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Unread 02-10-2006, 13:26
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Andrew Schuetze Andrew Schuetze is offline
499 Founder / Alamo FTC & FLL AP
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Team Role: Leadership
 
Join Date: Jan 2002
Rookie Year: 2001
Location: San Antonio, Texas
Posts: 689
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Re: Optimizing Air Cannon Range

We performed the test of a manual ball valve today during class. We doubled our range and added to the altitude achieved. The diaphragm based sprinkler valve opens too slowly and limits air flow as suspected. To make this a remote device on the robot we'll use a short throw pneumatic cylinder activated by a festo solenoid. I've got video of the test but no place to upload at the moment that the school filters will allow me access.

Quote:
Originally Posted by Andrew Schuetze
Thinking along the same lines, I traded in a Rainbird valve this evening for a 1 inch ball valve with a three inch lever handle, rotates 90 degrees.

The plan is to test this manually as a comparison to the sprinkler valve and if it yields a better performance, the we will have to build in a festo solenoid activated pneumatic piston to open and close this valve remotely.

Performance is limited by a slow opening valve. We discovered this when we added a second valve to our set up and were testing the timing of the two opening together. We decided the mechanical operation of the pressure diaphram was not going to yeild consistant and tunable results for a simultaneous opening.

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