초록 ▼

A secondary wing system for use on an aircraft augments the lift, stability, and control of the aircraft at subsonic speeds. The secondary wing system includes a mechanism that allows the canard to be retracted within the contour of the aircraft fuselage from an operational position to a stowed posi

A secondary wing system for use on an aircraft augments the lift, stability, and control of the aircraft at subsonic speeds. The secondary wing system includes a mechanism that allows the canard to be retracted within the contour of the aircraft fuselage from an operational position to a stowed position. The top surface of the canard is exposed to air flow in the stowed position, and is contoured to integrate aerodynamically and smoothly within the contour of the fuselage when the canard is retracted for high speed flight. The bottom portion of the canard is substantially flat for rotation into a storage recess within the fuselage. The single canard rotates about a vertical axis at its spanwise midpoint. The canard can be positioned between a range of sweep angles during flight and a stowed position in which its span is substantially parallel to the aircraft fuselage. The canard can be deployed and retracted during flight. The deployment mechanism includes a circular mounting ring and drive mechanism that connects the canard with the fuselage and permits it to rotate and to change incidence. The deployment mechanism further includes retractable fairings which serve to streamline the wing when it is retracted into the top of the fuselage.

대표청구항 ▼

[ What is claimed is:] [1.] A secondary wing system for use on an aircraft forward fuselage, comprising in combination:a one-piece canard in an elliptical planform shape derived from a waterline cut through the upper portion an area-ruled supersonic fuselage, intermediately positioned between a nose

[ What is claimed is:] [1.] A secondary wing system for use on an aircraft forward fuselage, comprising in combination:a one-piece canard in an elliptical planform shape derived from a waterline cut through the upper portion an area-ruled supersonic fuselage, intermediately positioned between a nose and a main wing; andsaid canard being secured movably relative to the forward fuselage between a stowed position and a deployed position, so that when said canard is deployed, it provides supplementary lift to the aircraft at predetermined speeds, and when said canard is not in use, it is stowed conformably within a contour of said upper portion of the forward fuselage.