摘要
基于"力耦合"方法,通过开展舰域网格布置/局部加密策略、采用运动网格技术以及飞行动力学模型与机舰耦合流场计算流体动力学(ComputationalFluidDynamics,CFD)方法间数据传递策略和耦合方法,实现气动模型与飞行力学模型间气动力和操纵、姿态等信息的相互交换。算例采用英国"海神之子"船坞登陆舰和"海鹰"直升机作为计算的舰船和直升机模型,应用流场商业软件进行舰载直升机旋翼/机身/舰体干扰流场的研究,采用准定常与非定常数值模拟2种方法手段研究不同相对起降位置尤其是迎风处旋翼尾迹对后续飞行器流场的诱导作用,提取旋翼飞行器所受实时气动力,评价安全起降性能,标志危险起降相对位置及安全起降频率区间,找到机-舰耦合流场的一些典型特征,可在一定程度上用于指导船坞登陆/运输舰多机起降安全设计。
Based on the force coupling method,the data transfer strategy and coupling method between the landing area grid arrangement/local encryption strategy are carried out and the moving grid technology,the flight dynamics model and the CFD method of aircraft ship coupling flow field are adopted to realize the mutual exchange of aerodynamic force,control,attitude and other information between the aerodynamic model and the flight mechanics model.In the example,seahawk helicopter and the British Albion-class landing platform dock are used as the caculation ship and helicopter models,and the commercial flow field software is used to study the helicopter rotor/fuselage and ship body interference flow field.Two methods of quasi-steady and unsteady numerical simulation are utilized to study the induced effect of rotor wake at different relative launch and recovery positions,especially at the windward position on the flow field of follow-up aircrafts.The real-time aerodynamic force of rotor aircraft is extracted,the safety performance of launch and recovery is evaluated,and the relative dangerous position and the safe frequency range of launch and recovery are marked.Some typical characteristics of aircraft-ship coupling flow field are found out.To some extent,it can be used to guide the safety design of multi-aircraft launch and recovery of landing platform dock.
作者
李熠
张洪亮
张洪
刘盾
LI Yi;ZHANG Hongliang;ZHANG Hong;LIU Dun(Systems Engineering Research Institute,CSSC,Beijing 100094,China;First Military Representative Office of Naval Equipment Department in Shanghai,Shanghai 201913,China;Equipment Department of Chinese People's Armed Police Force,Beijing 100089,China)
出处
《船舶工程》
CSCD
北大核心
2021年第S02期124-129,145,共7页
Ship Engineering
关键词
舰载直升机
船坞登陆舰
舰船艉流场
起降安全
起降位
shipboard helicopoter
landing platform dock
ship airwake
flight safety during launch and recovery
launch and recovery position
