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Upscale Design -- SLS Tau Draconis
A 1.77X upscale of a design from 2008. The original flies on a 13mm engine, and uses the "Tau Zero" nose cone. This design requires a new nose cone, designated BC-11107. It fits the ST-11 tube, and is 10.7" long.
The ring tail tube is 4.5", and may need to be hand-crafted unless someone spots a suitable alternative. I've removed the tube data from other manufacturers out of my RockSim databases. Deployment velocities are a bit high, so use the nylon parachutes instead of the normal plastic type. Length: 37.70" Diameter: 1.84" (BC-11107) Fin Span: 6.874" Weight: 4.69 oz E12-4......604'......Dv 25 FPS......Requires 36" of a 48" x 1/4" rod......Avg of six runs Share and Enjoy!
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Craig McGraw BARCLONE Rocketry -- http://barclone.rocketshoppe.com BARCLONE Blogsite -- http://barclone.wordpress.com BARCLONE Forum -- BARCLONE Forum BARs helping BARs SAM 0044 AMA 352635 |
#2
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Quick update on the nose cone designation. I should append the letters "TZ" to the end of the identifier -- BC-11107TZ. That way, the "11107" part can be used for more than one item, and it will tell you what the shape is easily.
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Craig McGraw BARCLONE Rocketry -- http://barclone.rocketshoppe.com BARCLONE Blogsite -- http://barclone.wordpress.com BARCLONE Forum -- BARCLONE Forum BARs helping BARs SAM 0044 AMA 352635 |
#3
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Quote:
I haven't looked in awhile, but at one time, Totally Tubular had 4.5" tube for those wanting to build a full scale Arcas. Bill
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It is well past time to Drill, Baby, Drill! If your June, July, August and September was like this, you might just hate summer too... Please unload your question before you ask it unless you have a concealed harry permit. : countdown begin cr dup . 1- ?dup 0= until cr ." Launch!" cr ; Give a man a rocket and he will fly for a day; teach him to build and he will spend the rest of his days sanding... |
#4
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I looked through one of the older BTDATA files and spotted Rogue Aerospace's T-117 tube, which is 4.59" OD x 4.51" ID.
This is the LINK TO TOTALLY TUBULAR. TT's T-4.5" is 4.546" OD x 4.476" ID... I'll rework the plan to use this tube, which will give correct fin patterns.
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Craig McGraw BARCLONE Rocketry -- http://barclone.rocketshoppe.com BARCLONE Blogsite -- http://barclone.wordpress.com BARCLONE Forum -- BARCLONE Forum BARs helping BARs SAM 0044 AMA 352635 |
#5
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Revised Plan
This revision changes the ring to the Totally Tubular T-4.5 body tube, and modifies the support fin accordingly. The ring was also reduced to 1.25" from 1.375" as a way to reduce the Dv.
The weight was increased to 4.73 oz. The other size specs remain the same. E12-4......571'......Dv 27 FPS......Requires 37" of a 48" x 1/4" rod Share and Enjoy!
__________________
Craig McGraw BARCLONE Rocketry -- http://barclone.rocketshoppe.com BARCLONE Blogsite -- http://barclone.wordpress.com BARCLONE Forum -- BARCLONE Forum BARs helping BARs SAM 0044 AMA 352635 |
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