7 which is currently in use, were all ... of helicopters via the development of advanced airfoil sections for helicopter main rotor blades, and significant results have been achieved ... inboard region (stations alt;85 percent radius) where some compromise in the drag-divergence Mach number could be made. ... The VR-7 was selected as the baseline since it was currently in use on modern full-scale rotors (ref.
|Title||:||Aerodynamic Characteristics of Two Rotorcraft Airfoils Designed for Application to the Inboard Region of a Main Rotor Blade|
|Publisher||:||DIANE Publishing -|