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Fri, 22 Jan 2021 17:55:16 -0500
last edited: Fri, 29 Jan 2021 15:01:31 -0500
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Jason Cook
jason@hub.inktada.com
Ordered a 56 inch ( 4' 8" )
mini
rail for the Panda.
Velocity off rail estimated at 69 ft/sec. I'll be 3D printing my own rail buttons.
#^
20-2020
20mm X 20mm T-Slotted Profile - Four Open T-Slots
high powered rocketry
1
Freddy WILLEMS
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7 comments
Fri, 22 Jan 2021 18:20:40 -0500
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Marshall Sutherland
dwatney@hub.farthinghalearms.com
This is the guide rail for launching?
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Fri, 22 Jan 2021 18:34:36 -0500
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Jason Cook
jason@hub.inktada.com
Yeah, this is the smallest I have used, but it is because this rocket has such a fast takeoff speed.
Here's a good picture of a bigger rail, from a launch on 2014-11-07. It's the best picture of the setup I could find.
(photo by Andrea Lu Jordan-Donohue)
Your rocket is held to the rail in the one of the grooves via rail buttons that are bolted to the airframe.
(photo from mach 1 rocketry)
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Fri, 22 Jan 2021 18:40:07 -0500
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Marshall Sutherland
dwatney@hub.farthinghalearms.com
And all this time, I just thought there were just rings going around a simple round pole. I can see how those would add too much drag, though.
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Fri, 22 Jan 2021 18:46:25 -0500
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Jason Cook
jason@hub.inktada.com
Correct it does add drag, but also the rigidity of the round pole becomes a huge issue as you get larger. With the T slotted frame, you can really add some strength to the support of your rocket. Larger heavier rockets (or taller rails) actually have an tri-frame girder with the rail adding more load bearing capability and rigidity.
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Fri, 22 Jan 2021 18:48:50 -0500
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Marshall Sutherland
dwatney@hub.farthinghalearms.com
Interesting
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Sat, 23 Jan 2021 21:22:30 -0500
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Freddy WILLEMS
frewi80@hub.inktada.com
Is that smaller tan a 10/10 ??
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Sat, 23 Jan 2021 21:51:49 -0500
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Jason Cook
jason@hub.inktada.com
Yes, 1010 is around 1 inch. This is 0.78 inch.
1
Freddy WILLEMS
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