Pneumatic launching device
Pneumatic launching device
(OP)
I'm designing a paintball marker. I've drawn the method of operation but now need to find approx. what size I need to machine the pieces. I have 3 controle variables, approx pressure (~200psi), paintball muzzle velocity (~300fps), and cycles per second (~17). I also need to account for the air used in the operation of the internals, or total air concumption minus the required ammount for propelling the paintball. I'm trying to find formulas to help me piece all of this together. I'm currently working towards college but need to finance it first, this is part of that process.
Thanks for any help, it's much appreciated!
-Siress
Thanks for any help, it's much appreciated!
-Siress





RE: Pneumatic launching device
size the machine pieces? some thoughts . . .
are there any dimensional constraints with the device (i.e. no larger/smaller than ?)?
need to determine forces/stresses in order to determine suitable materials.
gas type (CO2, N2, or air)?
hope this helps and do feel free to provide further information.
good luck!
-pmover
RE: Pneumatic launching device
http://tinypic.com/k3x6q1.gif
My theory is that the air behind the bolt will be forced to push the air in front of the bolt through the system (can't compresse it further as it's the same supply) supplying enough resistance to build the volume behind the bolt with the full pressure before releaseing it. Air in front also acts as a bolt reset. The air behind is controled by an electronic solenoid valve. That should give you the general idea of what I'm working with.
Thanks,
-Siress
RE: Pneumatic launching device
Is the following correct and/or considered in the launchers development?
1. Prior to launch of the projectile,there must be some initial pressure and volume (chamber) between the ball and the orifice.
2. Air is released via the orifice into the chamber which gives the paintball an acceleration to its muzzle velocity.
3. As the projectile accelerates, and prior to its reaching its exit and final muzzle velocity, it must compress some air in that path and also overcome some friction.
4. The inertia of the paintball.
Regards
RE: Pneumatic launching device
-Siress