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EXPLOSION

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Originally appearing in Volume V03, Page 278 of the 1911 Encyclopedia Britannica.
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EXPLOSION VESSEL :; ///%t ti a state of gas; or between p and v, the reciprocal of D, which may be called the gravimetric volume (G. V.), being the ratio of the volume of the gas to the volume of an equal weight of water. The results are also embodied in the following Table:- G.D. G.V. Pressure in Tons per sq. in. Pebble Powder. Cordite. 0.05 20.00 0.855 3.00 6 16.66 1.00 3.8o 8 12.50 1.36 5.40 O•IO IO.00 I16 7.I0 12 8.33 2.06 8.7o 14 7'14 2.53 10.50 15 6.66 2.73 11.36 16 6.25 2.96 12.30 18 5.55 3'33 14.20 20 5.0o ' 3.77 16•oo 22 4'54 4'26 17.90 24 4.17 4.66 19.80 25 4.00 4.88 20.63 26 3.84 5'IO 21.75 30 3'33 6•o7 26.00 35 2'85 7.35 31.00 40 2.50 8'73 36.53 45 2.22 10.23 42.20 50 2.00 11.25 48.66 55 1.81 13.62 55.86 6o I.66 15'55 63.33 The term gravimetric density (G.D.) is peculiar to artillerists; it is required to distinguish between the specific gravity (S. G.) of the powder filling a given volume in a state of gas, and the specific gravity of the separate solid grain or cord of powder. Thus, for instance, a lump of solid lead of given S. G., when formed into a charge of lead shot composed of equal spherules closely packed, will have a G.D. such that (4) G.D. of charge of lead shot =l6~~2=0 7403. S.G. of lump of solid lead while in the case of a bundle of cylindrical sticks of cordite, (5) G.D. of charge of cordite _ 1~ 3 = 0.9067. S.G. of stick of cordite 6-At the standard temperature of 62° F. the volume of the gallon of to lb of water is 277.3 cub. in.; or otherwise, i cub. ft. or 1728 cub.
End of Article: EXPLOSION
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