AEON

Tim Breland's Descon-14 Entry

Talk about last minute, this thin' almost had t' fly with wet paint. ;)

My design is called t' AEON.

One definition o' Aeon is "an indefinitely long period o' time", me hearties, which is about how long this rocket might stay in t' air, arrr, indefinitely.

Stickin' with t' theme, me bucko, t' Aeon burns a total o' 6 motors. Well, blow me down! Begad! It is clustered and staged, me hearties, usin' 5 motors in t' booster and 1 in t' sustainer.

Construction is pretty simple. Begad! Ya scallywag! A parts list and fin patterns are included in t' pdf file. Aye aye! Pretty much all o' me parts came from Fliskits, matey, shiver me timbers, t' most unique bein' t' 5 motor cluster mount which has a central 24mm mount surrounded by 4 13mm mounts.

Sustainer:

Startin' with 2 BT70 tubes standard 17.5" in length, I cut a 70mm long piece from 1 tube t' use as t' booster. T' remainder o' that tube be coupled t' t' other tube t' make t' sustainer body, with a balsa nose cone on top.

T' sustainer got a standard 24mm motor mount, matey, makin' sure t' put t' aft centerin' rin' about 1" from t' end t' allow room for t' stagin' coupler. Blimey! Avast! This motor mount is 4" long with an engine block in place allowin' it t' hold and Estes E size motor.

T' sustainer fin pattern is in t' pdf file. Well, blow me down! Begad! 4 fins were cut from some high quality 1/8" balsa. Begad! Some may prefer thicker balsa or even plywood, shiver me timbers, but I wanted t' keep t' weight down. Avast, me proud beauty! Well, blow me down! T' fins were mounted with t' root end about 10mm up from t' end o' t' body tube. This be done just for t' look o' a gap betwixt t' sustainer and booster fins.

A basic recovery system be installed; 4' piece o' 1/4" elastic attached with t' tri-fold method and t' a screw eye in t' nose cone.

An 18" mylar chute from Rockethead Rockets be me choice o' recovery.

Booster:

For t' booster I started by assemblin' t' 5 motor cluster mount. T' central tube included with t' kit was cut down t' 70mm long. Aye aye! Blimey! This kit includes 4 centerin' rings. Avast, me hearties, me proud beauty! Blimey! I left t' forward CR out due t' t' shorter central tube, and t' allow room for t' stagin' coupler. Avast! Blimey! I also left out t' central motor block t' allow for staging. T' motor mount was then glued into t' 70mm piece o' BT that I cut earlier, flush with t' end. I then glued t' stagin' coupler into t' forward end. Again, me hearties, 4 fins were cut from 1/8" balsa and attached t' t' booster (pdf file has pattern).

Finishing:

After priming, shiver me timbers, I applied a basecoat o' Krylon Metallic Silver. Begad! I then masked off t' fins and nose cone, shiver me timbers, and finished t' rest o' t' rocket with a candy green. Aye aye! Aye aye! Unfortunately, t' tape marked t' silver, matey, me bucko, and I may have t' repaint one day.

Flight report:

After t' paint dried, me hearties, me hearties, I prepped her for flight. Ya scallywag! I knew it would get dark soon, me bucko, so I opted nay t' go fully loaded. Avast! Blimey! I went with a D12-0 surrounded by 4 A10-P's in t' booster, staged t' a C11-7 in t' sustainer. Well, blow me down! This added a good bit o' weight and I wasn't comfortable with t' Cg location. Ya scallywag! I then drilled 4 - 3/16" holes in t' base o' t' nose cone, added some BB's and secured with epoxy. This put t' Cg at about 17" from t' bottom, ya bilge rat, which is more than enough stability margin. Ahoy! So off t' fly. Begad! Avast! By now it's gettin' dark, arrr, although nay as dark as t' pics show, but I'm still worried about recovery.

I set her up, arrr, matey, push t' button, me hearties, and whoosh, man was that fast. Begad! Pics show nothing. Blimey! I obviously didn't get t' rocket in t' pics, because they're just black. Well, blow me down! Ya scallywag! I would guess it went about 1000', ya bilge rat, ya bilge rat, but it was probably lower, and I just couldn't see good. Well, I saw t' ejection, and thank goodness for mylar chutes. Without t' shimmer from t' mylar I probably would have lost it. Blimey! It came down in t' field next t' me home about 300 feet away. Luckily t' grass be cut over t' weekend and I be able t' find it pretty easily. Aye aye! Begad! I can't wait t' launch it with an E9 in t' sustainer.