| 某大型地效飞行器及其驮运巡航状态气动特性数值模拟 |
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| 引用本文： | 何思元,聂宏,魏小辉,朱恩泽.某大型地效飞行器及其驮运巡航状态气动特性数值模拟[J].航空工程进展,2017,8(1):9-16. |
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| 作者姓名： | 何思元 聂宏 魏小辉 朱恩泽 |
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| 作者单位： | 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;2. 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;南京航空航天大学机械结构力学及控制国家重点实验室,南京210016 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 研究地效飞行器及其驮运负载飞行器巡航状态的气动特性,对大型地效飞行器的研发具有重要意义。采用求解N-S方程的有限体积法,分别针对地效飞行器巡航状态及其驮运负载飞行器巡航状态进行数值模拟分析。结果表明:综合考虑升阻比与阻力的大小,地效飞行器巡航状态机翼的最佳安装角为5.5°;综合考虑升阻比与巡航飞行的安全性、操纵性,地效飞行器巡航状态的最佳飞行高度为8 m;综合考虑巡航经济性以及从巡航状态过渡到分离状态的安全性与可靠性,两机驮运巡航状态下负载飞行器的最佳迎角为3°。
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| 关 键 词： | 地效飞行器 驮运 巡航状态 气动特性 数值模拟 有限体积法 |
| 收稿时间： | 2016/12/1 0:00:00 |
| 修稿时间： | 2016/12/10 0:00:00 |
Numerical Simulation of Aerodynamic Characteristics of a large WIG Craft and Its Piggyback Cruise State |
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| He Siyuan,Nie Hong,Wei Xiaohui and Zhu Enze.Numerical Simulation of Aerodynamic Characteristics of a large WIG Craft and Its Piggyback Cruise State[J].Advances in Aeronautical Science and Engineering,2017,8(1):9-16. |
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| Authors: | He Siyuan Nie Hong Wei Xiaohui and Zhu Enze |
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| Institution: | Nanjing University of Aeronautics and Astronautics,State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics,State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics,Nanjing University of Aeronautics and Astronautics |
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| Abstract: | By taking a large WIG craft as the research object, the numerical simulation of aerodynamic characteristics of the cruise state of WIG craft was calculated based on the finite volume method for solving Navier-Stokes equations. The trend of the lift-drag characteristics of WIG craft with the wing incidence angle and the relative flight height was obtained. The best wing incidence angle was selected as 5.5° by the comprehensive consideration between the lift-drag ratio and drag. The best relative flight height was selected as 0.5 by the comprehensive consideration between the lift-drag ratio and the safety and maneuverability of cruise state. By taking a large WIG craft piggybacking a load aircraft as the research object, the numerical simulation of aerodynamic characteristics of the piggyback cruise state was calculated. The trend of the lift-drag characteristics of the piggyback cruise state with the angle of attack of load aircraft was obtained. The best angle of attack of load aircraft of the piggyback cruise state was selected as 3° by the comprehensive consideration between the economy of the piggyback cruise state and the safety and reliability of the transition from cruise state to separation state. |
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| Keywords: | WIG craft piggyback cruise state aerodynamic characteristics numerical simulation finite volume method |
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