By expanding the page border, the wings attached to the fuselage side filed extended forward (LERX) and combustion engines end make L-15 effective to fly like the leading fighter.
With the extension of the front edge of the wing adjacent to the lateral extension extending forward (LERX) and the combustion engine, making it more efficient to fly L-15 fighter as premier.
With the expanding of the front wings attached to the sides extend forward hand (LERX) and combustion engine room at the end. L-15 effective fighter flight like a top