The measurement of aircraft barycenter is a verification of theoretical barycenter and is an important step of aircraft development. In the traditional measurement method of aircraft barycenter, the posture of the aircraft needs to be adjusted manually and is measured by optical instruments. The efficiency of posture adjustment depends on the proficiency of workers, and the accuracy of measurement is not high. In view of these problems of the current barycenter measurement method, this paper aims to propose an aircraft barycenter measurement method based on multi-posture.,In this method, the numerical control locator is used as a supporting part to fix and adjust the aircraft, and the calculation model of aircraft barycenter is established according to the principle of rigid body rotation and the principle of moment balance. Then, the influence of the main error sources on the measurement accuracy of aircraft barycenter is analyzed by Monte Carlo simulation, and the measurement accuracy is compared with that of the barycenter measurement method based on horizontal posture. Finally, the experiment platform of barycenter measurement was built in the laboratory and the experiments were carried out.,The experimental results show that the barycenter measurement method proposed in this paper has obvious advantages in measurement accuracy and efficiency compared with the traditional method.,This method can be used to measure the barycenter of different types of aircraft quickly and automatically.

中文翻译：

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基于多姿态的飞机重心测量方法

飞机重心测量是对理论重心的验证，是飞机研制的重要步骤。在传统的飞机重心测量方法中，飞机的姿态需要手动调整，通过光学仪器进行测量。姿势调整的效率取决于工人的熟练程度，测量的准确度不高。针对目前的重心测量方法存在的这些问题，本文旨在提出一种基于多姿态的飞机重心测量方法，该方法以数控定位器作为支撑部件对飞机进行固定和调整，根据刚体旋转原理和力矩平衡原理建立飞机重心计算模型。然后，通过蒙特卡罗模拟分析了主要误差源对飞机重心测量精度的影响，并与基于水平姿态的重心测量方法的测量精度进行了比较。最后,在实验室搭建了重心测量实验平台并进行了实验。,实验结果表明,本文提出的重心测量方法与传统方法相比,在测量精度和效率上具有明显优势。,方法可以快速、自动地测量不同类型飞机的重心。并与基于水平姿态的重心测量方法的测量精度进行了比较。最后,在实验室搭建了重心测量实验平台并进行了实验。,实验结果表明,本文提出的重心测量方法与传统方法相比,在测量精度和效率上具有明显优势。,方法可以快速、自动地测量不同类型飞机的重心。并与基于水平姿态的重心测量方法的测量精度进行了比较。最后,在实验室搭建了重心测量实验平台并进行了实验。,实验结果表明,本文提出的重心测量方法与传统方法相比,在测量精度和效率上具有明显优势。,方法可以快速、自动地测量不同类型飞机的重心。