CAJ | 학술논문

以压电石英测力平台为核心,建立起一套小力值火箭发动机推力测量的静态标定装置,解决了静态标定中液压加载出现的问题.通过实验获得了测力平台的各项静态性能指标,并对该静态标定系统进行了不确定度分析.结果表明:该压电石英测力平台具有良好的静态特性,其线性度、重复性指标都在1%以内,且该静态标定系统测量结果的不确定度远小于5%,测量精度比较高.因此,该测力平台的各项静态指标能够满足小力值火箭发动机的推力测试要求.
이압전석영측력평태위핵심,건립기일투소력치화전발동궤추력측량적정태표정장치,해결료정태표정중액압가재출현적문제.통과실험획득료측력평태적각항정태성능지표,병대해정태표정계통진행료불학정도분석.결과표명:해압전석영측력평태구유량호적정태특성,기선성도、중복성지표도재1%이내,차해정태표정계통측량결과적불학정도원소우5%,측량정도비교고.인차,해측력평태적각항정태지표능구만족소력치화전발동궤적추력측시요구.
Based on the piezoelectric quartz force-measuring platform,a suit of static calibration apparatus of small-power rocket motor thrust measurement is established.The problem of hydraulic load is solved.The static parameters of the force-measuring platform are acquired by experiments.The uncertainty of the static calibrating system is evaluated.The experimental results indicate that the piezoelectric quartz force-measuring platform has good performance.The parameters of linearity and repeatability are all less than 1%,and the uncertainty of the measuring results of the static calibrating system is far less than 5%,which means the system has high measuring accuracy.Therefore,the static parameters of the force-measuring platform all can satisfy the need of small-power rocket motor thrust measurement.