Aircraft with thrust and lift augmenting airfoil

An aircraft having a short field takeoff and landing capability comprising:

• a fuselage;
• a main wing attached to said fuselage;
• a jet engine emitting substantially its entire exhaust stream at a location to flow rearwardly from above the trailing edge of said wing;
• an auxiliary thrust augmenting airfoil which is lower than and offset rearwardly with respect to said wing;
• and
• means mounting said thrust augmenting airfoil for adjusting movement relative to the fuselage and wing between a cruise position in which said airfoil is generally parallel to, but lower than, and spaced a substantial distance from the wing, and a takeoff position in which the airfoil is inclined at a downward and rearward angle of attack in a manner inducing downward and rearward movement of said exhaust stream by the Coanda Effect, with said airfoil in said takeoff position having its leading edge spaced rearwardly and downwardly from the trailing edge of the wing to define with said trailing edge a gap across which said exhaust stream flows in a relation drawing air through the gap from under the wing to attain thrust augmentation.