Experimental technique for generating fast high-density shock waves with phased linear explosive shock tubes

Loiseau, Jason; Szirti, Daniel; Higgins, Andrew; Tanguay, Vincent

doi:10.1007/s00193-011-0333-z

Cited by 7 publications

(2 citation statements)

References 1 publication

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“…The shock initially moved at 19.2 km/s but quickly decayed toward the detonation trajectory before accelerating again to slightly beyond the pinch velocity. Similar oscillations were observed in a larger scale experiment (3.18 cm OD gas tube) for a fill pressure of 6.9 MPa and a phase velocity of 12 km/s [6].…”

Section: Resultssupporting

confidence: 82%

Phase velocity enhancement of linear explosive shock tubes

Loiseau¹,

Huneault²,

Serge³

et al. 2012

AIP Conference Proceedings

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Section: Resultssupporting

confidence: 82%

Phase velocity enhancement of linear explosive shock tubes

Loiseau¹,

Huneault²,

Serge³

et al. 2012

AIP Conference Proceedings

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“…Further details on the launcher and projectile design can be found in the paper by Loiseau [8]. Two shock pins were inserted at the end of the driver to monitor the velocity of the precursor shock wave and its distance from the explosive virtual piston, in order to ensure the driver operated as expected [9][10]. Figure 2 shows a schematic of the experiment, including the PDV probe arrangement, the shock pins, and details of the launcher design characteristics.…”

Section: Methodsmentioning

confidence: 99%

Down-Bore Velocimetry of an Explosively Driven Light-Gas Gun

Huneault¹,

Loiseau²,

Hildebrand³

et al. 2015

Procedia Engineering

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Hypervelocity launchers are used in a number science and engineering applications. The ability of the two-stage light-gas gun to launch relatively large and well characterized projectiles to hypervelocity has made it the launcher of choice for a wide range of hypervelocity impact research fields. However, practical concerns typically limit launcher operation to 8 km/s. This work will present the development of an explosively driven light-gas gun in which the linear implosion of a thin walled steel tube is used to dynamically compress helium gas, which subsequently expands to propel a projectile. Despite modest development efforts, the implosion-driven launcher has demonstrated the ability to launch a 0.36-g projectile to 10.4 km/s. This study will focus on a down-bore velocimetry experiment of an implosion-driven launcher using a photonic Doppler velocimetry system which was able to track the projectile velocity up to 7.8 km/s. The observed projectile acceleration is significantly higher than internal ballistic model predictions. It is proposed that mixing of ablated wall material with the light gas in the launcher driver is responsible for the anomalously high projectile acceleration.

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