Comprehensive modeling method for aerospace vehicle fusion structure appearance parameters

Abstract

The invention discloses a comprehensive modeling method for aerospace vehicle fused structure appearance parameters. The method comprises the following steps of establishing a computing power data model of an aircraft considering the structure appearance parameters, obtaining a pneumatic / propulsion database of different structure appearance parameters, and determining key parameters of the computing power model by adopting a harmonic analysis method. In combination with six-degree-of-freedom aircraft dynamics and kinematics equations, an integrated model of an aerospace vehicle fused with a multi-profile structure is constructed, then the effectiveness of the constructed equivalent model is verified by adopting goodness of fit, and the influence rule of structural profile parameter change on the performance of the aerospace vehicle model is analyzed. The incidence relation between the flight performance and the structure appearance parameters is constructed, and good technical support is provided for actual engineering design.

Description

technical field [0001] The invention relates to a comprehensive modeling method for fusion structure shape parameters of an aerospace vehicle. Background technique [0002] Future aerospace vehicles will span subsonic, supersonic and airborne speeds to perform various special tasks, and their flight envelopes vary greatly. The use of combined power and variable configuration adjustment technology enables the aircraft to perform different missions, and Each mission segment of a mission has satisfactory flight performance, so it can effectively increase the range and save energy consumption, and at the same time can perform a variety of missions, with higher environmental adaptation, adaptability, attack and survivability. However, there is a strong coupling between the aerodynamics, propulsion, control, and structure of aerospace vehicles. Large external disturbances and unknown flight environments make the model uncertain and difficult to estimate and predict. In addition, t...

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Problems solved by technology

However, there is a strong coupling between the aerodynamics, propulsion, control, and structure of the aerospace vehicle. Large external disturbances and unknown flight environments make the model uncertain and difficult to estimate and predict. In addition, the propulsion mode needs to be adjusted during the motion to meet the The performance requirements in different speed regions have brought new challenges to the design of aerospace vehicle models

[0003] Due to the unique aerodynamic / propulsion integrated configuration of the aerospace vehicle, there is a strong coupling between its aerodynamics, propulsion, structure and control. The traditional modeling method may no longer be suitable for such a complex object, and it is necessary to adopt the fusion structure shape A comprehensive modeling method of parameters, constructing a comprehensive model of the shape parameters of the fusion structure of aerospace vehicles

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