Rotter Impact Machine

Table 4.3 Figure of Insensitiveness (F of I )for some primary and secondary high explosives calculated from the results of the Rotter Impact Machine (5 kg falling weight on to 30 mg samples)...

Explosive substances can therefore be classified into three main groups using the results of the impact and friction sensitivity tests. These classes are very sensitive , sensitive and comparatively insensitive . By using the results of the tests carried out on the Rotter Impact Machine, explosive materials can be categorized into these three classifications as shown in Figure 4.2. 

Brief mention of impact machines is made under Physical Tests in Vol 1, p XVII. Because there are many literature references to the following impact machines, and not because they are inherently better than any others, we will now describe the following Explosives Research Laboratory (ERL), Rotter, Bureau of Mines (BOM) Picatinny Arsenal (PicnArsn)... 

Fig 3. Rotter Machine Impact Chamber and Anvil-Striker Arrangement (not to scale)... 

R. Pape, 5 The Significance of the Figure of Insensitm-ness obtained from Impact Tests on the Rotter Machine , ERDE Tech Memo No 14/M/54(1954) 4) H.N. Mortlock... 

N 13.59%. Two mildly expl isomers were prepd by nitrating the corresponding diols cis-Cyclohexane - 1,2-diol Dinitrate, prismatic rods (from hot ligroin), mp 24.5 25°, nQ 1.4790 at 21° impact test value with 2 kg wt (Rotter machine) 60 cm vs 100 cm for TNT fumes at 170° Bergmann-Junk test 0.67 mg NO evolved/ lg sample in 20 hrs at 106°... 

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