Influence of Different Altitudes on the Solid Rocket Contrail Formation in the Near Field

IF 1.1 4区工程技术 Q3 ENGINEERING, AEROSPACE

International Journal of Aerospace Engineering Pub Date : 2023-06-19 DOI:10.1155/2023/6577249

Peigao Zeng, Yi Jiang, Lina Yang, Ying Yang, Song Yan

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引用次数: 0

Abstract

Detecting the infrared characteristics of the contrails is a reasonable approach to tracing the rocket, and the particle properties of the contrails are the basis of the infrared analysis. The conventional numerical approach to obtaining the particle properties is a Euler/Lagrange method or a simple Euler/Euler method, difficultly obtaining more accurate results because it ignores the particle size distribution in parcels or cells. A modified Euler/Euler method is applied to simulate the contrail formation in the near field of a solid rocket motor at different altitudes, which considers the size distribution by adding the first- to second-order particle radius moments based on the simple Euler/Euler method. The simulation results show that the crystals are generated at altitudes from 10 km to 20 km and that the contrails are visible at altitudes from 10 km to 15 km, where the radii of the crystals are from 0.1 μm to 0.3 μm. The visible contrails indicate that aviation vehicles are cruising at altitudes from 10 km to 15 km, and the smaller crystals indicate that the contrails are generated by rockets, not aircraft. Our work can provide important insight for the follow-up infrared analysis of the contrails based on the obtained particle radii.

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不同高度对固体火箭近场反弹道形成的影响

探测轨迹的红外特性是跟踪火箭的合理方法，轨迹的粒子特性是红外分析的基础。获得颗粒性质的传统数值方法是欧拉/拉格朗日方法或简单的欧拉/欧拉方法，由于它忽略了颗粒在包裹或单元中的尺寸分布，因此难以获得更准确的结果。将改进的欧拉/欧拉方法应用于不同高度固体火箭发动机近场轨迹形成的模拟，该方法在简单欧拉/欧拉法的基础上，通过添加一阶到二阶粒子半径矩来考虑尺寸分布。模拟结果表明，这些晶体是在10 km至20 公里，并且在10公里的高度可以看到轨迹 km至15 km，其中晶体的半径为0.1 μm至0.3 μm。可见的轨迹表明航空飞行器在10 km至15 公里，较小的晶体表明轨迹是由火箭产生的，而不是飞机。我们的工作可以根据获得的粒子半径为后续的轨迹红外分析提供重要的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Aerospace Engineering ENGINEERING, AEROSPACE-

CiteScore

2.70

自引率

7.10%

发文量

195

审稿时长

22 weeks

期刊介绍： International Journal of Aerospace Engineering aims to serve the international aerospace engineering community through dissemination of scientific knowledge on practical engineering and design methodologies pertaining to aircraft and space vehicles. Original unpublished manuscripts are solicited on all areas of aerospace engineering including but not limited to: -Mechanics of materials and structures- Aerodynamics and fluid mechanics- Dynamics and control- Aeroacoustics- Aeroelasticity- Propulsion and combustion- Avionics and systems- Flight simulation and mechanics- Unmanned air vehicles (UAVs). Review articles on any of the above topics are also welcome.