It is shown that the technique can obviously reduce the aerodynamic drag coefficient of the model.
结果表明：内部声激励能够明显地降低车身模型的空气阻力系数。
By extending length of the test floor properly, the aerodynamic drag coefficient can be measured more precisely.
适当延长地板，可提高气动阻力系数的测量精度。
The change rules of aerodynamic parameters including lift coefficient, drag coefficient and pitch moment coefficient have been analyzed when Angle of attack and fuel flow rate is changed.
考虑了不同飞行攻角、不同燃料流率下气动参数，包括升力系数、阻力系数和俯仰力矩系数的变化规律。
The analysis of aerodynamic force data shows that differ front shape is very important to aerodynamic force. For example, coach model air drag coefficient can be lowed to 0.5759 from 0.7509.
试验数据分析结果表明，不同客车前部造型对气动力影响非常显著，如通过改善造型可使空气阻力系数由0.7509降为0.5759。
After aerodynamic optimization of an unmanned vehicle with the methods mentioned above, the lift coefficient has an increase of 21 % and the ratio of lift to drag has an increase of 6. 7%.
通过优化无人机外形取得了有意义的结果，优化后升力系数增加了21%，升阻比提高了6.7%。
Also the effect of different ice shapes on lift and drag coefficient were assessed. The results indicate that the glaze ice has the most adverse impact on airfoil aerodynamic performance.
另外还计算了不同的冰形对机翼升、阻力的影响，结果表明瘤状冰对机翼气动特性的影响最大。
The unique aim of aerodynamic designer is always to enhance lift coefficient and reduce drag coefficient.
增升减阻一直是空气动力设计工作者追求的目标。
The unique aim of aerodynamic designer is always to enhance lift coefficient and reduce drag coefficient.
增升减阻一直是空气动力设计工作者追求的目标。
应用推荐