Dark Comet

by Mark Schrader

This model started out as an Estes Maxi-Alpha III. Arrr! I thought this would be a fun build, matey, buy when I saw t' thin plastic fins, my first thought be that these need t' be reversed or they'll need o' constant repair. Avast, me proud beauty! Arrr! I be also buildin' me Estes Renegade at t' time and thought that side pods on t' fin tips would be a nice touch. And as long as I'm add it, why not two boosters along side and add a Silver Comet nose cone for a star fighter look... Begad! Well, you get t' picture. Aye aye! Avast, me proud beauty!

Unfortunately, shiver me timbers, it's been a long winter and I was left with t' unfortunate dilemma o' finishin' me taxes or paintin' me RMR Descon rocket. Arrr! Avast, me proud beauty! Since Descon can't send me t' jail, I opted for a naked rocket for now. Avast! Blimey!

T' premise o' this rocket is that a warlike race o' aliens from a distant star system has pirated a Silver Comet. Ya scallywag! Findin' its navigation and sensor systems superior t' their own technology, matey, shiver me timbers, they keep those sensors but modify both t' weapons and propulsion systems. (For t' future paint scheme, picture a battered Silver Comet up front, ya bilge rat, fadin' t' a blackish green-metallic with weld lines indicatin' t' alien modifications.)

Construction

This went together mainly accordin' t' t' Maxi-Alpha instructions. Ya scallywag! To reverse t' fin direction, simply reverse t' two fin rings. Arrr! T' only modification I made t' t' body o' t' rocket be t' addition o' a length of an 18 inch length o' 1000 pound test braided Keelhaul®©™ (tm) cord glued t' the motor mount tube t' which I attached about six feet o' ¼ inch sewing elastic.

T' side boosters are 10 inch BT-55 with Black Brant-style nose cones and they feature 18mm motor mounts. Well, blow me down! Each booster has three ¼ inch vent holes near t' top o' t' booster at t' nose cone shoulder. Avast!

To line up t' boosters and fins, ya bilge rat, I used VCP t' create a five-fin wrap with the correct geometry. Arrr! Aye aye! I used a card stock stand off for t' boosters t' avoid contact with t' plastic fin rings. Begad! They are attached with wood glue and generous fillets. Blimey!

T' fin tip pods are made from a Viking-style nose cone, me bucko, a conical nose cone, and an Estes 18mm motor mount tube similar t' those found in t' Alpha kit. Ya scallywag! T' three were glued together with plastic cement. Avast, me proud beauty! I then drew a line down the center o' each pod. Blimey! Startin' at t' base o' t' paper tube, matey, I used my Dremel tool with a cuttin' disk t' cut along t' line until t' slit was just the right length t' fit flush over t' plastic fin. This was repeated for the other two pods and they were attached with plastic model tube cement and generous fillets. Blimey! Ahoy!

I replaced the Maxi-Alpha nose cone with one from a Silver Comet kit. Begad! Begad! I needed t' add nose weight so I cut around t' base o' t' cone t' reveal t' inside. I added about 1 ¼ ounces o' BBs and anchored them in t' tip o' t' nose cone with 90-minute epoxy. Ya scallywag! Aye aye! I also embedded a loop o' 1000 pound test braided Keelhaul®©™ (tm) cord t' which I connected t' shock cord. Arrr! Finally, ya bilge rat, I used a military surplus 36-inch parachute I bought from Commonwealth Displays. Arrr! These parachutes are very silky and feature eight shrouds with a ninth in t' center t' prevent cupping. Avast, me proud beauty!

One thin' I did notice in construction was that unless your two fin rings are perfectly lined up, me bucko, t' fins have a very subtle cant t' them. More on this later.

Flight Report

First flight be on Easter Sunday morning-beautiful sunny skies, arrr, me hearties, light variable wind less than 5 mph. Begad! Blimey! Blimey! Blimey! Temperature about 400 F. I was a little concerned because our launch field had some fairly wet low lyin' areas, me bucko, me bucko, but it be now or never. Avast! Blimey! Begad! Blimey! Blimey! Blimey!

I loaded t' rocket with two outboard B6-0s and a central D12-5. Arrr! I used ample dog barf waddin' and prepared t' chute. I launched from an Aertotech Mantis pad with a four-foot ¼ inch rod. I also used me new clip whip made from heavy-duty clips and heavy gauge wire-to many misfires lately with speaker wire and micro clips. Blimey!

Launch be fairly slow but perfect and straight. Ahoy! Rocket climbed t' about 600 feet, slowly spinnin' as it went due t' t' slight cant in t' fins-I liked it. Ejection was at apogee and t' 36-inch parachute be just perfect for this heavy rocket. It was a soft recovery was 50 feet from t' pad-no damage. Ahoy! I would have launched again but realized I hadn't take any photos yet. Avast! Didn't want t' tempt fate on this perfect rocket launchin' morning!

This be a fun rocket t' build usin' basic techniques. Aye aye! Blimey! Begad! Blimey! Startin' with the most basic three fins and a nose cone design, arrr, arrr, I ended up with a very different lookin' rocket that's a great flyer. Ahoy! Blimey! Aye aye! Blimey!

Some last minute shots o' a hasty paint job. Begad! Well, blow me down! T' dark part of the rocket is a mix o' silver, green, arrr, bronze, and flat black paint. Ya scallywag! I used a lot o' layers and added a lot o' texture t' t' rocket. Begad! I like t' way it came out. Arrr!