F213 ピッチング運動または脈動風中にある2次元翼に作用する空気力の直接計測(F-21 大迎角物体まわりの非定常・剥離流(2),一般講演)

概要

論文の詳細を見る
A directly measuring system of aerodynamic forces acting on a two-dimensional wing has been developed by use of two small force sensors. This system enables measurement of the lift, drag, and moment coefficients at 1-degree attack angle intervals, and the measurement time to cover the attack angles -180 to 180 is about 10 minutes. Using this system, aerodynamic characteristics of symmetrical NACA64(2)A-015 airfoil were measured in pitching motion or in periodically varying wind. Large hysteresis in the lift coefficient was observed during the pitching motion (attack angle: 4°-20°) and the degree of the hysteresis increased with the pitching motion speed. In periods of low wind speed in periodically varying wind, all aerodynamic coefficients underwent a change by Reynolds effect.
日本流体力学会の論文
2004-08-09