Self-decoupling aeroengine vector force measurement bench

Abstract

The invention relates to an aero-engine vector force test stand capable of realizing self-decoupling. The stand comprises a fixed rack, a moving rack and force measurement assemblies, wherein the fixed rack is used for supporting the moving rack and the force measurement assemblies, the moving rack is used for mounting a test engine, a push force vector generated by the engine is transmitted through the moving rack to each force measurement assembly, the force measurement assembly comprises a flexible element and a force measurement sensor and is used for connecting the moving rack and the fixed rack and measuring the push force vector generated by the engine, a borne axial force is converted by the force measurement assembly into a voltage signal, according to a mapping relationship between the push force vector and the measured voltage signal, the push force vector of the engine can be measured. According to the aero-engine vector force test stand, a combined one-dimensional self-decoupling force measurement model is applied to a three-dimensional vector force measurement stand, constant rigidity of the stand can be kept and is not influenced by external loads, a push force evaluation and correction process is simplified, push force measurement precision is improved, and the aero-engine vector force test stand is mainly applied to aero-engine tests, rocket engine tests and other vector force measurement measure occasions.

Description

technology field [0001] The invention belongs to the field of engine thrust testing, in particular to a self-decoupling aeroengine vector force measuring platform. Background technique [0002] With the development of engine technology, vector thrust technology has been widely used in advanced engines. High-performance engines equipped with vector thrust nozzles enable fighter jets to achieve super maneuverability. The vector thrust measurement bench is a platform for vector force measurement. Its main function is to accurately measure the vector thrust generated during the engine test, obtain the components of the vector force through the thrust bench, and measure the vector force. , the evaluation of the direction and magnitude of action. [0003] Selecting an appropriate vector force measurement method, arranging a reasonable number of moving frame constraints and distribution methods, and constructing a reasonable vector force measurement model and its parameter solutio...

AI Technical Summary

Problems solved by technology

Although this error can be partially eliminated by static calibration, the static calibration process cannot fully characterize the deformation and coupling output of the thrust measurement bench during the engine test, which is the main cause of the low measurement accuracy of the existing vector force measurement bench. reason

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