US PATENT SUBCLASS 244 / 210
.~.~.~.~.~ With nose slot

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}
210.~.~.~.~.~ With nose slot {1}
211  DF  .~.~.~.~.~.~> Having trailing edge flap

DEFINITION

Classification: 244/210

(under subclass 204) Boundary layer control means comprising either an opening through the airfoil adjacent its leading edge, or an auxiliary element adjacent the leading edge for forming a slot therebetween, thus providing for deflection of the flow of the air at the leading edge.