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Date:  11-11-2014
Number of Hours:  1.50
Manual Reference:  
Brief Description:  Main Landing Gear - Strut fairings

Cleaned the shed.

Mounted the fuselage inverted on sawhorses modified to fit the longerons. Leveled with beveled plastic blocks I found at Bunnings Aerospace and bondo'd

Propped the MLG strut in the approximate final position.

Am following the lead of Wayne Hicks, in adding fairings to the MLG strut, with the aim of making the chord of the strut 4 times the camber at any point, and approximately zero incidence in the cruise. The plans have you mount the strut with a positive incidence, and a shorter chord, causing drag.

Also, I'm intending to use braided ss brake lines, which won't fit throught the plans soda straws, so I will have to hide a 12mm conduit under the second torsional layup.

I decided not to go for a perfect airfoil shape, just marked the thickest part of the strut, and calculated how far back from the widest point a NACA 0030 airfoil would extend if its chord length was 4 times the camber. This gave the answer that I needed to extend the TE of the strut 1.5" at 8" from the end, where the fairings start, to 1.8" at the widest point. To make it look nice the fairing will go from 1.5" at the tip to 2" at the root.

I didn't go for the perfect incidence either, just copied Wayne's work by following the line of the lower surface, and planning to fair in the shape of the upper with micro. Wayne used urethane blocks, 90% of which he sanded off, showing the mounting micro. Planning to build the fairings on something stiff glued to the underside of the strut.
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Figgering out where the strut goes

Figgering out where the strut goes

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Figgering what the fairings should look like and where the conduit fits.

Figgering what the fairings should look like and where the conduit fits.

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