高空发动机试车台矢量推力现场动态校准技术

根据发动机试车台矢量推力现场动态校准需求，通过系统化论证，针对试车台的技术要求及校准需求，解决发动机试车台现场实际使用和实验室校准条件不同造成的附加测量误差、试验台推力无法整体校准等问题。文中提出了利用摆锤式动态力加载装置实现标准矢量力加载的方案，为了验证设计方案的可行性，利用现有的设备研究验证校准方案，通过试验和分析给出了校准不确定度。结果表明：该方案动态性能优异，响应迅速，动态校准不确定度为2.2%，能满足高空发动机试车台矢量推力测试的需求，为后续进一步准确测试矢量推力提供了依据。

Dynamic Calibration Technology of Altitude Vector Thrust Test Cell with Field Calibration

To meet the need of calibrating the vector thrust test cell with field dynamic calibration, the paper briefly introduces the necessity of test cell thrust, analysed the error between laboratory calibration and practical use, solved the problem of vector thrust test cell holistic calibration. A pendulum bob calibration system used for calibrating vector thrust test cell is introduced. To prove the measurement scheme, the dynamic parameters are acquired by experimentations. The experimental results indicate that the calibration system''s dynamic property is excellent good, it responds quickly to dynamic signals without lag or oscillation. The uncertainty of the measuring results of the dynamic calibration is 2.2%, which can satisfy the need of dynamic calibration for the vector thrust test cell.