高马赫数无人机概念设计的外形参数化建模  

Parametric Geometry Modeling for Conceptual Design of High Supersonic Unmanned Aerial Vehicles

作　　者：有连兴 余雄庆[1] 欧阳星[1] 

机构地区：[1]南京航空航天大学飞行器先进设计技术国防重点学科实验室,南京210016

出　　处：《南京航空航天大学学报》2014年第3期425-432,共8页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国防基础科研计划资助项目;中央高校基本科研业务费专项科研(NZ2012014)资助项目

摘　　要：设计出一类推进系统与气动布局一体化的临近空间高马赫数(Ma=3.5)无人机概念方案。为了能对这类无人机概念方案进行快速设计与评估,需要建立一种精确的、简便的表达概念方案的参数化几何模型。应用形函数/类函数、拉格朗日插值多项式和B样条曲线方法,建立了一种能够精确描述该类无人机概念方案的数学模型。基于该数学模型,应用CATIA软件二次开发方法,用VB编程实现了无人机概念方案的三维外形的自动生成。选取双后掠机翼、单后掠机翼和准菱形机翼3种典型的高马赫数气动布局方案作为测试算例,测试结果表明所开发的VB程序能够快速且足够精确地创建高马赫数无人机概念方案的三维外形。A set of conceptual sketch for the near-space high supersonic （Ma=3.5） unmanned aerial vehicle （UAV） is derived from the idea of integration of aerodynamic configuration and propulsion system. An accurate and straight-forward parametric geometry modeling for the near-space high supersonic UAV is essential to rapidly implement and evaluate the conceptual design. A geometry parameterization method for accurate description of the UAV configuration is proposed by use of shape function/class function transformation, Lagrange interpolation polynomial and B-spline curve. Based on the geometry parame- terization, a code written in visual basic （VB） language is developed through the creation of macros from the CATIA application, which is used to implement the automatic generation of the 3-D geometry model of UAV. Three configurations of the high supersonic UAVs, including double swept wing, single swept wing and quasi-rhombus wing, are used to validate the method. The results show that accurate 3-D ge- ometry models for all the UAV configurations can be rapidly and automatically created by the VB code.

关 键 词：无人机 临近空间 超声速 概念设计 外形参数化 

分 类 号：V221.3[航空宇航科学与技术—飞行器设计]