HIGH PERFORMANCE WING FOR BLADE

摘要

PROBLEM TO BE SOLVED: To provide a high performance wing for a blade capable of solving problems such that resistance with heightening a flying speed increases causing degradation in high speed flying performance and that a maximum take-off weight of a helicopter decreases causing difficulty in heightening performance of the helicopter. SOLUTION: This wing for the blade has a large front edge diameter and flat upper and lower faces in the center of a wing face and comprises a large camber mounted on parts except for a back edge portion and a reverse camber mounted on the back edge. Thereby a high maximum lift, a high resistance divergence Mach number and a high lift-drag ratio can be obtained and the wing can have a low pitching moment coefficient allowing reducing a load of a pitch angle control device and heightening speed and increasing a payload of the helicopter.