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本文研究了用于最小长度轨道转移飞行器圆环形液氧贮箱1/4缩比模型的流体晃动力学。比较了在1g重力加速度下从实验和分析得出的晃动模态的等效力学模型。介绍了用防晃板减小晃动力的测量,并导出了贮箱内装有防晃板时晃动模态的等效力学模型。用数字频谱分析给出了测量晃动动力的有效方法。叙述了在晃动运动中观察到的非线性效应。
In this paper, we study the fluid sloshing mechanics for the quarter-ratio model of annular liquid oxygen tank for the minimum length orbit transfer aircraft. The equivalent mechanical model of rocking mode obtained from experiment and analysis under 1g of gravitational acceleration is compared. The measurement of the sloshing force with the anti-sloshing plate is introduced, and the equivalent mechanical model of the sloshing mode with the anti-sloshing plate in the tank is deduced. An effective method of measuring sloshing power is given by digital spectrum analysis. The non-linear effects observed during sloshing are described.