Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1994-10-17
1997-10-28
Mojica, Virna Lissi
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244 48, 244134A, 244206, B64C 344, B64C 352, B64D 1510
Patent
active
056810148
ABSTRACT:
A control system for aircraft airfoils, which is an improvement over existing aileron, flap, spoiler and deicing technologies, in providing increased roll control and aerodynamic lifting and braking functions; with greatly reduced drag increased airspeed and precise control performance at all airspeeds, due to clean uninterrupted airfoil surfaces and directional conformance of wing to the intended flight path.
This is accomplished by use of a torque tube mounted internally in the aeroelastic airfoil structure, and firmly attached to the airfoil tip structure. In operation the inboard end of the torque tube when rotated differentially on its pivot axis, imposes a helicoidal twist on the aeroelastic airfoil structure, with maximum angle of incidence at the outboard wing tip, providing near perfect lateral roll control or cooperating to provide increased lift and braking or maneuverability, also the foregoing operations provide automatic deicing. The torque tube can be operated by conventional control systems, e.g. cable/pulley, electric/hydraulic servo etc.
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