用户名: 密码: 验证码:
一种运输机平尾端板气动特性影响研究
详细信息    查看官网全文
摘要
针对某运输机背部加装大型附加物后,出现航向稳定性和纵向稳定性不足的现象,本文提出了一种加装平尾端板的气动补偿措施,并对端板的尺寸、位置进行了风洞试验对比研究,获得了满足不同的稳定性改进目标需求的平尾端板外形尺寸以及气动影响量。风洞试验结果表明,平尾端板的气动补偿效果与其布置位置、外形尺寸密切相关.采用展弦比λ≈3、1/2弦线后掠角x_(1/2)≈6°、面积S=0.018 m~2的平尾翼尖端板布置方案可带来全机C_(nβ)增加0.0007、C_(mCL)增加-0.034的气动补偿效果,基本达到了某运输机的航向和纵向稳定性补偿目标,飞机的飞行品质得到明显改善,同时对飞行性能基本无影响。
The fly quality of a transport reduced after lifting a large accessory outside the fuselage,which could be attributed to lack of enough directional stability and longitudinal stability,a design method using horizontal tail end plate is proposed in this paper in order to increase the directional stability and longitudinal stability,as well as the end plate geometry size,location,and other parameters are studied to find the most appropriate case to meet the different stability improvement objective need.The result of wind tunnel test shows that it could bring a effect of △C_(nβ)≈0.0007 & △C_(mCL)≈-0.034 by using a horizontal tail end plate case of λ≈3、χ_(1/2)≈6° 、S=0.018 m~2 at the tip.fly test also shows the fly quality is improved and the fly performance keep the same level.
引文
[1]Parkinson R.An-225/HOTOL[R].AIAA,93-5169,1993.
    [2]Frazier W.Longitudinal and Directional Static Stability Effects of a Large Radome Mounted Atop a 747-200Aircraft[R].AIAA,2001-3173,2001.
    [3]艾德·奥波特.运输类飞机的空气动力设计[M].上海:上海交通大学出版社,2010.
    [4]方宝瑞.飞机气动布局设计[M].北京:航空工业出版社,1997.
    [5]欧阳绍修,刘学强.飞机背负任务系统后横侧气动特性及改进措施数值分析[J].南京航空航天大学学报,2010,42(6):694-698.
    [6]江永泉.飞机翼梢小翼设计[M].北京:航空工业出版社,2009.
    [7]翁晨涛,夏露.民用飞机翼尖设计研究[J].飞行力学,2011,29(2):13-16.
    [8]王勋年,孙正荣,刘伯均,等.低速风洞试验[M].北京:国防工业出版社,2002.
    [9]恽起麟.试验空气动力学[M].北京:国防工业出版社,1991.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700