The projectile is positioned in a drop tube and impacted with a drop vehicle to simulate {HEAD ~ the forces} created during {TAIL ~ firing} of the projectile 
The projectile is positioned in a drop tube and impacted with a drop vehicle to simulate { HEAD ~ the forces } created during { TAIL ~ firing } of the projectile
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH