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(BAR 41) Fleet Interceptor

Here's another rocket based on a Sci-Fi image.

The Open Rocket simulation shows it to be a stable rocket... but it'll need a swing test to prove the design.

2024-12-29

I knocked out a CAD Model/Dwg and headed out to the barn to try to make the Nose Cone. It's 50 F. here today and crazy windy... we're supposed to have cold weather on the way for early next week.

I cut a 13-1/4" long piece of 4x4, then turned the hub on my wood lathe. Then all those funky angles were cut on my Table Saw.

Pretty happy with the roughed out version. I'll need to do some sanding with my orbital sander but it looks pretty close to the artwork.

2024-12-30 Preliminary Drawings, Fleet Interceptor Sheets 1 to 3 Rev 00

Also updated the Open Rocket simulation and low and behold... stability is just over 1. Sweet!

2024-12-31

Lag Screw Eye: I drilled the Nose Cone, injected glue into the hole and then screwed the Lag into the Nose Cone.

Sanding: I took the time to use my Random Orbital Palm Sander to smooth off the exterior off the Nose Cone.

C-80: I applied Elmer's Wood Glue to the counter bore in the Nose Cone for the C-80 Tube. I then installed Gorilla Wood Glue fillets both inside the Nose Cone counter bore and then to the outside of the counter bore. I then spun the sub-assy, by hand, holding it at a 45 degree angle for an hour to evenly distribute the wood glue on the inner surface, then sat it "Nose Cone Up" to dry.

2025-01-01 Updated and finalized the drawing package, Rev 01

2025-01-03

I was flipping through some tube fin threads on TRF and stumbled upon a photo of "The Kraken". There's just something about tube fins cut at different angles, front vs back, that is so sci-fi looking.

So I submit Revision 02 of the Fleet Interceptor. It varies from the original sci-fi artwork, but it's so much better looking.

2025-01-05

Cutting The Tube Fins

I made a fixture for my chop saw to locate the C/L of the tube. It's a piece of scrap with 2 pieces of heavy photopaper glued to the bottom.

When you go to cut the tube you set the fixture on the chop saw table, use the fixture by rotating the tube until the c/l is at the tip of the fixture. Since the tube is angle cut on both ends... this is important in order to align those cuts.

I used some Elmer's White Glue to temporarily glue the C-60 to the BT-60 Tube Fins. After an hour I cut the BT / C-60 tubes using my chop saw. I used a snap blade knife to then cut the 1" wide section from the bottom of each tube, and re-glued the edges using Gorilla Wood Glue, then clamped the edges.

I revised the pod design by increasing the length from 3" to 4", and made the back section flat. Here's the revised drawing set, Rev 03

2025-01-06 Tube Fin Installation, Day 01

Started gluing the tube fins onto the C-80 Tube. I used the 1" wide strip of tube to hold the opening correct. Nothing to magical here... just using Quick Clamps, Rubber Bands, Thumbtacks and some small pieces of wood.

And my Circle of Friends.

2025-01-07

Installed Fin Tubes 3 & 4. I'll remove all the restraints tomorrow morning once the wood glue dries.

2025-01-08 In-Process Photo Shoot

Started cutting and gluing the Payload Bay Pods / Solar Panels.

2025-01-09

Payload Bay Pods / Solar Panels Day 02

I'm using some masking tape on the inside of the joints for these and clamping them to the edge of a 1" thick board until the glue dries. Then just masking tape and some glue to hold the pieces in place.

Also.... building up the Tube Fins glue fillets with some Titebond Quick and Thick.

I'm thinking about abandoning the Rear Transition Sub-Ass'y. The rocket just looks so good as is, I'm thinking the added weight and complexity of the shroud is unnecessary. I'll wait until after the Payload Bay Pods are in place though, and then make the final decision.