大型液体火箭在初步设计阶段就要求得到液体推进剂在贮箱内的运动特性,特别是液体运动的最简单、最基本的一阶等效力学模型及相应的阻尼值,以满足控制系统的稳定要求。通常,解决液体晃动问题的途径,是在贮箱内布置防晃挡板来提高液体晃动的阻尼和频率。为此必须通过多次晃动试验来选择挡板形状、尺寸和位置。 In the preliminary design stage, the large liquid rocket requires the movement characteristics of the liquid propellant in the tank, especially the simplest and most basic first-order equivalent mechanical model of the liquid and the corresponding damping value to meet the requirements of the stability of the control system Claim. In general, the solution to the problem of liquid sloshing is to place a baffle in the tank to increase the damping and frequency of liquid sloshing. For this purpose, the shape, size and position of the baffle must be chosen by shaking tests several times.