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  #41  
Old 05-01-2012, 07:43 AM
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Originally Posted by Neptune View Post
Definately! I'm going to strengthen the shell to allow it to hold up to the thrust pressure and turbulence.
This is going to be so cool...
Have you tested the stability yet?
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  #42  
Old 05-01-2012, 07:49 AM
Neptune Neptune is offline
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This is going to be so cool...
Have you tested the stability yet?
No. I haven't tested anything yet, I'm working the original build first and researching basic model rocketry techniques. I'm looking for the perfect ratio of fin length, number of fins etc in relation to size of the fuselage, diameter of said fuselage, weight and mass, as well as balance... and so on. It seems to me that the most stable ships have four fins and there is a direct correlation in the thickness and length as well as the shape when it comes to inflight stability... Sorry, I had to put my engineers hats back on and I'm a little rusty.
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  #43  
Old 05-01-2012, 08:37 AM
jleslie48 jleslie48 is offline
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I designed this one as a flyer a few years ago, never published, but built as a flyer. On its one launch, the straw tubes that were glued to the body as the wire guide ripped off and the rocket did about 4000 circles on the ground. Note the metal washers at the top to move the center of gravity forward. Parachute popped nice though!

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  #44  
Old 05-01-2012, 08:39 AM
jleslie48 jleslie48 is offline
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"The Rocket Formerly Known as Black"

TRFKAB
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  #45  
Old 05-01-2012, 08:41 AM
Neptune Neptune is offline
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I designed this one as a flyer a few years ago, never published, but built as a flyer. On its one launch, the straw tubes that were glued to the body as the wire guide ripped off and the rocket did about 4000 circles on the ground. Note the metal washers at the top to move the center of gravity forward. Parachute popped nice though!


Wow! I think that makes for an obvious example of how something looks cool in theory and makes for a nifty ship in Sci-Fi, but in reality is not workable.

Did you make any changes and try to compensate for the flight results and try again? I see that you used balsa wood for the stabalizer fins...
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  #46  
Old 05-01-2012, 09:09 AM
spaceagent-9 spaceagent-9 is offline
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i love that!
its completely retro!
astro!
it does need the holes in the fins and the indentation under the hole though.
that is just too cool!
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  #47  
Old 05-01-2012, 09:12 AM
jleslie48 jleslie48 is offline
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Originally Posted by Neptune View Post
Wow! I think that makes for an obvious example of how something looks cool in theory and makes for a nifty ship in Sci-Fi, but in reality is not workable.

Did you make any changes and try to compensate for the flight results and try again? I see that you used balsa wood for the stabalizer fins...
not balsa, just corregated cardboard layered with a of paper to seal the end. I'm still not sure if it is unstable, I have to drill through the body for the launch tube and try again so it has at least a chance of getting off the ground.
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  #48  
Old 05-01-2012, 09:15 AM
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Quote:
Originally Posted by Neptune View Post
Wow! I think that makes for an obvious example of how something looks cool in theory and makes for a nifty ship in Sci-Fi, but in reality is not workable.

Did you make any changes and try to compensate for the flight results and try again? I see that you used balsa wood for the stabalizer fins...
Oh, it is workable alright...
Team Vatsaas produces the coolest flying retro rockets.

Rocket Team Vatsaas TRFKAB Index
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  #49  
Old 05-01-2012, 09:16 AM
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Quote:
Originally Posted by jleslie48 View Post
I designed this one as a flyer a few years ago, never published, but built as a flyer. On its one launch, the straw tubes that were glued to the body as the wire guide ripped off and the rocket did about 4000 circles on the ground. Note the metal washers at the top to move the center of gravity forward. Parachute popped nice though!

Please tell us you are going to publish this model......
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  #50  
Old 05-01-2012, 09:26 AM
jleslie48 jleslie48 is offline
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Originally Posted by Pem Tech View Post
Please tell us you are going to publish this model......

My holdback on publishing it is I haven't figured out how to paint it. I don't have it as a 3d model but just flat conic sections. I have the skills now to make a 3ds version of it now, but I can't go the other way, I don't know how to flatten when its a 3d model...
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