The  way  to  avoid  turbulence  of  an  air  stream  flowing  around  bearing  (carrying)  planes  (and,  as  a  whole,  structure  units)  of low-speed  aircraft.

Shulga V.I.

http//shulga.tripod.com/mixt_2/airlam/E.htm

"To intertwine" elastic threads made of plastic materials, fiber glasses or composites into a potentially turbulent stream. To glue "hairy" fabric on the "leeward" wing sides.