Load analysis modeling method for axisymmetric thrust vectoring nozzle actuating system

Abstract

The invention discloses a load analysis modeling method for an axisymmetric thrust vectoring nozzle actuating system. Spatial poses of an actuating system A9 steering control ring, a pull rod and expansion adjusting sheets in a current deflection state are coupled with aerodynamic load characteristics of the expansion adjusting sheets, and mechanical analysis of the actuating system is carried out, so that a vector deflection loaded analysis mechanical model is established. Compared with the prior art, the method can accurately describe the loading condition of the axial symmetry thrust vectoring nozzle A9 actuating system in the actual working state, and therefore an important theoretical basis is provided for design and test of the axial symmetry thrust vectoring nozzle A9 actuating system.

Description

technical field [0001] The invention belongs to the field of system modeling and simulation in aerospace propulsion theory and engineering, and specifically relates to a loading analysis modeling method for an axisymmetric vector nozzle actuation system. Background technique [0002] With the demand of fighter jets for high speed and high maneuverability, traditional rudder surface control can no longer meet the combat needs, and thrust vectoring technology emerges spontaneously. On November 6, 2018, the stunning appearance of the J-10B thrust vectoring verification aircraft at the Zhuhai Air Show brought the axisymmetric vectoring nozzle technology (AVEN) into the public view, and a series of difficult tactical actions showed the impact of the axisymmetric vectoring nozzle technology on It has great potential to enhance the maneuverability and short take-off and landing capability of fighter jets. [0003] Axisymmetric vector nozzle technology was first proposed by GE in t...

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Problems solved by technology

[0004] The above research is limited to the dynamic modeling and simulation under the non-working state of the vector nozzle in the atmospheric environment. The research on the dynamic characteristics of the vector deflection under the actual working state of the engine, especially the load analysis of the A9 actuating system that realizes the vector deflection has not yet been carried out. involve

And in actual engineering, since the driving force of the actuating cylinder of the actuating system is unknown, the accuracy of the loading test of the vector deflection characteristics under the simulated engine working state under the ground state cannot be guaranteed, which may lead to the design of the hydraulic actuating system in the vector The continuous deflection requirement cannot be met in the deflection test run

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