Variable camber leading edge mechanism with Krueger flap

Details Variable camber leading edge mechanism with Krueger flap Variable camber leading edge mechanism with Krueger flap

1981-09-29

1984-01-24

Blix, Trygve M .

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244219, B64C 350

Patent

active

044271689

ABSTRACT:
An actuating mechanism for variable camber leading edges of aerodynamic airfoils characterized by its rigidity and structural stability and which permits varying the camber of a flexible continuous airfoil skin through leading edge deflection angles ranging from on the order of 14.degree. to on the order of 22.degree. with reference to the wing box chord line without deployment of a Krueger flap and up to on the order of 32.degree. with deployment of a Krueger flap; and, which permits varying the camber of a flexible continuous airfoil skin while maintaining a uniform, essentially constant curvature throughout the chordal extend of deflection for any given degree of deflection; yet, wherein: (a) the upper continuous flexible airfoil skin (i) is not required to provide load bearing support, (ii) is not subjected to chord-wise stress from movement of the actuating linkage, and (iii) is not subjected to localized stress resulting from non-uniform deflection; (b) the actuating linkage is contained entirely within the airfoil aerodynamic contour or airfoil envelope at all operating positions; (c) the actuating linkage may be readily employed with a wide range of conventional structural wing box configurations; and (d), which permits of deployment of either " slotted" Krueger flaps to meet operating requirements during take-off and landing operations or to function as an inflight speedbrake under both high speed and low speed flight conditions. More specifically, the variable camber leading edge actuating mechanism comprises a simple 4-bar linkage arrangement which readily permits of incorporation of Krueger flaps actuated by a suitable torque tube extending span-wise through the deflectable leading edge of the airfoil.

REFERENCES:
patent: 3743219 (1973-07-01), Gorges
patent: 3994451 (1976-11-01), Cole

Affiliated with

Also associated with

Rating

Variable camber leading edge mechanism with Krueger flap does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable camber leading edge mechanism with Krueger flap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable camber leading edge mechanism with Krueger flap will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1283345