By U.S. Army Research and Development Command.; TACOM, ARDEC.; Warheads, Energetics and Combat Support Center
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Example text
Three such tests sre made aad the results averaged. Expansions far equivalent wrs of expls are calcd, and the test value is expressed in % of the expansion of an equivalent wt of TNT The Trauzl test in France is somewhat different in procedure although dimensions of the lead block are the same(See Coefficient d‘ utilisation” practique, in this section) Initiating efficiency(strength) of primary expla can be approx detd by firing a smell chge(such as LO 8) in the cavity of a small lead block, such as 100 mm in height snd 100 mm in diam.
According to Davis( 1943),338-9, the strength(explosiue force) of a straight nitroglycerin dynamite is expressed by the percent of NG which it contains. Thus "40% straight NG dynamite" whatevr their compn may be, contains 40% NG but "40% ammonia dynamite," " 40% gelatin dynamite," etc, are supposed to have the same strength or explosive force as 40% straight dynamite. ‘Strength of dynamites can be detd by Trauzl Test(qv) Strength of Explosives, Test. 5° ond 80° Surveillance Tests are standard US stability tests for propellants.
Methods for measuring vapor pressure may be divided into static and dynamic. Their de l)J. Reilly & W. Strong, ‘ Procedures in Experimental Physics, ” Prentice Hall,NY "physical Methods of organic chemistry, ” Interscience,NY, (1945 ),chap 3 ) A. Perry, Edit, "chemical Engineers’ Handbook, ” McGraw-Hill,NY( 1950),98 & 149-73 Velocity of Detonation Tests. See Detonation Rate Tests Vitesse de detonation. Fr for Detonation Rate Vivacite, Determination de 10. Fr for Quicknees of Burning of Propellants, Determination Volatility of Explosives ond Related Substances may be expressed by the loss of wt per unit of its exposed surface at a given temp and in unit time.