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First Korea Space Launch Vehicle Kick Motor Movable Nozzle Motion

机译:韩国首个太空运载火箭踢脚马达可移动喷嘴运动

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In this study, nozzle rotational angle was obtained from measuring axial displacements from displacement gauges. Compensation equations for offaxis and slip effects of the displacement gauge were newly developed to obtain the nozzle rotational angle. A thrust vector control stroke test was conducted to provide linear coefficients related to pitch, yaw, and inclinometer angles with respect to the thrust vector control input voltage. The convergence of the compensation equations was satisfied with a percent relative error, which was under 0.0004%. From the compensation equations and the linear coefficients, the nozzle rotational angle history was accurately obtained in the thrust vector control scenario test within 0.01 deg. However, there was an offset in the rotational angle in the ground firing tests. This offset was within the maximum 0.04 deg, and it was caused by the deformation of the end position of the support beam, which was induced by combustion pressure.
机译:在这项研究中,通过测量位移计的轴向位移来获得喷嘴旋转角度。新开发了位移计的偏心和滑移效应的补偿方程,以获得喷嘴旋转角度。进行了推力矢量控制冲程测试,以提供与相对于推力矢量控制输入电压的俯仰,偏航和倾角仪角度有关的线性系数。补偿方程的收敛满足于相对误差百分比,该误差小于0.0004%。根据补偿方程和线性系数,可以在推力矢量控制方案测试中精确地获得0.01度内的喷嘴旋转角度历史记录。但是,在地面射击测试中,旋转角度存在偏差。该偏移量在最大0.04度以内,这是由燃烧压力引起的支撑梁末端位置变形引起的。

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