{HEAD ~ A projectile ground shock simulator} for simulating {TAIL ~ the force pulse} on a pectile in testing for shock effect on the guidance system of the projectile 
for simulating
{ HEAD ~ A projectile ground shock simulator } for simulating { TAIL ~ the force pulse } on a pectile in testing for shock effect on the guidance system of the projectile
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH