垂尾关键结构刚度对垂尾动力学特性的影响  

The Infection on the Vertical Tail's Dynamics by the Rigidity of Key Parts of the Tail

作　　者：苍峰[1] 王赫喆[1] 赵铁铭[1] 邱涛[1] 

机构地区：[1]沈阳飞机设计研究所,辽宁沈阳110035

出　　处：《飞机设计》2014年第1期14-18,共5页Aircraft Design

摘　　要：对于飞机而言,垂尾用于保证飞机的航向平衡和安定性,而垂尾刚度决定了飞机方向安定性,因而垂尾通常按刚度要求进行设计。对于双垂尾飞机的结构和气动布局形式,颤振形式比较复杂,除了机身边条尾涡对垂尾的气流扰动外,其垂尾自身刚度分布对垂尾颤振特性也有较大影响。本文选取某型飞机为研究对象,建立相应的动力学模型,重点研究垂尾的关键结构部件(包括垂尾根部接头,垂尾前后梁上端部分,方向舵拉杆)的刚度变化对垂尾动力学特性的影响,运用p-k法研究垂尾的颤振特性。结果表明,变垂尾关键部件刚度对垂尾弯扭型颤振影响不大,而垂尾前后梁上端部分和方向舵拉杆的刚度对方向舵旋转型颤振存在不同程度的影响。本文结果为摸清某型飞机垂尾的动力学特性提供了有力的数据支持。For an aircraft, the vertical tail insures the balance of course and the stability of the aircraft, and also the rigidity of the tail decides the stability of the aircraft＇s direction, which determines the design of the vertical tail should meet the require on the rigidity. As to the structure of double vertical tail and the aerodynamic configuration thereof, the form of flutter is complex. In addition to the flow disturbance to the tail from the strake of the fuselage, the rigidity distribution of the vertical tail influence the flutter of the tail. Taking a certain type of aircraft, this paper sets up relevant aerodynamic model, draws emphasis on the research on the changes on dynamics of the vertical tail by the rigidity of key parts （including the joint on the tail root, the upper end of the front and rear spar and the rudder）, and researches the flutter characters using the P-K method. The outcome shows that the key parts little influence the crankle flutter of the tail, while the rigidity of the upper end of the front and rear spar and the rudder may influences the revolving flutter of the rudder in different extend. The outcome of this paper brings convincing data for felting out of the dynamics of the vertical tail of the certain type of aircraft.

关 键 词：垂尾 刚度 动力学特性 

分 类 号：V215.34[航空宇航科学与技术—航空宇航推进理论与工程]