Aircraft wing and winglet arrangement

Details Aircraft wing and winglet arrangement Aircraft wing and winglet arrangement

1986-06-12

1987-12-22

Peters, Jr., Joseph F.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244 91, B64C 2306

Patent

active

047142154

ABSTRACT:
An aircraft wing has a winglet extending from the tip to reduce drag and thereby improve the efficiency of the aircraft. Hitherto such winglets, although they have succeeded in reducing drag, they have also increased the wing bending moment at high coefficients of lift sufficient to require a strengthened and therefore heavier wing. Moreover, they have suffered flow break-away at such high coefficients of lift and have therefore incurred aircraft control problems. A winglet according to the present invention, is of high sweep back and low Aspect Ratio. Its resulting increase in the bending moment on the wing is relatively low even at high lift coefficients and since it changes from conventional attached flow to vortex flow and therefore does not experience random flow break-away at high lift coefficients, it does not harm aircraft control.

REFERENCES:
patent: 2576981 (1951-12-01), Vogt
patent: 4245804 (1981-01-01), Ishimitsu et al.
patent: 4365773 (1982-12-01), Wolkovitch
NACA-TN-2229, pp. 23,25,30.

Affiliated with

Also associated with

Rating

Aircraft wing and winglet arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Aircraft wing and winglet arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aircraft wing and winglet arrangement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-814739