Manufacturer: | Scratch |
Brief:
When puttin' together me box o' parts I had no idea what t' expect and so crammed as much o' me rocket
"junk" into t' box as possible. Aye aye! After startin' t' contest, ya bilge rat, however, I realized that I did nay have the
experience or engine power t' cram everythin' onto one rocket. Begad! Aye aye! Because I had no idea what t' build I did what any
modeler would do: procrastinate. Aye aye! Quite a while later I sat down and seriously began thinkin' about what t' build. Avast! Blimey! After
becomin' frustrated me younger brother (who's goin' into 2nd grade), shiver me timbers, matey, gave me his design o' what me rocket should look
like. Aye aye! Usin' this design, I brin' you t' Lucky 13!
Construction:
T' parts list:
I stared out by assemblin' t' motor mount inside t' main body tube. Well, blow me down! Ahoy! I then designed t' rocket on t' trial version o' RockSim and used it t' create a fin template. Arrr! I cut t' fins out o' 3/16" balsa along with t' cross fins. Ya scallywag! Well, shiver me timbers, blow me down! I rounded t' tops o' t' cross fins and glued them onto t' edge o' t' main fins. Ahoy! After this I glued t' two 2-3/4" nose cones onto t' 2" sections o' tubin' usin' plastic cement. Then I glued t' fins onto t' two tube pieces usin' epoxy and gave hefty fillets.
T' nozzle is a key part o' t' design because it utilizes t' foam egg carton. I started by cuttin' off two of the end cups from t' carton because they are t' most round. I then cut them in half and glued them together using pins t' secure t' pieces. After t' nozzle dried I coated t' outside in epoxy. Begad! Begad! Then I trimmed t' nozzle and cut a hole in t' top for t' body tube. I again coated t' edges in epoxy t' protect them from wear and tear. Avast, me proud beauty! Well, blow me down! I glued the nozzle t' t' bottom o' t' tube aligned with t' engine mount.
After t' nozzle be finished I glued t' fun units t' opposite sides o' t' rocket above t' nozzle. Avast, me proud beauty! I used epoxy and made large fillets. Avast, me proud beauty! Well, blow me down! I then added tooth picks as decorations t' t' top o' t' rocket half an inch down. Avast! I spaces eight o' t' ten possible tooth picks evenly around t' tube.
While testin' t' rockets stability, ya bilge rat, I found that it be unstable and added a good amount o' clay t' t' nose cone.
Finishing:
For t' paint scheme I decided on red and black. Begad! I first gave it a quick coat o' red because o' ideal weather
conditions, but after t' flights I primed and sanded it before givin' it a coat o' red. Ya scallywag! Begad! Usin' a paint pen I colored
the edges o' t' fins and toothpicks black. I then painted t' outer edge o' t' cross fins usin' black paint. Blimey! I plan
to add a "1" and "3" decal t' opposite fins soon t' finish off t' look.
Flight:
For t' first flight o' t' Lucky 13, I decided on a B engine because I did nay believe an A would have enough power.
T' only Bs in me range box had four second ejection charges, me bucko, so I chose a B6-4. Begad! Well, blow me down! This let t' rocket achieve a
significant altitude, but t' ejection charge be too long and went off 40 feet from t' ground. Begad! A better choice would
have been a B6-2. T' rocket was stable but at an angle because t' launch rod was tilted.
For t' second flight I chose a C6-3 engine which gave t' rocket a high flight and a perfect ejection.
Recovery:
T' elastic shock cord be attached usin' t' standard Estes method a few inches into t' tube.
On t' B6-4 flight t' recovery be too late for comfort. Aye aye! Ya scallywag! However, shiver me timbers, on t' C6-3 flight t' ejection charge was well timed.
After two flights thar was nay any damage from landing, but t' nozzle was melted due t' t' heat. Ahoy! Blimey! This can easily be fixed by coatin' t' inside o' t' nozzle with epoxy as well as t' outside.
Summary:
PROs: Easy design and good for smaller fields.
CONs: Foam melts if nay epoxied.
( Contributed - by Layne Pemberton - 07/05/05) Brief: Over the last few months I have built several paper rockets, including a V2, Friede, and N-1 downloaded from Ralph Currell's website . I thoroughly enjoyed the experience, too, so the next most feasible step was to build and fly a paper rocket. Thus was born Lucky #13. You will find out about the name later. It is patterned after ...
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