US PATENT SUBCLASS 244 / 206
.~.~.~.~.~ With rotating member

Current as of: June, 1999
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244 /   HD   AERONAUTICS

34 R  DF  AIRCRAFT SUSTENTATION {2}
35 R  DF  .~ Sustaining airfoils {7}
198  DF  .~.~ With lift modification {3}
201  DF  .~.~.~ Variable {6}
204  DF  .~.~.~.~ By controlling boundary layer {6}
206.~.~.~.~.~ With rotating member

DEFINITION

Classification: 244/206

(under subclass 204) Boundary layer control means comprising a member attached to the airfoil with its axis substantially perpendicular to the direction of motion of the air stream, and mounted for spinning about that axis.