CVN-73航母空气尾流主动控制技术

Study on the air wake field of CVN-73 carrier using active control technology

为缓解甲板风引起的航母公鸡尾流对舰载机着舰安全的影响,提出了一种在航母尾部吹风的尾流主动控制技术。采用计算流体力学方法,分别计算了0°甲板风条件下原始工况和采用主动控制技术下的CVN-73航母尾部流场特性,并对比分析了不同吹风角度对尾流特性的影响。研究结果表明,随着吹风角度的增大,其对尾流中下洗气流的抑制作用先增强后减弱,当吹风角度为30°或45°时,其对下洗气流的抑制效果最佳,可将最大下洗速度减少为原来的1/2,有效改善了公鸡尾流环境,对舰载机的着舰安全性提升具有重要的意义。

An active control technique using blowing method at the tail of aircraft carrier is presented to mitigate the effect of cock wake caused by deck wind on carrier-based aircraft. Computational fluid dynamics is used to calculate the characteristics of the CVN-73 carrier wake field. When the deck wind angle is zero, a comparative study is carried out under working conditions with and without active control technology, respectively, and the effect of blowing angle on the flow field is also analyzed. The result shows that with the increase of blowing angle, the inhibition effect of control technology on downwash in the wake field increases first and then decreases. When the blowing angle is 30 or 45 degrees, the inhibition effect is the most obvious, and the maximum downwash speed can be reduced to half. In conclusion, the active control technique using blowing method can improve the cock wake environment and increase landing safety of carrier-based aircraft.