Computational Fluid Dynamics Analysis of the Infrared Emission From a Generic Hypersonic Glide Vehicle

IF 0.7 Q3 INTERNATIONAL RELATIONS Science & Global Security Pub Date : 2022-09-02 DOI:10.1080/08929882.2022.2145777
G. Candler, I. Leyva
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引用次数: 4

Abstract

Abstract Hypersonic boost-glide vehicles are designed to fly long distances in the upper atmosphere. They are reported to have the potential to evade ballistic missile early warning systems and to maneuver as they fly toward their target. A recent analysis by Tracy and Wright in Science & Global Security claimed to show that typical boost-glide vehicles produce significant infrared signatures that would be readily detectable with existing U.S. satellites and therefore questioned the potential advantages of hypersonic weapons over existing missiles. The prior analysis is revisited and several inconsistencies in the underlying assumptions are described. A detailed computational fluid dynamics analysis predicts typical infrared signatures to be significantly lower than those predicted by Tracy and Wright. As a result, these signatures would fall below the detection threshold of legacy U.S. Defense Support Program satellites but remain detectable by the more modern sensors from the Space-Based Infrared System. There are two significant issues with the prior analysis: an incorrect aerodynamic angle of attack was used, and the turbulent heat transfer rate correlation used to predict the surface temperature is inaccurate at the conditions studied.
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通用高超声速滑翔飞行器红外发射的计算流体动力学分析
摘要高超声速助推滑翔飞行器是为在高层大气中进行长距离飞行而设计的。据报道,它们有可能避开弹道导弹预警系统,并在飞向目标时进行机动。特雷西和赖特最近在《科学与全球安全》杂志上发表的一份分析报告称,典型的助推滑翔飞行器会产生明显的红外信号,这很容易被现有的美国卫星探测到,因此质疑高超音速武器相对于现有导弹的潜在优势。对先前的分析进行了重新审视,并描述了基本假设中的几个不一致之处。一项详细的计算流体动力学分析预测,典型的红外特征明显低于特雷西和赖特的预测。因此,这些特征将低于传统的美国国防支持计划卫星的探测阈值,但仍然可以被来自天基红外系统的更现代的传感器探测到。先前的分析存在两个重要问题:一是使用了不正确的气动迎角,二是在所研究的条件下,用于预测表面温度的湍流换热率相关性不准确。
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来源期刊
Science & Global Security
Science & Global Security INTERNATIONAL RELATIONS-
CiteScore
1.00
自引率
14.30%
发文量
8
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