KitLog pro

Powered By Kitlog Pro v2.0

Home of the Spodplane
' style=
Date:  8-26-2021
Number of Hours:  2.30
Manual Reference:  18-14CC
Brief Description:  Canopy and canard cover lips

Not a lot of progress lately. Monday was my eldest son's 6th wedding anniversary. He got to spend it speaking at his wife's funeral. Farewell Jakki. On top of ongoing COVID nonsense this is a gloomy time.

I am running a bit low on BID, so decide to try taping with UND. Try cutting some UND at 45 degrees and struggle a bit, until I realise I can see the pattern at 45 degrees with the cross threads showing up as dots it the light is right. It is harder than spotting the 45 degree lines with BID, but doable. I will add plies to match the thickness of the plans BID. The thinking is that 2 x UND tapes cut at 45 degrees, and applied with the threads crossing at 90 degrees is structurally the same as 1 x BID, with the strength adjusted with additional plies to achieve the same thickness. This will only work when the UND can follow the shape to be taped.

With the nose door off, layup 4 x BID from the leading edge of the fixed canard cover onto the nose, overlapping onto the canard a bit.

For the canopy frame onto the taped fuselage top I chickened out and had the outermost ply 1 x BID, with 7 x UND underneath (the last ply herringboned at the centerline), wet out on peel ply and transferred, extending to the longeron. I discover after moving on from the BID that the UND is brilliant as a tape. It is a little more work due the extra plies, but instead of a 1" overlap for joins you always just butt up the joins. The UND tapes do unravel more readily than BID, but still work OK. Applying the tapes directly onto the work is MUCH easier than BID. Brilliant!

Replace the nose door, with the underside taped and apply a tape from the fuselage top onto the taped nose door and fixed canard cover, 6 x UND cut at 45 degrees, and plies crossing at 90 degrees. I stop at the longerons, but realise later I should have gone to the edge of the elevator fillet.
' style=

Lip #1

Lip #1

' style=

Wetting out lip #2 on peel ply, not actually required for UND tapes I discover

Wetting out lip #2 on peel ply, not actually required for UND tapes I discover

' style=

Lip #3

Lip #3

' style=










Copyright © 2001-2024 Matronics. All Rights Reserved.