现代海军的非航母型舰艇已普遍装备了直升机,然而身处风大浪高的海洋环境.要让直升机在剧烈动荡的舰艇上安全降落却也不是件易事。首先,直升机起降需要解决快速系留问题。舰艇剧烈摇晃时,人都难以立足,直升机就更“站”不稳了。比如,对于护卫舰级别的舰艇来说,5级海情就意味着舰艇要承受6米/秒的升沉率,30°的横摇和9°的纵摇。因此,直升机着舰后的几秒钟内,必须能够快速系留住。其次,直升机在甲板上还有牵引问 Modern Navy's non-aircraft-based ships are generally equipped with helicopters, however, in a sea of ​​high waves and high seas, it is not easy to get the helicopters safely landed on the fiery ships. First of all, helicopter takeoff and landing need to solve the problem of rapid tether. When the ship was shaking violently, it was difficult for people to gain a foothold and the helicopter was even more “unstable”. For example, for a frigate-class ship, a Class 5 sea condition means that the ship is subject to a 6 m / s rate of heave, 30 ° roll and 9 ° pitch. Therefore, within seconds of the helicopter landing, it must be able to keep it fast. Second, the helicopter still has traction on the deck