Brief Description: Mark the Centerlines of the Horizontal
Step 27: Mark the Centerlines of the Horizontal Stabilizer Strakes on the Fuselage The horizontal stabilizer strakes—which enhance the slow-speed handling and stallrecovery characteristics of the Sportsman by preventing the stabilizer from stalling at high angles of attack—extend forward from the horizontal stabilizer along the fuselage sides. In order to work properly, the centerline of each strake must be aligned with the chord line of the stabilizer. In this step, you will mark an extension of this chord line onto the sides of the fuselage. Begin by marking the leading edge point on the fuselage. Draw a 24” line parallel to waterline from that point. Measure down 9/16” from this point on the waterline and then draw a line back to the leading edge of the horizontal stabilizer. This line represents the centerline of the stabilizer at a 1.4 degree down incidence angle. This is just using simple trigonometry to draw a line at an angle. There are several other ways to do this as well.
