北京航空航天大学学报 ›› 2015, Vol. 41 ›› Issue (5): 925-929.doi: 10.13700/j.bh.1001-5965.2014.0365

• 论文 • 上一篇    下一篇

船身式水上飞机中高速静水滑行阻力估算

孙建军, 马东立   

  1. 北京航空航天大学 航空科学与工程学院, 北京 100191
  • 收稿日期:2014-06-18 修回日期:2014-08-25 出版日期:2015-05-20 发布日期:2015-06-02
  • 通讯作者: 马东立(1966—),男,山东郓城人,教授,madongli@buaa.edu.cn,主要研究方向为飞机总体设计. E-mail:madongli@buaa.edu.cn
  • 作者简介:孙建军(1989—),男,吉林延边人,硕士研究生,jianjun_sun@163.com

Resistance evaluation for flying boats sliding at medium and high speed in calm water

SUN Jianjun, MA Dongli   

  1. School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2014-06-18 Revised:2014-08-25 Online:2015-05-20 Published:2015-06-02

摘要:

根据水上飞机起飞滑行阶段特殊的多介质环境,参考滑行艇水面滑行阶段的阻力特性分析方法,提出一种考虑气动布局影响的估算船身式水上飞机中高速静水滑行阻力的半理论半经验公式;用此公式计算得到某船身式水上飞机中高速滑行阶段的水动阻力及俯仰角随体积弗劳德数变化曲线,并分析水动阻力及俯仰角变化的原因;根据得到的水动阻力及俯仰角,计算某船身式水上飞机起飞滑跑距离,计算结果与试验结果一致,间接验证了所提出阻力计算公式的有效性,同时也为计算船身式水上飞机起飞滑跑距离提供一种思路.

关键词: 船身式水上飞机, 查结法, 水动阻力, 气动修正, 起飞滑跑距离

Abstract:

Considering the unique multimedia condition during take-off process of a flying boat and referring to the method of studying the resistance performance of a planning boat in the sliding process, a formula, to evaluate the resistance of a flying boat at medium and high speed in calm water, was proposed. The formula combines theoretical analysis and empirical correction and also includes the effect of aerodynamic distribution. With this formula, graphs illustrating hydrodynamic resistance and pitch angle varying with the volume Froude number were obtained and the reasons for the varying were analyzed. Take-off running distance was calculated with the hydrodynamic resistance and pitch angle that calculated from the formula. As the calculated take-off running distance is in consistent with experimental results, the validation of the formula was verified indirectly. And a method to calculate the take-off running distance of a flying boat was also proposed at the same time.

Key words: flying boat, “ЦАГИ&rdquo, method, hydrodynamic resistance, aerodynamic correction, take-off running distance

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