刘杨.一种机翼弯剪载荷包线近似计算方法[J].航空工程进展,2013,4(2):241-246
一种机翼弯剪载荷包线近似计算方法
Approximation Method for Calculating the Wing Load Envelope of Bending Moment and Shear Force
投稿时间:2013-01-23  修订日期:2013-05-10
DOI:
中文关键词:  机翼,升力,载荷分布,剪力,弯矩,过载,载荷包线
英文关键词:wing, lift, load distribution  shear force, bending moments, over loading, load envelope
基金项目:
作者单位E-mail
刘杨 上海飞机设计研究院强度部 liuyang1@comac.cc 
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中文摘要:
      在机翼静强度初步设计中,为了快速准确地得到其载荷包线并用于确定翼盒结构基本参数,本文研究出了一种近似计算方法。通过比较多种重量估算方法,得到三角形分布能较好的拟合机翼重量。进一步地,研究了大型民用运输机飞行临界过载特点和集中载荷等特性,综合Schrenk升力分布和三角形重量分布得到在飞行载荷下,一种近似计算机翼剪力和弯矩载荷包线的方法。并通过用两机翼风洞试验数据得到的机翼剪力和弯矩包线验证了此近似方法可行。
英文摘要:
      In this paper, an approximation method is presented for calculating the wing load envelope and using to size the wing box in wing strength primary design phase. It is found that the triangle weight load distribution is better than other distributions in simulating the wing weight. Furthermore, this paper investigates the characters of critical over loading and centralized loads for large civil aircrafts. An approximation method for calculating the wing load envelope of bending moment and shear force in flight is proposed by combining the Schrenk lift distribution and triangle weight distribution. Then, the proposed method is validated by wind tunnel data of wing shear forces and bending moments.
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