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°。
In order to analyze the aerodynamic characteristics of the cruise state of a large WIG craft and the piggyback cruise state of a large WIG craft carrying a load aircraft.The numerical simulation of the cruise state of a large WIG craft and the piggyback cruise state is calculated based on the finite volume method for solving Navier-Stokes equations.The results of the numerical simulation show that the optimum wing incidence angle of the WIG craft of the cruise state is 5.5°by the comprehensive consideration between the lift-drag ratio and drag.The optimum flight height of the WIG craft of the cruise state is 8 m by the comprehensive consideration between the lift-drag ratio and the safety and maneuverability of cruise state,the optimum angle of attack of load aircraft of the piggyback cruise state is 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.
作者
何思元
聂宏
魏小辉
朱恩泽
He Siyuan Nie Hong Wei Xiaohui Zhu Enze(Key Laboratory of Fundamental Science for National Defense-advanced Design Technology of Flight Vehicle, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)
出处
《航空工程进展》
CSCD
2017年第1期9-16,共8页
Advances in Aeronautical Science and Engineering
基金
国家自然科学基金(11372129)
江苏高校优势学科建设工程资助项目
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
WIG craft
piggyback
cruise state
aerodynamic characteristics
numerical simulation
finite volume method
