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  #1  
Old 01-24-2011, 11:08 PM
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blackshire blackshire is offline
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Default Semroc logo rocket kit?

Hello All,

I was just looking at the "rocket-transecting-sign" Semroc logo on the Semroc web site www.semroc.com when a thought came to me:

Since Semroc produces a kit of the "Launch Missile" (from the logo [or is it called the "masthead?"] on the front cover of each issue of "Launch" magazine), how about if they produced a kit of the rocket that appears in their own logo? From the look of it, an Astro-1/Astrobee 350 nose cone with a 1.04" diameter ST-10 body tube would be a good "fit."

What d'y'all think?
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  #2  
Old 01-24-2011, 11:35 PM
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The logo rocket is unremarkable when not in high perspective. It is a BT-20 13" long with sort of Explorer fins.
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  #3  
Old 01-25-2011, 01:21 AM
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Quote:
Originally Posted by Carl@Semroc
The logo rocket is unremarkable when not in high perspective. It is a BT-20 13" long with sort of Explorer fins.
But simple *is* beautiful! (Thank you for posting the "non-perspective, perpendicular" view of the Semroc logo rocket.)
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http://www.lulu.com/product/cd/what...of-2%29/6122050
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  #4  
Old 01-25-2011, 09:41 AM
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Default

Quote:
Originally Posted by Carl@Semroc
The logo rocket is unremarkable when not in high perspective. It is a BT-20 13" long with sort of Explorer fins.
It looks like a stretched, 4-finned Astron Mark

Doug

.
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  #5  
Old 01-25-2011, 10:06 AM
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I agree with Jason ... There's beauty in simplicity. I'm thinking "Carlisle mini"...
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  #6  
Old 01-25-2011, 11:42 AM
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CPMcGraw CPMcGraw is offline
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Exclamation SEMROC LOGO Rocket

Here's a quick interpretation of that design. It may be a little longer than what Carl mentioned, but I think I got the proportions right. I worked up the graphics in Corel DRAW.

Length: 15.25"
Diameter: 0.736" (BT-20)
Fin Span: 2.74"
Weight: 0.4 oz


1/4 A3-3T......134'......Dv 12 FPS
1/2 A3-4T......318'......Dv 9 FPS
A3-4T..........640'......Dv 20 FPS


This model doesn't need full-tilt 18mm engines. 13mm A3's are plenty enough to lose it.

Enjoy!
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Name:  SEMROC LOGO Rocket.jpg
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File Type: rkt SEMROC LOGO Rocket.rkt (52.8 KB, 6 views)
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  #7  
Old 01-25-2011, 12:06 PM
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It is deceptive. The fins are somewhat smaller and the nose cone is an ogive 3.0" long (which we don't have right now.)

It was tweaked to get the right look in perspective mode. Even the decal was stretched to make it look right. I agree on the 13mm engines. BT-20 and ST-7 models are getting too small for 18mm engines in the fields that are still available around here.

Thanks Craig. You are fast with the Rocksim and Corel.
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File Type: rkt SEMROC LOGO Rocket.rkt (52.6 KB, 10 views)
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  #8  
Old 01-25-2011, 01:56 PM
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Well, let us know when the nose cone and the laser-cut fin set is available and we'll take it from there <GD&R>! For that matter, the fins are simple - we can cut 'em. And a 2.95 inch ogive (BNC-20G4) oughta be plenty close enough!

Here's an OpenRocket file with a "T" motor mount in it, based on the .rkt file Carl posted. An "A" is plenty.

Fins changed to rounded edges, nose cone changed to 2.95 inch BNC-20G4, along with the mini motor mount with hook.
Attached Files
File Type: ork SEMROC LOGO Rocket.ork (1.6 KB, 7 views)
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Last edited by BEC : 01-25-2011 at 02:13 PM.
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  #9  
Old 01-25-2011, 04:49 PM
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Default Fin Sheet Pattern

So, here's the fin sheet for Carl's 'death ray'...
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  #10  
Old 01-25-2011, 05:05 PM
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Default ...And here's the decal...

Three versions, one each for CDR 10 and 12, and one PNG...
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