不间断飞行太阳能飞机总体参数设计研究

Design and research for conceptual parameters of solar-powered non-stop airplanes

不间断飞行太阳能飞机是以太阳能作为飞行动力并能储存白天采集的太阳能完成越夜飞行的飞机,这种飞机力求通过减少、减免起降和补给维护来降低全寿命周期使用成本。建立了由"建立能量链"、"建立质能关系"和"连接总质量和能量链起点完成迭代环"三步组成的不间断飞行太阳能飞机总体参数设计的一般方法。为了减少常数化的升力系数和零升阻力系数在布局的气动潜力上造成的浪费,推导了用于耦合与不间断飞行能力相关的布局参数的升力系数和零升阻力系数估算模型,并对上述方法加以改善。以"Skysailor"作为实例考察新方法的应用效果,结果表明:新方法拓展了设计域、增强了设计方案的负载能力。

Non-stop solar-powered airplanes utilize solar energy as flight dynamics, meanwhile storing col- lected solar energy in daytime to support flying at night. These planes strive to reduce life-cycle use-cost through minimizing, even avoiding taking off and landing, as well as replenishing maintainence. This pa- per established a general methodology for conceptual parameters design of these planes, based on the combination of three steps, i.e. energy chain installment, mass-energy relation establishment, and link- ing overall mass with the starting point of energy chain, which finishes up the iteration loop. To decrease the dissipation of aerodynamics layout, causing by constant lift coefficients and zero drag coefficients, we deduced an estimation model, targeting coupling the upper fly capability related coefficients, by which improvements achieved comparing to the general method. An case study on ＂Skysailor＂ demonstrated our new method＇ s application effects, our solution enlarged design space, enhanced the load capability of a given design plan.