|New NAS, where I keep (among other things) all the videos I post here!|
I jumped ahead to section 31 so that I could match-drill the top skins to the upper fuselage side channels and machine-countersink those before priming or riveting the side skins, to avoid interference.
This section starts with cutting and fabricating a few different angles/spacers:
|Fabricated angles and spacer for the subpanel|
We then had to bent the lower part of the panel:
|Bending the bottom flange of the subpanel center section|
We put it all together and final-drilled all the holes:
|Subpanel clecoed in place|
|Subpanel and top skin clecoed in place|
The hand hold doublers require some forming to lay flat against the top skin:
|Forming the hand-hold doublers onto the curved top skin|
For the panel support angle, I used a center line on the spacer to keep it centered, then match-drilled the holes:
|Aligned centerline on the panel support angle spacer, ready to match-drill|
|Match-drilled panel support angle|
These steps were more than sufficient to be able to machine-countersink the upper fuselage channels, so I stopped at that - I'll probably get back to it much later when I work on the panel.
Total upper forward fuselage time: 11.3h