Calibration device and thrust test system

Abstract

The present application relates to the field of aerospace technology, in particular to a calibration device and a thrust test system. A calibration device, the target mechanism is arranged on the support assembly and faces the engine; the alignment mechanism is arranged between the target mechanism and the engine; the adjustment mechanism is located at the bottom of the support assembly, when the adjustment mechanism is adjusted, the position of the support assembly will be corresponding Change, when the position of the support assembly changes accordingly, it can drive the position of the target mechanism to change accordingly, and in the process of gradual adjustment, the target mechanism is coaxial with the engine. There is no direct contact between the engine and the support assembly, target mechanism, alignment mechanism and adjustment mechanism, that is, there will be no corresponding friction between the engine and other components; The indirect alignment adjustment of the coaxial mechanism is more suitable for the indirect power test system of the engine, and the device is simple.

Description

technical field [0001] The present application relates to the field of aerospace technology, in particular to a calibration device and a thrust test system. Background technique [0002] According to whether the thruster and the thrust measurement device are fixedly connected, the thrust measurement method can be divided into direct measurement method and indirect measurement method. The direct measurement method is to fix the engine on the force measuring actuator of the thrust frame, and convert the thrust into the corresponding physical quantity. The indirect measurement method transfers the momentum of the engine outlet working fluid to the target, and uses the momentum measured by the target to reflect the thrust. [0003] At present, the indirect measurement method is mostly used for the measurement of micro-thrust electric propulsion engines and micro-jet nozzles, while the direct measurement method is generally used in the field of measurement of small-thrust liquid...

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Problems solved by technology

[0004] However, the direct measurement method has the following problems: (1) the engine needs to be specially designed to match the thrust frame, and the installation steps are cumbersome; (2) the pipelines and lines such as sensor wires, fuel lines, and ignition power lines connected externally to the thruster There will be interference or other effects on the test system; (3) affected by friction, the thrust measurement accuracy is restricted; if the thruster and other components have been assembled, or have been integrated into a complete satellite, it will be difficult to use this (4) The solid connection between the thrust table and the thruster assembly of the direct measurement method leads to a large overall mass, large inertia, and slow response speed, making it difficult to complete dynamic thrust measurement

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