环形涵道串列翼空气动力技术的研究

Study on Aerodynamic Technology of Ring Culvert Tandem Plumes

摘要: 本论文在旋翼空气动力原理基础上，提出截取旋翼升力翼尖效应部分桨叶扫掠圆环面、重新串列布置羽翼在涵道内做回转运动的改进思路，形成圆环形涵道内置串列翼空气动力技术方案。该方案涵道宽度接近或超过串列翼翼展，较小的翼尖间距最大限度抑制了串列翼翼尖环流，降低了诱导阻力，从而提升空气动力效率；该方案同时以较小的投影占地面积，解决了升力总面积问题，在较小的运动速度下获得较大的动力输出，提升了系统运输效率。通过重建圆环形涵道内置串列翼空气动力数学计算模型，对比计算分析相同参数孤立机翼、旋翼及圆环形涵道内置串列翼空气动力效率。通过环形涵道串列翼同时具备空气动力效率和运输效率高效、垂直起降性能和超低空安全性能、良好的雷达外形隐形和声学隐形等性能分析，做出环形涵道串列翼空气动力技术，是轴驱动旋翼空气动力的颠覆性技术的结论，同时做出是面向未来空中交通工具技术平台，以及与道路交通工具汽车展开全面竞争并能取得优势的前瞻性展望。

Abstract: On the basis of the aerodynamic principle of the rotor, this paper puts forward an improved idea to intercept the rotor lift wing tip effect part of the rotor blade to sweep round circle and to ar-range the wing in the culvert. The width of the scheme is close to or beyond the wing span of the tandem plumes, and the smaller tip spacing maximizes the suppression of the tandem plumes tip circulation, reducing the induced drag and improving the aerodynamic efficiency. The scheme also solves the problem of the total lift area with smaller projection area, which is larger at a smaller velocity. The power output of the system improves the efficiency of the system transportation. The aerodynamic efficiency of the tandem plume in the same plume, rotor and ring shaped culvert is calculated and analyzed by the reconstruction of the aerodynamic mathematical model of the tandem plumes in the circular culvert. Through the analysis of aerodynamic efficiency and efficient transport efficiency, vertical landing and landing performance and ultra low altitude safety performance, good radar profile stealth and acoustic stealth, the annular culvert tandem plumes is the conclusion of the annular culvert tandem plumes aerodynamic technology, which is the conclusion of the subversive technology of the air power of the shaft driven rotor. It is a forward-looking perspective for future air traffic vehicle technology platform, and comprehensive competition with road vehicles, vehicles and advantages.