A trailing surface aft of {TAIL ~ the maximum radius} has {HEAD ~ a radius} at all points therealong less than the maximum radius 
A trailing surface aft of { TAIL ~ the maximum radius } has { HEAD ~ a radius } at all points therealong less than the maximum radius
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH