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首页> 外文期刊>International journal of aerospace engineering >Theoretical and Numerical Studies of Dynamic Scaling of a Six-Degree-of-Freedom Laser Propulsion Vehicle
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Theoretical and Numerical Studies of Dynamic Scaling of a Six-Degree-of-Freedom Laser Propulsion Vehicle

机译：六自由度激光推进器动力定标的理论和数值研究

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To estimate the flight reactions of a full-scale vehicle from reduced-scale tests, we constructed a scaling theory for the vehicle size, input energy, moment of inertia, and pulse frequency needed to maintain dynamic equivalence between a laboratory-scale and full-scale launch of a laser propulsion vehicle. The dynamic scaling law for a single pulse was constructed using translational and angular equations of motion. The analytical scaling was confirmed for a single-pulse incident using a fluid-orbit coupling simulator for the interaction between the blast wave and the vehicle. Motion equivalence was maintained for multiple pulses by adjusting the repetition frequency of the pulse incident to correct for the effect of aerodynamic drag during the free flight of the pulse-to-pulse interval. The flight of a full-scale vehicle can be estimated for single- and multiple-pulse operations from the flight data for a small-scale vehicle using the proposed scaling theory, which provides correlations between the characteristics of small-scale and large-scale flight systems. Small-scale tests were shown to be useful in estimating the flight of a full-scale vehicle using dynamic scaling theory.
机译：为了通过缩小规模的测试来估算全尺寸飞行器的飞行反应，我们针对车辆尺寸，输入能量，惯性矩和脉冲频率建立了一个缩放理论，以维持实验室尺寸与全尺寸之间的动态等效性。大规模发射激光推进器。使用运动的平移和角度方程构造单个脉冲的动态缩放定律。对于爆炸波与飞行器之间的相互作用，使用流体轨道耦合模拟器确定了单脉冲入射的解析尺度。通过调整入射脉冲的重复频率来校正多个脉冲的运动等效性，以校正脉冲间隔之间自由飞行期间空气阻力的影响。使用提出的比例尺理论，可以从小型飞机的飞行数据中针对单脉冲和多脉冲操作估计满规模飞行器的飞行，该理论提供了小型飞行和大型飞行的特征之间的相关性系统。事实表明，小规模试验对于使用动态缩放理论估算完整尺寸车辆的飞行非常有用。

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