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