KC-135 StratotankerKC-135A in flight - winglet study.A chase plane view of the tufts on the KC-135 winglet. The use of tufts in flight research dates back...During the 1970s, the focus at Dryden shifted from high-speed and high-altitude flight to incremental improvements in technology and aircraft...The Boeing KC-135 Stratotanker, besides being used extensively in its primary role as an inflight aircraft refueler, has assisted in...The KC-135 with the winglets in flight over the San Gabriel mountains, south of Edwards AFB. While wind tunnel tests...