NSWC/WOL TR 76-155 



DTNEG = p~y M (PNEG/10) - TPOS (C15) 



where P qnM i s the inverse of Equation C8, TPOS is the positive 

 duration, and PNEG is calculated by the appropriate equation, C6 or 

 CIO. Thus, the end of the negative phase was taken as the point 

 where the negative pressure calculated by Equation C8 returned to 

 10% of the value, PNEG. 



C-ll/12 



