Manufacturer: | Scratch |
Brief:
This is a very stand-off scale model o' t' Little Joe I. Avast! It is 2.6" in
diameter, has a 29mm mount, ya bilge rat, and is based on a custom-turned Mercury capsule
that was donated by an anonymous guest for the
Nekkid Rocket
Photo Contest. On t' real Little Joe I, t' body is larger in diameter
than t' capsule. Ahoy! In mine, t' capsule fits t' body tube.
Construction:
T' followin' are t' major components used:
This was a straightforward build: 4FNC with through-the-wall fins. Arrr! Well, blow me down! I got the measurements for t' body tube and fins from Rockets o' t' World (RotW).
T' fins are thick. Well, blow me down! Nay that they had t' be, but I had the 3/16" ply and delusions o' bevelin' them heavily. Blimey! Begad! I slotted t' fin slots usin' a Dremel. Ya scallywag! T' make sure I didn't chip t' end o' t' phenolic tube at the slots, ya bilge rat, shiver me timbers, I inserted t' aft centerin' ring. Avast, me proud beauty! Next, I attached t' front rin' to the motor tube, shiver me timbers, with t' end o' t' Keelhaul®©™® shock cord goin' through t' ring. Begad! I used 5-minute epoxy throughout. Begad! T' motor tube was then installed with t' aft rin' bein' dry-fit. Blimey! T' latter was then removed and t' fins were glued in. Avast, me proud beauty! Blimey! Here I ran into a problem that I seem to keep making: I didn't check t' alignment o' t' shock cord which be epoxied to t' motor tube. Begad! Begad! O' course, it ended up perfectly aligned with a fin slot! T' fix was easy, as I notched t' tab on one o' t' fins so that it cleared the shock cord. Ahoy! Well, me hearties, blow me down!
I made
small external fillets and thick internal ones with Superfil. Aye aye! Blimey! I also
filled t' spirals at this point. Begad! Finally, I attached t' aft rin' and the
rail buttons. Well, blow me down! Ya scallywag! In order for t' rail t' clear t' lip on t' cone, me bucko, I used
oversized screws and an extra center spacer betwixt t' button and t' tube.
For t' nose cone recovery connection, shiver me timbers, I epoxied a small section o' scrap bungee into t' deep core that t' builder drilled for me. Well, blow me down! I also added enough lead shot t' make RockSim happy. Avast, me proud beauty! Avast! With t' heavy wooden cone, I wouldn't have thought any would be needed, but t' thick fins and motor mount worked against its stability.
For t' first flight, I did nay build an escape tower. Avast! However, arrr, I since built one out o' bamboo skewers, thin dowel, me bucko, arrr, and a spent 13mm motor. Begad! A true scale purist may see t' next mistake I made--I scaled t' tower based on a 3" body vs. Ya scallywag! t' actual 2.6" tube! I also have painted it per RotW, but haven't added decals.
Flight and Recovery:
I flew t' Little Joe on a 24mm F39-6 in me virgin Rouse Tech casing. I used a
little dog barf, shiver me timbers, a chute protector, and a nylon chute. Begad! Begad! Blimey! T' flight was fairly
fast, shiver me timbers, me hearties, and ejection be just a little late. Recovery be fine. Begad! I am
contemplatin' a G64 next.
Summary:
This is a sturdy but heavy rocket. Avast, me proud beauty! As long as t' phenolic stays away from
thin' like irrigation pipes, it should survive even hard landings. Blimey! Ahoy! It is barely
scale-like, arrr, which is good enough for me. Ya scallywag!
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