航空学报 > 2014, Vol. 35 Issue (2): 408-416   doi: 10.7527/S1000-6893.2013.0262

基于重力储能的太阳能飞机飞行轨迹研究

马东立, 包文卓, 乔宇航   

  1. 北京航空航天大学 航空科学与工程学院, 北京 100191
  • 收稿日期:2013-03-19 修回日期:2013-05-17 出版日期:2014-02-25 发布日期:2013-06-28
  • 通讯作者: 马东立,Tel.:010-82338635 E-mail:madongli@buaa.edu.cn E-mail:madongli@buaa.edu.cn
  • 作者简介:马东立 男,博士,教授。主要研究方向:飞行器总体设计、飞行力学、隐身技术研究。Tel:010-82338635 E-mail:madongli@buaa.edu.cn;包文卓 男,硕士研究生。主要研究方向:飞行器总体设计。Tel:010-82338635 E-mail:baowenzhuo@sina.com;乔宇航 男,博士研究生。主要研究方向:飞行器总体设计。Tel:010-82338635 E-mail:qyuhangxp@hotmail.com
  • 基金资助:

    国家“863”计划(2012AA7052002)

Study of Flight Path for Solar-powered Aircraft Based on Gravity Energy Reservation

MA Dongli, BAO Wenzhuo, QIAO Yuhang   

  1. School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
  • Received:2013-03-19 Revised:2013-05-17 Online:2014-02-25 Published:2013-06-28
  • Supported by:

    National High-tech Research and Development Program of China (2012AA7052002)

摘要:

基于重力储能原理,研究了太阳能飞机变高度飞行轨迹及其应用效果。描述了变高度轨迹的具体组成部分及各部分的运动方式,建立了各部分轨迹和时间节点的物理数学模型,提出了适用于变高度轨迹的太阳能飞机总体参数设计方法。得到了给定设计指标下的飞行轨迹和需用功率曲线,并与定高度轨迹对比,研究了相关技术参数对变高度轨迹应用效果的影响。研究结果表明:变高度轨迹可以有效减小储能电池放电时间和机翼面积;对于不同设计高度均存在最优的爬升高度,使得机翼面积最小;设计高度越高,设计日期越偏离夏至日,储能电池能量密度越小,推进系统功重比越大,变高度轨迹的应用效果越明显。

关键词: 太阳能飞机, 飞行轨迹, 重力储能, 机翼面积, 放电时间

Abstract:

Varied-height flight paths for solar-powered aircraft and their application are studied based on the theory of gravity energy reservation. Detailed components of varied-height paths and their motion modes are described and a mathematical-physical model of each component and time node is established. Furthermore, a general-parameters design method for a solar-powered aircraft with varied-height paths is introduced. The flight path and power curve for a specific design index are plotted, and the influence of some technology parameters on the application of varied-height paths is studied through comparing with constant-height paths. The results show that varied-height paths can effectively reduce the discharge time of the energy storage battery and wing area. There exists an optimal climbing height for each design height, which can minimize the wing area. The higher the design height is, the farther away the design date is from Summer Solstice, the lower is the energy density of the energy storage battery and the higher is the power-weight ratio of the propulsion system, the more effective is the application of a varied-height path.

Key words: solar-powered aircraft, flight path, gravity energy reservation, wing area, discharge time

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