Exemplary embodiment may provide {HEAD ~ a fan efficiency benefit} of {TAIL ~ at least 1.0%} relative to the combined spacing and cropping necessary to meet noise requirements for a ‘fixed’ CROF system 
of
Exemplary embodiment may provide { HEAD ~ a fan efficiency benefit } of { TAIL ~ at least 1.0 % } relative to the combined spacing and cropping necessary to meet noise requirements for a ‘ fixed ’ CROF system
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH