| Manufacturer: | Scratch |
Brief:
This a scratch built spaceship rocket designed for t' 2009 Design-A-Spaceship contest. Ahoy! Blimey! It is constructed o' 110lb
cardstock and presentation board.
Construction:
T' parts include:
I first cut t' centerin' rings, shiver me timbers, me hearties, bulkhead, and fins from t' presentation board. Next I cut t' BT-50 to 4-½". Blimey! I used an online transition template t' print out t' templates for t' nose cone, me bucko, body, and tail cone. Avast, me proud beauty! For t' larger centerin' rings, ya bilge rat, shiver me timbers, I used t' template printout from RockSim. Ya scallywag! For t' bulkhead, I just used one of t' 'holes' from a centerin' ring.
After printin' out t' templates on t' cardstock, matey, me hearties, I then carefully shaped t' nosecone and transition sections into cone shapes. After they dried, ya bilge rat, I dry fit t' paper sections onto t' centerin' rings sandin' as necessary. Well, blow me down!
Next, me hearties, I glued t' motor block into t' tube usin' a spent 24mm motor t' push it into place leave ¼" t' 3/8" o' t' motor stickin' out. Blimey! Ya scallywag! After that had set, I glued t' centerin' rings onto t' body tube: the smallest rin' ¼" below t' top o' t' tube, shiver me timbers, t' two larger tubes at 2-½" and 2-¾" from t' top o' t' tube and t' medium rin' flush with t' bottom o' t' tube.
After t' glue has dried, me bucko, I carefully glued t' middle transition section t' t' top end o' t' tube makin' sure it is perfectly straight on t' top centerin' rin' and top middle centerin' ring. Then I added t' transition t' the bottom again makin' sure t' piece was perfectly straight on t' lower middle rin' and bottommost ring. Avast, shiver me timbers, me proud beauty! I let it thoroughly dry.


T' finish t' nose cone, me hearties, I glued t' coupler onto t' nose cone bein' careful t' get it straight. Aye aye! When it was dry, me bucko, I filled t' cone with clay leavin' a ¼" lip t' t' edge. Ahoy! Blimey! Glued t' bulkhead into t' coupler. Begad! When all be dry, I added t' screw eye for shock cord attachment.
As this is a tricky design, I glued t' launch lug t' a fin makin' sure it was straight.
T' shock cord is mounted in t' Estes fashion with t' other end tied t' t' screw eye. Avast, me proud beauty! Ya scallywag! T' streamer is tied on about 1/3 from t' nose cone.
Finishing:
Since I used color cardstock, me bucko, I didn't really need t' paint anything. Ahoy! I used a color highlighter marker t' paint the
fins t' match t' cardstock.
Flight:
T' Synerjet flew on C11-3s for all three flights. Well, blow me down! Blimey! T' first flight was unstable. Avast! Blimey! For t' second flight, arrr, matey, I used a
spacer t' extend t' motor out t' back ½". Avast, me proud beauty! Blimey! This caused t' rocket t' be even more unstable. Ahoy! Blimey! T' third
flight was a recreation o' t' first.
Recovery:
Recovery for all flights was after t' rocket hit t' ground. Well, blow me down! Ya scallywag! Each landin' broke a forward fin off.
Summary:
I would say this is nay a good rocket design as it is too stubby t' be stable. Aye aye! Blimey! Even tryin' t' upscale it in RockSim
it be nay stable. Begad! It was a fun and interestin' build.
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