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XI. The Pressure of Explosions. Experiments on Solid and Gaseous 

 Explosives. Parts I. and II. 



By J. E. PETAVEL. 

 Communicated by Professor ARTHUR SCHUSTER, F.R.S. 



Received August 18, Read November 16, 1905. 

 [PLATE 21.] 



CONTENTS. 



Page 



Introduction . . .358 



PART I. 

 METHODS AND APPARATUS. 



Explosive pressure gauges 359 



Maximum pressure gauge . . . 359 



Recording manometer 361 



Chronograph 364 



Explosion chambers 365 



Spherical explosion chamber 366 



Cylindrical enclosure 368 



Firing plug ; . . . . . 368 



Standard gauges 368 



Valves and connections . 369 



PART II. 

 EXPERIMENTAL INVESTIGATION OF THE EXPLOSIVE PROPERTIES OF CORDITE. 



General shape of the curves 373 



Effect of the diameter of cordite 374 



Effect of the enclosure 379 



Relation of pressure to gravimetric density 384 



Distribution of the explosive 386 



APPENDIX : Tables of numerical results 390-398 



VOL. CCV. A 397. 30.12.05 



