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翼弦 [yì xián]
chord of a foil
- 摘要格宽翼弦比是影响栅格翼气动特性的一个重要几何参数。
The width to width ratio of grid fin was an important parameter influencing the aerodynamics of grid fins. - 姿态角：介于「翼弦」跟水平面间的角度。他高于水平面时是好的，低于则是不好的。
Attitude angle is the angle between the chord of the wing and the horizon. It is positive above and negative below the said horizon. - 结果显示，在所选择的格宽翼弦比范围内，格宽翼弦比对阻力的影响不大，对法向力有明显的影响，格宽翼弦比越小法向力特性越好。
The results show that the drag of grid fins is little affected by width to chord ratio, the normal force of grid fins was large, and that the smaller was the ratio, the better was the characteristics of the grid fins's normal force in tested sizes of width to chord ratios.
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