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首页> 外文期刊>Journal of Aerospace Sciences and Technologies >DEVELOPMENT OF MATHEMATICAL MODEL OF A GENERIC RLV FOR REENTRY MISSION SIMULATION
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DEVELOPMENT OF MATHEMATICAL MODEL OF A GENERIC RLV FOR REENTRY MISSION SIMULATION

机译：通用RLV数学模型的建立。

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摘要

This paper presents the nonlinear models for simulating the atmospheric reentry dynamics of a generic Reusable Launch Vehicle (RLV). The six degrees-of-freedom flight dynamics is modeled with the overall objective of minimum number of constraints without increasing the complexity of equations. This requirement leads to the definition and use of a number of frames of reference for describing different aspects of the dynamics of the RLV. In this context, the inertial reference frame is used for translation motion, while body frame and wind frame are used to describe the forces acting on the RLV. Further, quaternion representation is used for vehicle attitude motion in order to avoid computational singularities in respective kinematic model equations. The vehicle complex aerodynamic characteristics are modeled using the coefficient approach in order to simplify interpretation of available data while the propulsion system model takes into account the atmospheric conditions. The vehicle subsystem models of sensors, navigation system and actuators are also included. The operating environment models viz., Earth's atmosphere, Earth's shape and gravitational acceleration are also modeled appropriately. The model presented is for a generic RLV and has the potential for application to RL Vs of widely different configurations.
机译：本文提出了用于模拟通用可重复使用运载火箭（RLV）的大气再入动力学的非线性模型。六自由度飞行动力学的建模目标是最小数量的约束，而不会增加方程的复杂性。该要求导致定义和使用多个参考框架来描述RLV动力学的不同方面。在这种情况下，惯性参考系用于平移运动，而车身架和风架用于描述作用在RLV上的力。此外，四元数表示用于车辆姿态运动，以避免各个运动学模型方程中的计算奇异性。使用系数方法对车辆的复杂空气动力学特性进行建模，以简化对可用数据的解释，而推进系统模型则将大气条件考虑在内。还包括传感器，导航系统和执行器的车辆子系统模型。还可以对操作环境模型进行建模，即地球的大气，地球的形状和重力加速度。提出的模型是针对通用RLV的，并且有潜力应用于配置广泛不同的RLV。

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