articulation means for attaching the flap to a remainder of the shroud so that {HEAD ~ the flap} is articulated at {TAIL ~ the end} 
is articulated at
articulation means for attaching the flap to a remainder of the shroud so that { HEAD ~ the flap } is articulated at { TAIL ~ the end }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL