Development of a High-pressure Detonation-driven Shock Tube Facility PDF Download
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Author: Donald R. Wilson
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Category :
Languages : en
Pages :
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Author: Donald R. Wilson
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Category :
Languages : en
Pages :
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Author: W. Scott Stuessy
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Category :
Languages : en
Pages :
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Book Description
Author: Frank K. Lu
Publisher: AIAA
ISBN: 9781600864483
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 694
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Author: Jonathan Armstrong
Publisher:
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Category :
Languages : en
Pages :
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Author: W. R. WARREN
Publisher:
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Category :
Languages : en
Pages : 1
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Progress in the development and evaluation of an electrically heate helium shock driven acility is described. The work covered is concerned primarily with a small prototype shock tube. while this tube does not completely meet the requirements one would establish for an ultimate test facility, results from its study do indicate that the attractive features of high performance shock tubes discussed earlier can be achieved. One interesting result of this work is that the prototype facility itself has been found to be useful in the study of hypervelocity stagnation region convective heat transfer problems. (Author).
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Category :
Languages : en
Pages : 5
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The simple, cylindrically imploding and axially driven fast shock tube (FST) has been a basic component in the high velocity penetrator (HVP) program. It is a powerful device capable of delivering a directed and very high pressure output that has been successfully employed to drive hypervelocity projectiles. The FST is configured from a hollow, high-explosive (HE) cylinder, a low-density Styrofoam core, and a one-point initiator at one end. A Mach stem is formed in the core as the forward-propagating, HE detonation wave intersects the reflected radial wave. This simple FST has been found to be a powerful pressure multiplier. Up to 1-Mbar output pressure can be obtained from this device. Further increase in the output pressure can be achieved by increasing the HE detonation velocity. The FST has been fine tuned to drive a thin plate to very high velocity under an impulse per unit area of about 1 Mbar[mu]s/cm[sup 2]. A 1.5-mm-thick stainless steel disk has been accelerated intact to 0.8 cm/[mu]s under a loading pressure rate of several Mbar/[mu]s. By making the plate curvature slightly convex at the loading side the authors have successfully accelerated it to almost 1.0 cm/[mu]s. The incorporation of a barrel at the end of the FST has been found to be important as confinement of the propellant gas by the barrel tends to accelerate the projectile to higher velocity. The desire to accelerate the plate above 1.0 cm/[mu]s provided the impetus to develop a more advanced fast shock tube to deliver a much higher output pressure. This report describes the investigation of a relatively simple air-lens phase-detonation system (PFST) with fifty percent higher phase-detonation velocity and a modest 2 Mbar output. Code calculations have shown that this PFST acceleration of a plate to about 1.2 cm/[mu]s can be achieved. The performance of these PFSTs has been evaluated and the details are discussed.
Author:
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Category : Aeronautics
Languages : en
Pages : 730
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Author: Santiago Idárraga Saa
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Category :
Languages : en
Pages :
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Understanding the behaviour of materials when a blast load is applied can allow the development of better and more resistant materials whose applications can be extended from military use to civil use. There are several methods and devices that can be used to analyse this behaviour, one of those and the core of this project is the shock tube system. This device has the capability to generate blast waves by injecting gas to a chamber which has a membrane at the end, that at the required pressure will burst creating the wanting shock wave that travels thru another chamber. Therefore this process has the advantage be relatively cheap as it only requires gas. The objective of this project is the development of the high pressure section involving the selection of the correct materials to endure the working pressure that the university facilities can achieve, the subsequent construction of the chamber and the study...
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Category :
Languages : en
Pages : 393
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NOL model nuclear airblast simulator The soil filled shock tube A shock tube modified to produce sharp-rising overpressures of 400 milliseconds duration A high explosive operated shock tube with facilities for testing structures Volume detonation in shock tubes High pressure loading device for evaluating blast closure performance Techniques for producing long- duration loads in the NCEL blast simulator Arc heating technique for shock tube driver Pressure and heat-transfer instrumentation used in the NOL hypersonic shock tunnels Measurements in the hypersonic shock tunnel at I.S.L. Shock wave decay in tunnels Republic 24-in hypervelocity wind tunnel.
Author: Zonglin Jiang
Publisher: Springer Nature
ISBN: 9811970025
Category : Science
Languages : en
Pages : 281
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Book Description
This book highlights the theories and research progress in gaseous detonation research, and proposes a universal framework theory that overcomes the current research limitations. Gaseous detonation is an extremely fast type of combustion that propagates at supersonic speed in premixed combustible gas. Being self-sustaining and self-organizing with the unique nature of pressure gaining, gaseous detonation and its gas dynamics has been an interdisciplinary frontier for decades. The research of detonation enjoyed its early success from the development of the CJ theory and ZND modeling, but phenomenon is far from being understood quantitatively, and the development of theories to predict the three-dimensional cellular structure remains a formidable task, being essentially a problem in high-speed compressible reacting flow. This theory proposed by the authors’ research group breaks down the limitation of the one-dimensional steady flow hypothesis of the early theories, successfully correlating the propagation and initiation processes of gaseous detonation, and realizing the unified expression of the three-dimensional structure of cell detonation. The book and the proposed open framework is of high value for researchers in conventional applications such as coal mine explosions and chemical plant accidents, and state-of-the-art research fields such as supernova explosion, new aerospace propulsion engines, and detonation-driven hypersonic testing facilities. It is also a driving force for future research of detonation.
