Tweak the KC-135 Stratotanker's Windshield Wipers. Save Millions.
Aerodynamics is everything.
By Kyle Mizokami
Apr 23, 2020
The KC-135 Stratotanker has been in service since 1954.
Using computation fluid dynamics, the Air Force discovered it can improve the plane’s aerodynamic efficiency by one percent simply by changing the direction of the windshield wipers.
The improvement could save the service $7 million a year in fuel costs.
The Air Force has discovered a simple engineering change to the venerable KC-135 Stratotanker could save it up to $7 million a year. Using computer modeling, the Air Force realized it could increase the aerodynamic efficiency of the converted jetliner by one percent by changing the orientation of the windshield wipers. The increased efficiency translates into greater fuel savings.
https://www.popularmechanics.com/military/aviation/a32240193/kc-135-windshield-wipers/