Intermediate lift system for jet aircraft and method

Claim 1

AN INTERMEDIATE LIFT SYSTEM FOR AIR CRAFT HAVING PORT AND STARBOARD WING ELEMEMTS AND ADAPTED AT LESS THAN CRUISING SPEEDS TO DEVELOP A LARGE LIFT COMPONENT WITH SAID ELEMEMT AND COMPRISING: A RIGID PORTION SEPARATED FROM A TRAILING EDGE FLAP BY A SPANWISE GAP AND DEFINING AN INCOMPLETE AIRFOIL SECTION FOR EACH OF SAID WING ELEMENTS; UPPER AND LOWER DOOR ELEMENTS CLOSEABLE OVER SAID GAP TO COMPLETE SAID AIRFOIL SECTION AND WHEN OPENED DEFINING WITH SAID FLAP, UPON DEFLECTION OF THE LATTER, A SPANWISE SHROUD AND DIFFUSER FOR THE PASSAGE OF WING SURFACE AIR INTO SAID GAP AND TOWARD AND BEYOND THE LOWER SURFACE OF SAID SECTION; AND MEANS FOR GENERATING A SPANWISE JET STREAM INTERMEDIATE SAID GAP AND ENTIRELY WITHIN SAID WING SECTION THUS TO INDUCT AIR FROM SAID WING SURFACES INTO SAID SHROUD FOR THRUST DIFFUSION CREATING A DOWNWARD THRUST COMPONENT FROM SAID DIFFUSER AND BY THE INDUCTION OF AIR OVER SAID SURFACES INCREASING THE AIR FLOW THEREOVER TO CREATE A NOSE-UP MOMENT SUBSTANTIALLY BALANCING THE MOMENT OF SAID DOWNWARD THRUST ON SAID WING ELEMENTS.