针对平流层飞艇的上升轨迹优化问题,综合热力学模型进行了研究.主要分析了飞艇基本热力学行为,研究了蒙皮及内部气体的能量方程并建立了详细的飞艇动力学和运动学模型.在热力学、动力学和运动学分析的基础上,建立了以飞行时间为优化目标的平流层飞艇的轨迹优化模型.利用直接配点法将轨迹优化问题转化为非线性优化问题,再通过非线性求解器SNOPT(Sparse Nonlinear Optimizer)对不同场景的问题进行最优化轨迹求解.优化结果表明:热力学效应对优化轨迹有较大影响,在上升过程中,太阳能辐射为主要影响因素,另外风场也对换热量有一定影响. Aiming at the problem of ascending trajectory optimization in stratosphere airship, a comprehensive thermodynamic model was studied, which mainly analyzed the basic thermodynamic behavior of the airship, studied the energy equation of skin and internal gas, and established a detailed aerodynamic and kinematic model of the airship. , Kinematics and kinematics analysis, the trajectory optimization model of the airship is established, which takes the flight time as the optimization target.The trajectory optimization problem is converted into a nonlinear optimization problem by using the direct matching point method, and then the non-linear solver SNOPT (Sparse Nonlinear Optimizer) to optimize the trajectory of different scenes.The optimization results show that: the thermodynamic effect has a greater impact on the trajectory of the optimization, in the process of rising, the solar radiation as the main factor, the other wind field also on the heat transfer Have a certain influence.