| 摘要 |
An apparatus and method for increasing the angle of attack operating range of an aircraft is disclosed. The invention comprises a pair of substantially vertical tip fins. Each vertical tip fin has a main portion and an aft portion. The main portion is securely connected to the tip of the airplane wing and has a swept back leading edge. The aft portion comprises a substantially vertical aileron hingedly connected to the main portion of the tip fin for controlling the roll of the aircraft at high angles of attack. A hinge line is formed at the hinged connection which is swept back. The sweeping back of the leading edge and the hinge line is such that at high angles of attack the oncoming airflow becomes nearly perpendicular to the leading edge and the hinge line, thereby increasing the perforamnce of the vertical tip fin when deflected. |
