The separating mechanism does not take up {TAIL ~ any extra space} in the missile or booster body, but fits into unused volume surrounding {HEAD ~ the booster nozzle} 
The separating mechanism does not take up { TAIL ~ any extra space } in the missile or booster body , but fits into unused volume surrounding { HEAD ~ the booster nozzle }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD