Explosion , Impetus and Available Energy

Detonation (and Explosion), Impetus and Available Energy. Impetus, in the physical sense, may be defined as the force with which a moving body tends to maintain 

Dunkle (Ref 1, p 257) in discussing the subject entitled Impetus and Available Energy gives the following equation for the heat of explosion at const volume  

In the latter units impetus is numerically equal to the volume that unit weight of the explosion products, if ideal gases, would occupy on isothermal expansion at (Tv) to a pressure of 1 atm. The work done in this expansion would depend on the conditions. Work done would equal impetus only if the expansion were against an external pressure of 1 atm thruout Refs 1) Dunkle s Syllabus (1957-1958), p 257 2) Dunkle,private communication, 

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Similar studies have been carried out by Cook who came to the conclusion that ballistic mortar is not a reliable method for determining field strength of HE s. Nevertheless, the maximum available work (A) in the mortar can be predicted quite accurately by the use of equation 11.8 given on p 268-L of Ref 17 and equation 11,12 given on p 273-R of Ref 17 [See also Detonation (and Explosion), Impetus and Available Energy in ]... 

IEC 47, 1794(1955) (Detailed discussion on Trauzl block method) 15) J.F. Roth, Explosivst 1957, 161-76. PicArsn Translation No 30, by Dr G.R. Loehr (1959) (Ballistic methods for measuring expl power and deton shock) 16) Dunkle s Syllabus (1957-1958), p 257 (Discussion on expression nRTy misnamed "power or "explosive force , whereas a better name is "impetus ) [See "Detonation (and Explosion), Impetus and Available Energy in]... 

Force or Impetus. See Vol 4, p D391-R under Detonation (and Explosion) impetus and Available Energy... 

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