文档介绍：西北工业大学
硕士学位论文
题目:Y7-200A 飞机颤振适航性研究
系(所):飞机系
专业:固体力学
研究方向:结构动强度设计
研究生:郭宏利
攻读学位:硕士
导师:吕国志教授
乔长有研高工
完成日期:二零零一年三月
西北工业大学硕士论文
摘要
颤振是一种复杂的气动弹性不稳定现象。这种气动弹性现象非常有害,对飞
机的飞行安全构成极大的威胁。飞机颤振特性的研究在飞机的研制中起着重要的
作用。
在第 25 部运输类飞机适航标准第 629 条款中,对飞机气动弹性稳定性提出
了明确要求。要求评定包括颤振、发散、操纵反效以及任何因结构变形引起的稳
定性的过度丧失,必须通过分析、风洞试验、地面振动试验、飞行试验来表明对
本条的符合性。
Y7-200A 飞机是一种新型的中短程客机。Y7-200A 型飞机是在其原形机基础
上改型的,对原形机进行了脱胎换骨式的全新设计,飞机的动力特性发生了很大
变化,要使其投入航运,必须对其颤振特性进行适航性分析研究,使其满足适航
要求。
本文结合 Y7-200A 型飞机的研制过程,主要从工程应用和适航性的角度,
以理论计算为主,结合全机地面共振实验、颤振飞行试验、颤振模型风洞试验等
结果,对 Y7-200A 型飞机可能出现的各类颤振形式进行了比较深入的研究。
关键词: 颤振颤振特性适航性
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ABSTRACT
ABSTRACT
Flutter is a kind plicated aeroelasticity instability phenomenon. It is rather
danger to the safety of aircraft structure and is a serious threat to flight safety. The
airworthiness analysis of flutter characteristic plays an important role in aircraft design.
Clear requirements of flutter are given . Aircraft must be free from
aerodynamic instabilites such as flutter and divergence to ensure safe operation. This is
plished by using analysis, ground vibration testing ,wind-tunnel testing and aircraft
flight testing.
Y7-200A is a short-medium range aircraft which is a derivative of the An-24 aircraft.
The major difference between the An-24 and Y7-200A aircraft is the new PW-127C
turboprop engines. Y7-200A aircraft dynamic properties changes greatly. Y7-200A aircraft
must meet the flutter airworthiness requirements AR so as to service in airlines.
A detail flutter analysis is performed from the perspective of engineering and
airworthiness in this paper, combining with flutter calculations and the results of the ground
vibration testing and the Y7-200A aircraft flight flutter testing .
Key words: Flutter Flutter characteristic Airworthiness
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西北工业大学硕士论文
目录
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