Dans mon Pou-du-Ciel


Drafted out lyre to print pattern — 2019-08-30 18:41:41

Drafted out a lyre that should fit. Will print pattern.

1.0 hours, $0.

Practiced cutting lightening holes — 2019-07-13 21:16:16

Sharpened a compass' legs to a knife-edge and a sharp point, respectively, using a grinder. Cut a couple holes in scrap plywood. It worked pretty well.

0.5 hours, $0.

Wrote script to scale and regularize airfoil coordinates — 2019-04-12 02:44:31

Wrote a script to scale airfoil coordinates to any specified chord, and regularize the x-coordinates to a given minimum integer spacing, eliminating those points which do not significantly contribute to an accurate outline.

1.0 hours, $0.

Re-drafted wing — 2019-04-03 12:54:34

Realized that my wing diagram failed to take into account plywood thicknesses in the spar webs, among other problems. Redrafted it more accurately.

2.0 hours, $0.

Adjusted tablesaw — 2019-03-28 01:26:12

Adjusted tablesaw to make accurate-enough cuts to rip fuselage members and wing rib cap strips.

1.0 hours, $0.

Practiced making scarf joints — 2019-03-26 23:22:51

Practiced making scarf joints in scrap plywood. Finally arrived at a method of fitting reliably with the power planer. (Freehand? — total fail.)

1.0 hours, $5.

Built workbenches — 2019-03-18 00:06:57

Built a couple of sturdy, square, level workbenches, 8'x4' each.

3.0 hours, $0.

Made CAD drawings of fuselage and wings — 2019-03-16 20:50:21

Made CAD drawings of fuselage and wings, to check my understanding of dimensions from Le Sport de l'Air. Made provisional weight and balance checks, to a poor approximation that that looks encouraging for being able to achieve a weight less than 115kg with appropriate balance. Engine mount will probably look a little ridiculous to achieve proper balance with a very light engine, though!

8.0 hours, $0.

Translated Manual — 2019-03-16 20:47:14

Additional work on translation of Le Sport de l'Air, translating sections on engines and engine mounting. Abandoned some as irrelevant to safe modern practice.

5.0 hours, $0.

Laid out rib truss members — 2019-02-16 15:50:55

Laid out rib truss members for 1400mm ribs after the HM.293 design, enlarged and altered to preserve HM.14 spar widths.

1.0 hours, $0.

Rib patterns — 2019-02-14 20:39:47

Wrote a Python script to generate actual-size PDF files of airfoils with capstrip dimensions marked out for rib layout. Printed full size at Office Depot.

4.0 hours, $100.

Plywood layout — 2019-02-12 05:47:57

Laid out plywood fuselage pieces on 5 scaled-down 61x61" sheets. Left enough excess to produce gussets and reinforcements specified in plans.

2.0 hours, $0.

Made build-log website — 2019-02-10 18:28:50

Made a website to serve as a build log for my own reference and that of others, as well as to prove to a DAR that I did the work if I fail to meet Part 103.

8.0 hours, $10.

Laid out cabin mockup side — 2019-02-09 02:59:02

Laid out one side of a mockup for the cabin in cheap ¼" plywood.

1.0 hours, $5.

Drafted out wing — 2019-02-09 02:51:43

Drafted out front and back wing to determine rib chord and spacing with 22% front spar centerline location.

2.0 hours, $0.