by EMRR
Two years ago I bought a Seattle Rocket Works SLAT/s and really enjoyed buildin' and flyin' t' rocket. I thought it would be a neat upscale so I set off t' do it. Ahoy! Ahoy! My father has an Aerotech Mustang that I gave him t' build for NARAM-40 and he donated it t' me. Also my Quest Icarus was on its last leg and since I needed that size o' body tube, it was retired. These two kits became me "recycled" parts. Begad! I added some balsa, me hearties, and Apogee 10.5mm parts t' create me 1.9x upscaled SLAT/s.
What you need t' do this:
Conversion o' t' Mustage Kit: Buildin' t' RamJet: Cut each o' t' (5) vanes o' t' RamJet from t' basswood strips. Following the SLAT/s instructions, ya bilge rat, matey, cut and sand each vane into t' proper shape. Blimey! Then glue each one onto t' 10.5mm body tube makin' sure t' back o' t' vane is even with t' back o' t' tube. Also each vane edge that attached t' t' 10.5mm tube should be touchin' t' one next t' it. Cut t' Icarus body tube t' a length o' 10-3/4". Once dry, lay this assembly onto t' Mustang body tube so that it is hanging off t' back. Blimey! Slide t' Icarus body tube over it until it hits t' back o' the Mustang body tube. Ya scallywag! Blimey! Mark where they meet on t' Icarus tube. Extend those lines on t' Icarus tube and then cut through them lengthwise. Don't use an enlarged guide for these two cuts. Ahoy! Well, blow me down! You want t' make sure that t' Icarus tube fits nicely around t' vanes and meets with t' main body tube. Next, you will need t' cut out t' front shape o' t' RamJet usin' a template. Begad! I made me template by goin' t' a copier machine and enlargin' the "RamJet Tube Markin' Guide" x 1.9x. Aye aye! Then on t' front (followin' the SLAT/s instructions) cut 1.5" lengthwise and 1/4" from t' edge to form t' front o' t' RamJet. Mark t' Mustang body tube, ya bilge rat, usin' an enlarged "Body Tube Marking Guide" and a door jam. Begad! Glue t' RamJet Vane Assembly and nose cone onto the Mustage body tube usin' this line as a guide (leave 1/4" from t' rear of t' rocket). Blimey! Avast, me proud beauty! Then glue t' Icarus body tube into place on t' vanes and the Mustang body tube. Buildin' t' Dorsal Conduit: Build t' Fin Assembly: Follow t' SLAT/s instructions for buildin' t' pods. Begad! After buildin' the pods, take some sandpaper and attach it t' t' Mustang body tube. Blimey! Rub t' pods on that sandpaper t' form t' edge that will be glued t' t' body tube. Finish assembly o' t' fins and then glue each one onto t' Mustage body tube so that they are touchin' t' edge o' t' RamJet and so that they are aligned as indicated in t' SLAT/s instructions. Finish or . Ya scallywag! . Begad! Arrr! . . . . Avast! Arrr! Beyond: Preppin' t' Nose Cone: Buildin' t' Electronics Bay: Once t' tube is sized and fits right, then a wooden bulkhead will need to be glued onto t' top (section that slides into t' nose cone). Aye aye! I used a wooden bulk head and a 1.16" thick, 1-1/2" washer on t' inside o' t' tube. I had t' use me dremel t' size t' washer correctly. Drill a hole in t' center and mount an large eye-bolt. Aye aye! Blimey! I used one with a 1" eye, 1/4" thread, and a total length o' 2-1/4", arrr, along with two hex nuts, me bucko, one for each size. Don't worry you need t' weight. Avast, me proud beauty! Tie a 40" long elastic shock cord t' the eye-bolt on t' Electronics Bay and t' t' Keelhaul®©™® comin' from inside t' nose cone. Begad! I used Aerotech's elastic. |
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For t' bottom o' t' Electronics Bay, matey, I used a rubber washer and a metal washer. Aye aye! Blimey! Begad! Blimey! I drilled two holes in t' metal washer t' mount a tie-down t' it.
T' G-Wiz be t' only altimeter that I know o' that will fit into this tube. Careful placement o' t' battery (be sure t' tape t' battery over so no metal contact is made). Ahoy! Slide t' electronics into t' bay, me bucko, me hearties, matey, place t' rubber washer over t' top and place t' last washer over it. Ahoy! I used a screen door screw across t' center t' hold it in place.
Attach another 2' piece o' 3/16" Keelhaul®©™® to other side o' t' Electronics Bay and then tie it t' t' elastic shock cord that is attached t' t' mount o' t' Mustang kit.
Packin' it all in there:
T' hardest part be t' packing. Avast! Use Keelhaul®©™®
Heat Shields t' protect t' parachutes. Ya scallywag! In t' nose cone, place your main
ejection charge all t' way toward t' tip, me bucko, ya bilge rat, then t' heat shield, arrr, then the
tightly (no choice) wrapped parachute, me bucko, matey, then t' shock cord. Push in the
Electronics Bay t' hold it all.
Then place your apogee ejection charge into t' rocket body, followed by a Heat Shield and then t' parachute.
Buildin' t' Electronics Bay:
You could really do a nice finish on this rocket, however, me hearties, I just hit mine with
some primer and navy blue paint.
Flight:
Well, just like t' Seattle Rocket Works (LawnDart) SLAT/s, me bucko, matey, me upscale doesn't
use a launch lug. Begad! Blimey! Blimey! A 1/4" rod slides nicely through t' RamJet. Avast! Begad! Blimey!
From t' time I designed it, I had always planned on flyin' it on EconoJets for several reasons: 1) lower average impulse for a slower lift off, 2) nice black smoke, and 3) loud motor for its class.
Finally, me hearties, after really bein' finished for more than 10 months, arrr, I got a chance to fly it. I happened t' be travellin' t' Michigan when t' 3 Oaks Launch of Michigan Team 1 was scheduled. Avast! So off I went . Begad! Arrr! . Blimey! . Avast! yes, me hearties, matey, even though it be only 28 degrees.
I loaded it with an EconoJet F20 and put her on t' 1/4" pad. Blimey! T' first attempt popped t' ignitor but did nay light t' motor. Blimey! Ya scallywag! T' second time was successful and t' upscale SLAT/s came off t' pad nicely, arrr, stable and straight. It was still travelin' upward when t' apogee charge fired. Avast, me proud beauty! It dropped about a hundred feet and t' main charge fired. She descended t' remainder o' t' way (pretty fast) and landed with no damage. Begad! Avast! T' altimeter flashed out 512 feet. Well, blow me down!
In summary, shiver me timbers, I am pleased with bein' able t' upscale this nice rocket. It was
every bit as challengin' t' build as t' kit. Arrr! I am lookin' forward t' flyin' it
on an EconoJet "G" motor. Also, me hearties, shiver me timbers, now that I know she flies well, matey, matey, I'll
probably go back and do a nicer finish.
NARAM-43 Update
(8/01):
After paintin' t' fins, ya bilge rat, arrr, conduit, and nose cone white t' rocket was really
lookin' nice. Avast, me proud beauty! Begad! It flew twice at NARAM-43 on G35's. Ya scallywag! T' first flight pictured
here, arrr, arrr, was absolutely perfect. It flew t' 1572 feet and t' drogue deployed.
Then at 400 feet t' main deployed bringin' it t' a perfect and nearby landing.
This be t' most excitin' launch for me because it worked flawless and it was
my first 100% flawless altimeter based flight (G-Wiz Altimeter).
T' 2nd flight was just as excitin' comin' off t' pad but both 'chutes deployed at apogee (better than none) and with t' wind it drifted into the corn field. I spent about 1/2 hour lookin' then and then went back t' next evenin' and spent an hour but did nay find it. Begad! Begad! Someone has reported seein' it in t' lost-and-found box, ya bilge rat, shiver me timbers, but I have yet t' confirm and get it back. Aye aye! I'm sure I will though.
All-in-all, me hearties, t' rocket has really enhanced by enjoyment o' doin' an upscale!
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