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XF-48 Dark Angel

By Steve Lindeman

Scratch

The XF-48 Dark Angel is my latest concept fighter for the U.S. Air Force. The finished build will be 36.5" long with a 2" diameter. She will have twin tails and twin air intakes. I'm going to build it with a 29mm MM (mostly for flying on Estes Pro Series E and F motors). Wings will be 1/8" plywood and NC is hand made as is canopy.

To help aid in the design I am using OpenRocket 15.03 for the sim work.

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Parts (2017-09-10 13:24:09)

Here is what I have so far.

XF-48 parts

XF-48 parts

XF-48 bottom view

XF-48 bottom view (air intakes are 1" dia.)

XF-48 top view

XF-48 top view (I don't like the canopy so will redo it)

The tails will be two modified Big Daddy fins that I have left over from when I built the 3D MD (3D Mega Daddy) as I used plywood for its fins. I used two of the Big Daddy fins on Ram Jam III so I still have two fins somewhere. Just need to find them or I'll have to cut new ones.

OK, before someone asks, the front part of the wings were made from 3/32" balsa and the covered with cardboard to make them 1/8". I did this because I didn't have enough plywood. Still debating on whether or not to add TTW tabs. Wish I had had enough plywood to cut the wings with them, but with a little extra work I can add them.

I just ordered some Kevlar online so as  soon as it arrives will start on the MM. In the meantime, back to the canopy rebuild and the search for the two missing tail fins. 

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Tails (2017-09-20 13:44:32)

So I couldn't find the missing tails so grabbed some leftover balsa and cut new ones.

Tail parts 

I then laid out some wax paper and filled the slots with Elmer's WoodFiller. After allowing some drying time I then sanded and paper coated them.

Slots filled

Tails papered

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Wings attached (2017-09-20 13:57:31)

I decided not to try and add fin tabs and just go ahead and glue them on. Glad I double lined the wing mount lines on the BT as the plywood had a slight warp that needed attention. 

Wings attached

After giving glue time to dry I went back over all fillets with another layer of glue. I then set the rocket up for the night.

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Air scoops, Tails, & Canopy (2017-09-20 14:24:25)

Next day I added the air scoops, tails and canopy.

Air scoop added

First of two scoops glued on

Both scoops on

Both scoops glued on

Tails added

After scoops were glued on the tails were next.

Canopy added

Trimmed canopy added

Canopy added

Canopy added

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