舰船空气尾流场特性研究

舰船空气尾流场是舰载直升机在非航空型舰船上起降或者在这类舰船附近作业时的主要环境条件，是危及舰载直升机飞行安全的主要因素之一。现以机－舰动态干扰为研究目的。通过各种试验结果的相互比较，验证，综合分析了舰船空气尾流场特性。着重研究了尾流场中涡流区的及变化规律，下洗速度的大小、下洗范围及变化规律，为机－舰动态配合的试验提供了可靠的依据，另外，还结合飞行实践简要地分析了直升机进入尾流场后的反应。

Characteristic of Ship Air Wake Field

Ship air wake field is the main eavircment conditions for ship -board helicopter to take - off/landing from/on the non-aircraft-boarded ship (destroyer,frigate ) of operate near it, and is one of the main factors effecting helicopter fligt safety. Aiming at the helicopter -ship dynamic interference, this paper analyses the characteristic of ship air awake fieid by comparing and vcrifing various testing results. The study emphasis is layed on the range and the yaring rule of the eddy zone in the wake field, and the speed effecting range and varing rule of the downwash. The reliable foundation for helicopter -ship dynamic combination is provided. In addition, the reaction of helicopter approaching wake field is analysed with the flying practice.