Dcparrtnet~r of P/IJ..Y~L..Y, U t~i u~r~i t y of Briri.rh Colutnbia. Vat~couoer, Brilisk Columbia Received February 2, 1972Strong shock waves have been generated in a diaphragm shock tube using an imploding detonation driver of conical geometry. In comparing the performance of the conical driver to a Chapman-Jouguet detonation driver we have found that the conical driver provides comparable Mach numbers at considerably smaller ratios of driver to test gas filling pressures. For example Mach 10 was reached at a pressure ratio of 25 in the conical driver while a ratio of 100 is required to produce Mach I0 in a Chapman-Jouguet driver. In theory the Mach number available from a conical driver is expected to increase without bounds as the ratio of driver cone base to test tube diameter. A simplified model for this scaling is discussed and compared with experimental data. In addition an investigation of Mach number and shock attenuation versus cone slant angle is carried out in order to optimize the driver geometry.Des ondes de choc intenses ont tte generees dans un tube de choc a diaphragme en utilisant un detonateur i implosion de geometrie conique. En comparant le fonctionnement de ce detonateur conique avec celui du dispositif de Chapman-Jouguet nous avons trouve que le detonateur conique fournit des nombres de Mach comparables pour des rapports de pressions beaucoup plus faibles. Par exemple on a obtenu Mach 10 avec un rapport de 25 alors qu'un rapport de 100 etait nkcessaire pour produire Mach 10 dans le dispositif de Chapman-Jouguet. En theorie on prevoit que le nombre de Mach accessible avec le detonateur conique augmente sans limite avec le rapport de la base du c8ne au diametre du tube a essai. Un modele simplifie pour etablir cette proposition est discute et compare aux donnees experimentales. De plus on a effectue une investigation du nombre de Mach et de I'attenuation de I'onde de choc en fonction de I'angle d'obliquite du c8ne, dans le but d'optimiser la geometrie du systeme.
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