{HEAD ~ The primary inner shell} 30′ is formed with a coaxial sleeve extension 151 connected to {TAIL ~ its sidewall} at the shells secondary end 34 
{ HEAD ~ The primary inner shell } 30′ is formed with a coaxial sleeve extension 151 connected to { TAIL ~ its sidewall } at the shells secondary end 34
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH