Strain thrust testing device and method for low-thrust engine

Abstract

The invention provides a strain thrust testing device and method for a low-thrust engine, and particularly belongs to the technical field of testing devices. The thrust frame assembly is arranged in the vacuum cabin, so that the device can accurately measure the thrust of different models of engines, and the inherent frequency and the measurement precision of the system are considered; high-temperature protection design and overload protection design of the system are carried out through the heat insulation baffle and the cooling water jacket, so that the influence of high-temperature fuel gas and the impact of installation torque are reduced, the stability of the thrust testing system is improved, and the service life of the thrust testing system is prolonged; the device comprises a thrust frame assembly and a thrust sensor. The thrust frame assembly is installed in the vacuum cabin through a supporting frame. The thrust frame assembly comprises a fixed frame, a movable frame and a force transmission sleeve. The movable frame is installed on the inner side of the fixed frame, the force transmission sleeve is installed on the inner side of the movable frame, the engine body is installed on the force transmission sleeve, the four cantilever beams are fixedly installed on the outer side of the movable frame at equal angles, and the thrust sensors are pasted on the cantilever beams.

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