Shock waves in aviation security and safety |
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Authors: | GS Settles BT Keane BW Anderson JA Gatto |
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Institution: | (1) Gas Dynamics Laboratory, Mechanical and Nuclear Engineering Department, 301D Reber Bldg., Penn State University, University Park, PA 16802, USA , US;(2) W.J. Hughes Technical Center, Federal Aviation Administration, Atlantic City, NJ 08405, USA , US |
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Abstract: | Accident investigations such as of Pan Am 103 and TWA 800 reveal the key role of shock-wave propagation in destroying the
aircraft when an on-board explosion occurs. This paper surveys shock wave propagation inside an aircraft fuselage, caused
either by a terrorist device or by accident, and provides some new experimental results. While aircraft-hardening research
has been under way for more than a decade, no such experiments to date have used the crucial tool of high-speed optical imaging
to visualize shock motion. Here, Penn State's Full-Scale Schlieren flow visualization facility yields the first shock-motion
images in aviation security scenarios: 1) Explosions beneath full-size aircraft seats occupied by mannequins, 2) Explosions
inside partially-filled luggage containers, and 3) Luggage-container explosions resulting in hull-holing. Both single-frame
images and drum-camera movies are obtained. The implications of these results are discussed, though the overall topic must
still be considered in its infancy.
Received 22 July 2001 / Accepted 19 July 2002 Published online 4 November 2002
Correspondence to: G.S. Settles (e-mail: gss2@psu.edu)
An abridged version of this paper was presented at the 23rd International Symposium on Shock Waves at Fort Worth, Texas, from
July 22 to 27, 2001. |
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Keywords: | : Shock waves Aviation security Terrorism Schlieren High-speed cinematography Explosions |
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