{HEAD ~ A weakened zone} of {TAIL ~ said tube section} is automatically broken during lift off by a mechanism applying a tensile stress to the section 
of
{ HEAD ~ A weakened zone } of { TAIL ~ said tube section } is automatically broken during lift off by a mechanism applying a tensile stress to the section
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH