an end plate is the minimum required to counter the formation of wing tip span wise pressure gradients divider plate 34 separates the upper and lower compartments of the tip section their wing tip end is sealed by fence 32 and inboard end rib plate 36 compressed air 38 is supplied to ejector 40 to provide vacuum for trailing edge suction slot 42 and for wing bottom suction slot 44 adjacent to end plate 32 an elbow at its outlet allows it to discharge through end plate 32 in the aft direction for thrust recovery compressed air 46 is supplied to ejector 48 to provide vacuum for a wing upper surface suction slot 50 adjacent to end plate 32 an elbow at its outlet allows it to discharge through end plate 32 in the aft direction for thrust recovery suction slots are best machined in removable bolt on covers to faciltate cleaning fig3 is a schematic drawing of the rear segment of the compartmentalized tip of a 3 d wing 52 or rotor blade with a coanda wall jet 54 blowing over a rounded end plate 56 the wing or rotor blade tip has an upper compartment 58 and lower compartment 60 separated by plate 62 ejector 64 provides a vacuum in upper compartment 58.