Components parameterization in helicopter conceptual design
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摘要: 为了满足直升机概念设计阶段对方案快速建模的要求,在面向对象技术的基础上提出了直升机概念设计阶段部件的建模分类方法,并且建立了一个计算机辅助直升机概念设计系统.应用非均匀有理B样条NURBS(Non-Uniform Rational B-Spline)曲面和基于特征的部件造型技术,实现了各种型式直升机方案的参数化建模.其中结合设计参数提出了旋翼的桨叶、桨尖、桨毂以及整流罩的描述参数,并对涵道尾桨进行了分段造型处理.最后给出了该系统中生成的两个设计方案作为实例以验证所提出方法的便捷性和有效性,这些方法也为进行设计方案的性能分析和优化等后续工作奠定了基础.Abstract: To satisfy the requirement of rapid modeling in helicopter conceptual design, a method was brought forward for classifying helicopter components on the basis of object-oriented technique, and a computer aided helicopter conceptual design system was developed. By applying NURBS(non-uniform rational B-spline) surfaces and feature-based components modeling technique, parametric modeling of helicopter concepts belonging to different types was realized. In particular, by taking the design parameters into account, the patameters describing rotor blade, blade tip, rotor hub and fairing were proposed, and ducted tail rotor was modeled by breaking it into several continual segments. Two design concepts generated with this system were finally presented as examples to validate the convenience andeffectiveness of the proposed methods, which formed the bases for such further work as concept performance analysis and optimization.
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Key words:
- helicopter /
- conceptual design /
- computer aided design /
- parametric modeling
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[1] Kenneth Grina.直升机设计[M] 高正等译. 南京:南京航空学院直升机技术研究所,1992. 1~5 Kenneth Grina. Helicopter design[M] Translated by Gao Zheng. Nanjing:Institute of Helicopter in Nanjing University of Aeronautics & Astronautics, 1992. 1~5(in Chinese) [2] 张广林. 旋翼飞行器的总体综合设计技术. 见:航空关键技术. 北京:中国航空工业发展研究中心, 2001.236~243 Zhang Guanglin. The technology of conceptual synthetical design for rotorcraft. In:Aviation Key Technology. Beijing:Aviation Industry Development Research Center of China, 2001.236~243(in Chinese) [3] Lu Liangju,Arvid Myklebust. Steven war, integration of a sizing code with a computer-aided design system[J] Journal of American Helicopter Society, 1987, 32(4):16~27 [4] 徐利军,沈梦山. 直升机几何模型的计算机辅助设计. 见:第七届全国直升机年会论文集. 深圳:中国航空学会直升机专业委员会,1991. 355~366 Xu Lijun, Shen Mengshan. Helicopter geometrical modeling and computer aided design. In:Papers Collection of the Seventh Helicopter Annual Meeting. Shenzhen:Technical Committee of Helicopter, Chinese Society of Aeronautics & Astronautics, 1991. 355~366(in Chinese) [5] Liu Hu, Wu Zhe, Wang Ganglin, et al. Implementation of a sketch based approach to conceptual aircraft design synthesis and modeling[J] Chinese Journal of Aeronautics, 2004, 17(4):207~214 [6] 王钢林,孙义东,武 哲. 飞机总体设计中基于参数的类翼面部件快速统一建模[J] 航空学报, 2002, 23(6):575~578 Wang Ganglin, Sun Yidong, Wu Zhe. Rapid uniform aliform component modeling based on parameter in conceptual aircraft design[J] Acta Aeronautica et Astronawtica Sinica, 2002, 23(6):575~578(in Chinese) [7] 普罗蒂 R W. 军用直升机设计技术[M] 关锡愕等译.北京:航空工业出版社, 1992. 52~63 Prouty R W. Military helicopter design technology[M] Translated by Guan Xi'e. Beijing:Aviation Industry Press, 1992. 52~63(in Chinese) [8] 苏东林,宗国明,吕善伟. 武装直升飞机雷达散射截面的估算方法[J] 北京航空航天大学学报,1994, 20(3):248~252 Su Donglin, Zong Guoming, Lv Shanwei. The method of calculating radar cross section of fighting heliocpters[J] Journal of Beijing University of Aeronautics & Astronautics, 1994, 20(3):248~252 (in Chinese) -
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