The spring thus duplicates the force pulse acting on {HEAD ~ a fired projectile} and also allows for {TAIL ~ the drop vehicle} to be reused 
The spring thus duplicates the force pulse acting on { HEAD ~ a fired projectile } and also allows for { TAIL ~ the drop vehicle } to be reused
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH