Abstract

Flutter of unmanned aircraft at hypersonic speeds is one of the understudied problems facing the designers of hypersonic vehicles. Modern methods for calculating aeroelastic stability either solve simplified versions of real problems (for example, without taking physicochemical phenomena into account) or require high computing power. This paper describes a methodology for calculating the supersonic and hypersonic flutter of an aircraft using standard engineering software and additionally developed software modules. The justification of the need to refine the existing methods for calculating the aircraft aeroelasticity taking into account the real geometry of the structure and with the possibility of accounting for physicochemical processes occurring in the air during the movement of bodies at high speed is provided. The theoretical principles of calculating aeroelastic stability taking into account these factors are developed, and three examples of calculating the aeroelastic stability of model objects are given.

中文翻译：

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无人机高超音速下机身及薄壁结构气动弹性现象研究

摘要

无人机在高超音速下的颤振是高超音速飞行器设计者面临的研究不足的问题之一。计算气动弹性稳定性的现代方法要么解决实际问题的简化版本（例如，不考虑物理化学现象）要么需要高计算能力。本文描述了一种使用标准工程软件和额外开发的软件模块计算飞机超音速和高超音速颤振的方法。提供了需要改进用于计算飞机气动弹性的现有方法的理由，其中考虑了结构的真实几何形状，并提供了解释物体高速运动期间在空气中发生的物理化学过程的可能性。