Induced Drag of wings and Calibration

1. 新平衡诞生了。利用这种平衡对前掠/后掠机翼进行了实验。天平采用日本唯一的NAL多分量校准台进行校准。利用NAL标定结果计算的诱导阻力随着后掠角的增大而增大。根据天平生产厂家的标定结果计算得出的诱导阻力随着后掠角的增大而减小。事实是，该天平的负载在NAL校准架的下限范围内，并且该架的校准协议自该架最近开始运行以来尚未建立，这意味着该架的校准结果可能不是很准确。重新校准天平的工作再次在NAL进行。本次实验的最终结果将在重新校准后公布。

1. New balance was made. Experiments on forward/aft-swept wings were conducted using this balance.2. The balance was calibrated by means of multi-component calibration stand of NAL which is the only one test stand of this kind in Japan. Induced drag, which is calculated by use of the calibration results of NAL,increases as the sweptback angle increases.3. Induced drag, which is calculated by use of the calibration results of the manufacturer of the balance, decreases as the sweptback angle increases.4. The facts, that the load of this balance is within the lower limit range of the NAL's calibration stand and the calibration protocol of this stand has not been established since this stand started to run recently, means that the calibration results of the stand might not be very acurate.5. The re-calibation of the balance is again going on at NAL.The final results of this experiments will be published after the re-calibration.