01-14-2009, 11:45 PM
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BARCLONE Rocketry
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Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
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Revised Design -- WAC Corporal with Tiny Tim booster
This model was just meant for Carl's 3/4-power core-bore B and C booster engines. I was able to stick with 18mm power in both stages, and all of the Dv's are well under 20 FPS. Sixty percent of the flights come in under 10 FPS.
The downside? Building that interface between the booster and the WAC. I drew it with an HTC-7B coupler to slip over the sustainer engine tube (which is probably enough), and with a half inch of the rods pushed into pockets in the rear transition of the WAC. The real booster worked this way (sort of - they didn't have a large HTC-7B coupler with two vent holes on the real one).
For simplicity, I used the same ST-11 tube for the booster. The truth is, the ST-11 is true-scale for the booster, but slightly small for the WAC. Close enough, though, for this Deci-Scale program.
Length: 28.88"
Diameter: 1.25" (Transition rim; Body Tubes ST-11)
Fin Span: 5.20" (RockSim is whacked out with 8.564" -- pending reply from TVM)
Weight: 2.01 oz
All engines are from Semroc private data. All launch rods 36" x 1/8".
3/4 B7-0 / 1/2 A6-4........446'......Dv 12 FPS
3/4 B7-0 / A4-4R...........485'......Dv 14 FPS
3/4 B7-0 / A5-5............644'......Dv 5 FPS
3/4 B7-0 / 3/4 B7-6........819'......Dv 14 FPS
3/4 C19-0 / 3/4 B7-6......1050'......Dv 4 FPS
3/4 C19-0 / B4-6..........1194'......Dv 11 FPS
3/4 C19-0 / B6-6..........1204'......Dv 3 FPS
3/4 C19-0 / B3-6R.........1229'......Dv 7 FPS
3/4 C19-0 / 3/4 C6-6......1464'......Dv 8 FPS
3/4 C19-0 / C6-6..........1675'......Dv 5 FPS
Enjoy!
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