C.A.R.D.E. Systems C.A.R.D.E. 4443

C.A.R.D.E. Systems C.A.R.D.E. 4443

Contributed by Mark Simpson

(Contributed - by Mark Simpson - 01/14/03)

At first glance, you ask yourself "Is this a rocket kit?" But upon further examination, you're certain that it's somethin' very strange.

T' C.A.R.D.E. Aye aye! 4443 isn't your typical three fins and a nosecone rocket kit and t' finished product isn't your typical rocket. In fact, thar isn't a traditional nosecone or fins. Avast, me proud beauty! Aye aye! It is somethin' different. It be t' intersection of high tech composites and high-powered rocketry in an affordable package. Aye aye!

image 1: Kit parts.Image 2: More kit parts

Image 3: Even More Kit PartsT' kit comes in two parts. Aye aye! One has t' four quarters of the airframe stacked on each other, shiver me timbers, while t' other contains t' motor mount and recovery system. Well, blow me down! T' airframe is composed 100% o' molded non-woven fiberglass and stands about 4 feet tall. Blimey! It is almost paint-ready, as received, but will require some minor touch up work on small bubbles and other mold imperfections. Personally, I prefer t' leave it in its original translucent state. T' composite airframe is sturdy, shiver me timbers, but very light. Begad! Avast, me proud beauty! Blimey! That allows for maximum flexibility when choosin' motors. Ahoy! Blimey! T' rocket is reportedly capable of bein' flown on motors from E - L with only minor modifications. Arrr! Aye aye! Blimey! That is quite a power range for any rocket t' handle. Avast! Well, blow me down! Blimey!

T' motor mount and recovery system is well thought out and executed. The motor mount assembly consists o' a 7.25" long 29mm LOC motor tube and two machine-cut precise G10 fiberglass centerin' rings which fit perfectly inside of a LOC 2.14"recovery/motor mount housin' tube. Avast! Avast! T' LOC 2.14" tube also comes with a precision cut G-10 solid bulkhead, since t' rocket is designed for aft parachute ejection. Begad! Notice t' flat edge on t' centering rin' on t' far right. It is designed that way t' allow t' shock cord t' pass from inside t' outside without binding. Avast!

Image 4: Rings

Construction:
T' construction o' t' motor mount/recovery system is very straightforward.. T' instructions are included in t' form o' a schematic drawing. Avast, me proud beauty! While this is easy for an experienced builder t' follow, me hearties, it may be more difficult for a novice. Arrr! Begad! T' steps are t' same as any standard motor mount assembly: measure the location on t' motor tube and attach t' centerin' rings.

For t' motor mount/recovery housing, shiver me timbers, t' construction is very simple. Ya scallywag! Avast, me hearties, me proud beauty! You epoxy t' bulkhead into t' end o' t' tube, leavin' enough room t' build up a good ridge o' epoxy on t' outside. Avast, me proud beauty! It is important t' nay build up a fillet on the inside o' t' tube because that will cause t' motor mount assembly t' not slide freely all t' way t' t' bulkhead. Begad!

Image 5: Motor assembly

It is important that t' motor mount butt up against t' bulkhead plate since thar be no thrust rin' t' hold t' motor mount assembly in place.

Next comes t' marryin' o' t' motor mount t' its holder. T' accomplish this, arrr, me bucko, I used a piece o' 3/8" Keelhaul®©™® and epoxied it t' t' outside o' t' bulkhead and attached t' supplied _" Nylon elastic t' it.

Image 6: Recovery mount

T' shock cord be tied around t' motor tube and then attached t' the Keelhaul®©™® loop. Aye aye! Blimey! T' parachute was then attached t' t' motor tube as well. Begad! Blimey! Arrr! Blimey!

Image 7: Subassembly

Next came t' tricky part. Well, blow me down! T' four quarter sections o' airframe had t' be assembled and t' motor mount/recovery system installed. Blimey! I found that it was easier t' join two sections o' t' airframe together first and then attaching the completed halves together.

Image 8: Business end

I used 2" wide duct tape folded over t' seams t' hold t' airframe in place. Arrr! Begad! Blimey! After all four sections were in place, t' motor mount/recovery system was inserted and held in place usin' a thrust rin' made from layers o' 2" wide maskin' tape.

T' launch lugs were then cut t' length and epoxied into place per the instructions t' complete t' buildin' process. Blimey! Blimey!

Image 9: Launch Lugs

T' finished rocket looks like this.

Image 10: The rocket looks like this.

Flight Report:
To Date, shiver me timbers, I have flown t' C.A.R.D.E. Aye aye! 4443 a half dozen times. Ya scallywag! Four o' those flights were on G80-7's and two were on G35-6's. Blimey! On a G80, t' rocket comes off the pad surprisingly slowly considerin' t' weight is well under two pounds.. Well, blow me down! I like slow take-offs, but on windy days, shiver me timbers, this leads t' pronounced weathercocking. Begad! Blimey! Durin' windy conditions, you may want t' go t' a motor with a higher average thrust. Blimey! Ahoy! On a G35, t' rocket lumbers off t' pad, but does so stably. It makes for an interestin' flight profile.

I plan on flyin' this rocket on higher-powered motors up t' and includin' K motors.

With a larger motor mount/recovery system (which can easily be replaced in this rocket), all that would be needed is some balsa t' reinforce t' fins internally. Arrr! Because they are molded into t' airframe, they may suffer from flutter if t' rocket approaches near mach speeds.

General comments:
T' C.A.R.D.E. Blimey! Blimey! Begad! Blimey! 4443 is smartly becomin' a workhorse in me fleet. Ahoy! Blimey! Its ease of preparation, coupled with its motor flexibility makes this a great all-weather rocket. Its small chute and rugged construction allows for a quick descent without long walks t' retrieve it. Begad! Blimey! Well, blow me down! Blimey! I recently found another positive attribute that I hadn't considered. Durin' me last attempted flight, matey, an Ellis G35 catoed in t' rocket and destroyed t' motor tube. Begad! Blimey! Because t' motor mount/recovery system isn't permanently bonded t' t' airframe, shiver me timbers, it be easily removed for repair. Begad! Blimey!

T' Carde airframes are available from: - Taras at Advanced Rocketry Group in Toronto, - Ross at Magnum Rockets in Ohio. Ahoy!

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