PPP: Pneumatic Precalc Project

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
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drac
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Mon Oct 02, 2006 8:55 pm

PPP
Pneumatic Precalc Project

<img src="http://img.mypicgallery.com/precalcproj ... ct-002.jpg">

<a href="http://img.mypicgallery.com/precalcproj ... ">Overview of the pilot</a>
<a href="http://img.mypicgallery.com/precalcproj ... g">Filling System Overview</a>

So our PreCalculus teacher decided us to give us a project on linear regressions the other day and told us that we could use any data that we wanted. So after a little bit of thinking, I figured it out. Why not compare the linear correlation of predicted and actual velocities at certain temperatures. With a little bit of GGDT work, this project should go off without a hitch.

As to the dimensions, I'm not exactely sure... i'm guessing the chamber is around 18 inches of 2 inch pipe, and the barrel is around 30 inches of 1 inch pipe, for about a 1:1.3 ratio.

The filling system is simply a regulator hooked up to a quick connects, with the rear port connected to the chamber and the side port plugged. It should give me quick consistant measuring. And yes, I do realize that I need to make a barrel support for it. That'll most likely get done when Precalc, Physics and AP HIstory and AP English stop owning my life.

AS soon as I get my GGDT specs up here with a C Cell battery as ammo, I'll post up predicted velocities up here. And besides, even if the project is a failure, i'll get big points for originality. :P
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mark.f
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Mon Oct 02, 2006 9:07 pm

I want to see the teacher's face when you turn in <I>that</I> paper!
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