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Fast calculation and dynamic simulation method of aircraft tail flame infrared radiation

A fast calculation, infrared radiation technology, applied in design optimization/simulation, calculation, instrument, etc., can solve problems such as poor real-time performance, inability to apply dynamic simulation, and difficulty in simulation calculation.

Inactive Publication Date: 2017-04-26
西安天圆光电科技有限公司
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for fast calculation and dynamic simulation of aircraft exhaust infrared radiation, so as to solve the problems in the prior art that the simulation calculation is difficult, the real-time performance is poor, and it cannot be applied to dynamic simulation.

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  • Fast calculation and dynamic simulation method of aircraft tail flame infrared radiation
  • Fast calculation and dynamic simulation method of aircraft tail flame infrared radiation
  • Fast calculation and dynamic simulation method of aircraft tail flame infrared radiation

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Embodiment Construction

[0056] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0057] The invention discloses a method for fast calculation and dynamic simulation of aircraft exhaust infrared radiation, such as figure 1 As shown, it specifically includes the following steps:

[0058] Step 1: By establishing a standardized model of the aircraft engine, and obtaining the internal flow field parameters of the aircraft engine;

[0059] like figure 2 As shown, the three-dimensional model of the airframe is established by software such as Creator, and the engine simulation software such as GASTURB is established to obtain the typical aircraft engine model in the software, and the different engine operating states in the same state and the same engine operating state in different flight states Carry out simulation and calculate relevant parameters of the engine internal flow field;

[0060] The specific method is as follow...

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Abstract

The present invention discloses a fast calculation and dynamic simulation method of aircraft tail flame infrared radiation. The method comprises a first step of building a standard model of an aircraft engine, and acquiring an internal flow field parameter of the aircraft engine; a second step of inputting the internal flow field parameter acquired in the first step into FLUENT software, and acquiring high temperature tail flame temperature field distribution data of the aircraft by using the FLUENT software; a third step of calculating to acquire a layer spectral transmittance and a layer spectral radiation brightness of high temperature tail flame by using a CG spectral method according to the high temperature tail flame temperature field distribution data obtained in the second step; and a forth step of assigning the layer spectral transmittance and the layer spectral radiation brightness of the high temperature tail flame acquired in the third step to an OSG particle system, and realizing high dynamic real-time simulation of the aircraft tail flame by using the OSG particle system. Through adoption of the method, problems in the prior art that simulation has high calculation difficulty, poor real-time performance and cannot be applied to dynamic simulation are solved.

Description

【Technical field】 [0001] The invention belongs to the technical field of infrared imaging computer simulation, and in particular relates to a fast calculation and dynamic simulation method for infrared radiation of an aircraft tail flame. 【Background technique】 [0002] Infrared imaging detection technology adopts passive working mode, has the characteristics of strong concealment, strong anti-interference ability, high measurement accuracy and all-weather working ability, and has been widely used in infrared imaging precision guided weapon systems. With the rapid development of infrared imaging guidance technology, infrared precision guided air-to-air, ground-to-air and other surface-to-air missile weapon systems, which target various types of combat aircraft targets, dominate the current and future air combat arena like a "sword in the sky". [0003] my country has made remarkable achievements in the research of infrared imaging guidance technology, but due to the limitati...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 李少毅李蕊李帅张凯杨尧
Owner 西安天圆光电科技有限公司
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