摘要
运输机在使用过程中,货物的装载方案是一个必须解决好的实际问题。货舱内货物质量与安放位置等会发生变化,货物质量分布对机体结构振动特性影响较大,不同的装载方案对飞机的动态特性影响不同。本文从运输机使用安全角度出发,基于结构动力学对不同装载条件下运输机振动特性进行了分析,最后以某航空兵团空运转场过程中不同装载方案为例,讨论了某航空兵团空运转场过程中不同装载方案对其飞行安全的影响,并提出了相应的装载改进方案。
In the use of transport airplane, it is a practical problem that must be well solved for transportation of cargo. The weight and place of cargo in the airplanes will change as the variation of practical need. Different loading plans will influence on plane＇s vibration characteristics and the plane＇s security and control can＇t be ensured. So it is very important to research and assess aircraft＇s vibration characteristic with different loading plans. This paper analyzed the airplane＇s dynamic characteristic in different loading plans on basis of structural dynamics of airplane＇s safety. Firstly, the airplane＇s finite element model was established based on finite element methods. Secondly, dynamic characteristic in different loading plans is analyzed. Finally, dynamic characteristic of airplanes is evaluated in different loading plans according to ten different loading plans of airlift ferry for aviation Troop. The plan is reasonable come from practical application.
出处
《飞机设计》
2011年第5期26-31,35,共7页
Aircraft Design
关键词
运输机
装载方案
有限元方法
动态特性
cargo-transport airplane
loading plan
finite element method
dynamic characteristic
