Implementation method of near-space vehicle model verification and simulation

Abstract

The invention relates to the technology of the near space aerocraft. In order to provide a system-level consistency check novel model verification system output on the basis of the dynamic time sequence of the near space aerocraft model, give qualitative model verification based on the monte carlo method, carry out risk analysis to the model, comprehensively carry out consistency check to a model to be verified and give a visual verification criterion, the invention adopts the technical scheme that the verification and simulation realization method for a near space aerocraft model comprises the following steps of: (1) on the basis of the monte carlo simulation method, carrying out qualitative verification; (2) carrying out the qualitative model verification based on a time domain analysis method; and (3) carrying out qualitative model verification based on risk analysis, taking a model parameter as a risk to give a visual qualitative model verification criterion, giving a model comparison standard when a plurality of models to be verified exist, verifying whether the model can be safely used, and giving a safe-use range. The verification and simulation realization method for a near space aerocraft model, which is disclosed by the invention, is mainly applied to the design of the near space aerocraft.

Description

technical field [0001] The invention relates to the technology of near-space vehicles, and relates to the problem of model verification in the field of aerospace. It mainly involves qualitative and quantitative model verification of complex models of near-space vehicles. Specifically, it relates to a method for implementing model verification and simulation of a near-space vehicle. Background technique [0002] The structural design, material properties, mechanical properties, and the impact of high-speed air fluid on the body of a near-space vehicle are different from those of projectile aircraft or traditional aircraft. In order to describe the motion laws of near-space vehicles in detail and clearly, it is necessary to fully describe the hypersonic fluid characteristics, engine characteristics, structural elastic characteristics, aerodynamic / propulsion / structural coupling characteristics, actuator characteristics, etc. during the modeling process. Model verification wor...

AI Technical Summary

Problems solved by technology

[0004] At present, the research on model verification has just started and has not been separated from the modeling work, especially for complex near-space vehicles, there is a lack of suitable model verification methods, and there is an urgent need for a qualitative and Theoretical System of Model Validation for Quantitative Analysis Results

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