58 60 at an angle of preferably approximately 22 5 u00b0 with the airfoil centerline promotes laminar rather than turbulent flow over the airfoil thus also promoting increased lift the width of slot 62 also tapers in configuration e g from 0 360 34 wide at the fuselage end of the wing to 0 216 34 wide at the wing tips depending upon wing chord slot 64 is at least equal in width to slot 62 the forward thrust created by air pressure against the forward wall of the blowing duct is offset by the rearward thrust created by air pressure against the rearward wall of the suction duct the transverse thrust of fan 48 is offset by the transverse thrust of fan 50 which is in the opposite direction an additional advantage of the in line blowing system in which suction air from the right wing is blown over the left wing and vice versa is that in the event of failure of one fan the system will not become completely unbalanced there still will be blowing air over one wing and suction on the opposite wing in operation vertical or short takeoff capability is provided by the induced lift created by the blowing system.