TABLE 3. 



Values of q ^-'^I^q for Limiting case of 

 very short pvlses 7 — x 



219 



For application to thd pressure pulse from an underwater explosion tne calculations are 

 subject 0' course to the limitations discussed in tne main paper. In particular the entry for 

 qX = 5, q = 5 in Table 2 corresponds to a contact explosion and is jivsn only for interpolation 

 purposes. * similar ramarn applies to tne entry for X = 1 in Table 3. 



Floating hemi sphere subject to a pressure pulse from ver tically be low. 



It may be noted that the analysis. for the sphere can be applied also to the case of a 

 nemisphere floating with diametral plane in the surface of the water and subjected to a pulse 

 arrivin;) vertically from bulow, i.r. the pulse centre is vertically below the sphere centre. 

 In effect we nave only to reflect this problem in the surface of the water and change the sijn 

 of tnv imaje pulse to see that it is equivalent to the problem of a buoyant sphere in an infinite 

 liquid subjected to equal positive and negative pulses with centres diametrically opposite at 

 equal distance from the sphere. Since the positive and negative pulses jive tqual contributions 

 to the bodily motion of tne sphere and reinforce one another the motion is similar to that due 

 to tne 3in;jle positive pulse but of double magnituoe. 



Thus the results of Tables 2 and 3 can be immediately applied to the hemisphere problem 

 by simply doubling the entries for V/v . 



