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Forebody shock control devices for drag and aero-heating reduction: A comprehensive survey with a practical perspective

机译：前车身减震装置，用于减阻和减少空气加热：具有实用视角的全面调查

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摘要

One key feature that distinguishes the flowfield around vehicles flying in supersonic and hypersonic regimes is the bow shock wave ahead of forebody. The severe drag and aeroheating impacting these vehicles can be significantly reduced if the bow shock wave ahead of the vehicles forebodies is controlled to yield weaker system of oblique shocks. Benefits of forebody shock control include increasing flight ranges, economizing fuel consumption, reducing dead weights, and thermally protecting forebody structure and onboard equipment. Forebody shock control that has been widely studied since the early 1900s is achievable in numerous techniques that vary according to the mechanism of control. While some of these techniques have already been implemented in real systems, other techniques involve serious complications and tough trade-offs. The present paper is intended to serve as the first comprehensive survey on the field of forebody shock control devices. The objectives of the present paper are multifold. The paper categorizes the various forebody shock control devices in a physics-based manner, explains the underlying physics for each device, and surveys the key studies and state-of-the-art knowledge. The paper also addresses the existing gaps in knowledge, highlights the existing systems implementing these devices, and discusses the associated practical implementation issues and design-tradeoffs.
机译：区分以超音速和高音速飞行的飞行器周围流场的一个关键特征是前体前部的弓形冲击波。如果控制车辆前身前的弓形冲击波以产生较弱的倾斜冲击系统，则可以显着降低影响这些车辆的严重阻力和空气加热。前躯冲击控制的好处包括增加飞行距离，节省燃油消耗，减轻自重以及对前躯结构和机载设备进行热保护。自1900年代初以来，已广泛研究了前躯体冲击控制，这可通过根据控制机制而变化的多种技术来实现。尽管其中一些技术已在实际系统中实现，但其他技术涉及严重的复杂性和艰难的权衡。本文旨在作为前体防震装置领域的首次全面调查。本文的目的是多重的。本文以基于物理学的方式对各种前体冲击控制设备进行了分类，解释了每种设备的基本物理原理，并调查了关键研究和最新知识。本文还解决了现有的知识空白，重点介绍了实现这些设备的现有系统，并讨论了相关的实际实现问题和设计折衷。

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  • 来源
    《Progress in Aerospace Sciences》 |2020年第1期|100585.1-100585.30|共30页
  • 作者

    Ahmed Mahmoud Y. M.; Qin Ning;

  • 作者单位

    Mil Tech Coll Aerosp Engn Dept Cairo Egypt;

    Univ Sheffield Dept Mech Engn Sheffield S1 3JD S Yorkshire England;

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