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  #1  
Old 04-27-2010, 09:02 PM
CPMcGraw's Avatar
CPMcGraw CPMcGraw is offline
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Location: Mobile, Alabama
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Exclamation New Design -- Gnarly

Simple sport design for 13mm. Qualifies for "Schoolyard Sounder".

Length: 12.30"
Diameter: 0.908" (ST-8)
Fin Span: 3.812"
Weight: 0.65 oz


1/2 A3-4T......222'......Dv 23 FPS......36" x 1/8" rod
A3-4T..........536'......Dv 16 FPS......36" x 1/8" rod


Enjoy!
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  #2  
Old 05-13-2010, 11:26 AM
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CoachJT CoachJT is offline
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Default New Design -- Gnarly

Craig,

Forgive my ignorance, but how does one classify a rocket as a "Sounder", as opposed to a simple "Sport" rocket. Does the body tube length determine the classification? Meaning, a payload tube can be incorporated without affecting the CG too much?
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  #3  
Old 05-13-2010, 01:03 PM
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CPMcGraw CPMcGraw is offline
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Default

Quote:
Originally Posted by CoachJT
Craig,

Forgive my ignorance, but how does one classify a rocket as a "Sounder", as opposed to a simple "Sport" rocket. Does the body tube length determine the classification? Meaning, a payload tube can be incorporated without affecting the CG too much?


All of the "Schoolyard Sounders" use 13mm engines exclusively. The idea was to develop a series of rockets that were flyable in smaller schoolyards without the risk of having them drift away.

The "sounder" part of the name comes from the older nomenclature of "Sounding Rockets".
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  #4  
Old 05-13-2010, 01:55 PM
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CoachJT CoachJT is offline
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Default New Design -- Gnarly

Got it. I understand now. It's clear as mud
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  #5  
Old 12-26-2010, 09:40 PM
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CPMcGraw CPMcGraw is offline
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Default Fin Patterns

One sheet.
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