Patent ID: 9688386
Date: 2017-06-27
CPC Classifications: B64C

Claim:
1. A method to enable high-lift over a fluid-dynamic body using a variable camber Krueger flap deployment linkage mechanism, the method comprising: deploying a variable camber Krueger flap through a sequence of flap positions including: positioning the variable camber Krueger flap below and aft of a wing leading edge; and positioning the variable camber Krueger flap in a fully deployed position in which at least a portion of the variable camber Krueger flap is above and fore of the wing leading edge; wherein the variable camber Krueger flap has a bullnose member and a trailing end member, wherein the variable camber Krueger flap deployment linkage mechanism comprises a flap linkage assembly coupling a first linkage assembly and a second linkage assembly to the Krueger flap, the flap linkage assembly comprising a flap link coupled to the bullnose member and the trailing end member, wherein the first linkage assembly is coupled to the flap linkage assembly and an airfoil, the first linkage assembly comprising: wherein the second linkage assembly is coupled to the flap assembly and the first drive arm, the second linkage assembly comprising a drive transfer arm coupled to the flap assembly, wherein the flap link, the first drive link, the first drive arm, and the drive transfer arm form a four bar linkage, and wherein the middle link portion is located between a first end of the first drive link and a second end of the first drive link.