Solid propellant smog characteristic virtual evaluation method based on plume field

Abstract

The invention discloses a solid propellant smog characteristic virtual evaluation method based on a plume field. The method includes the steps of (1) setting and storing an original parameter, (2) calculating an energy characteristic parameter, (3) calculating the plume field of an engine, (4) calculating a first-time-smog feature value, calling a calculation model of a first-time-smog shielding rate and by reference to the calculation result of the plume field, calculating first-time-smog shielding rates k at all positions of a spray pipe axis in the plume field of the engine after an evaluated solid propellant is combusted, and (5) calculating a second-time-smog feature value, calling a calculation model of relative humidity of second-time-smog, and by reference to the calculation result of the plume field, calculating the relative humidity RHamb of the second-time-smog at all positions of the spray pipe axis in the plume filed of the engine after the evaluated solid propellant is combusted. The method is simple in step, reasonable in design, convenient to achieve, good in use effect, and capable of effectively overcoming the defects that when existing solid propellant smog signal performance is evaluated, labor and material investment is large, the cycle is long and a large number of tests need to be conducted.

Description

technical field [0001] The invention belongs to the technical field of evaluation of smoke characteristics of solid propellants, in particular to a method for virtual evaluation of smoke characteristics of solid propellants based on a plume field. Background technique [0002] With the development of mechanization and information technology, more and more modern weapon systems adopt automatic tracking, control and guidance methods such as radar and photoelectricity. Combat effectiveness of projectile weapon systems. But at the same time, the harmfulness of smoke and flames during the launching and carrying of missile weapons is becoming increasingly apparent, which has a great impact on the informatization, intelligence, and stealth performance of the weapon system, and has serious consequences for the rapid, precise strike, and stealth functions of the weapon system. It has caused serious adverse effects, and has even become the main technical bottleneck restricting the no...

AI Technical Summary

Problems solved by technology

However, in the process of developing and evaluating low-signature propellants, it takes a lot of manpower and material resources to solve the problem, and the development cycle is greatly extended, which brings huge economic losses and political influence. Therefore, there is an urgent need for a virtual test method for solid Rapid evaluation of propellant smoke characteristics

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