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Unread 14-03-2012, 08:05
Cal578 Cal578 is offline
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AKA: Gerry
FRC #0578 (Red Raider Robotics)
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Join Date: Jan 2012
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Location: Rochester, NY
Posts: 256
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Re: Flywheels and Shooter Wheels

Quote:
Originally Posted by Tom Line View Post
Once you have fired a ball, a given amount of energy is transferred from the flywheel to the ball. Regardless of whether your shooter slows down a little (heavy shooter) or a lot (light shooter), you'll need to use your motors to add that same amount of energy back into the system. The same amount of energy is removed from both systems, so the motors will have to work just as much in either case to add it back in.
I think a shooter with a flywheel can transfer a little more energy than without a flywheel. I am assuming that the rate of energy transfer is proportional to the difference between wheel speed and ball speed. Imagine two identical shooters A and B, except that shooter B has a flywheel. Shooter A will slow down during the launch process, so it will be adding less energy near the end of the launch. Shooter B will maintain its speed (nearly), so it continues adding energy to the ball at a higher rate than A.

What I don't know is, does the flywheel help the launcher behave more consistently with balls of different stiffness? "Consistent" meaning balls exiting the launcher at the same speed, regardless of stiffness.
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R3: Red Raider Robotics (FRC Team 578)
Fairport, NY, USA
www.FairportRobotics.org
2016 Finger Lakes Regional: Semifinalist on Alliance 7 (1128, 2010, 578)
2016 NYC Regional: Finalist on Alliance 3 (3419, 578, 3017), 4th seed team, Team Spirit Award
2015 Finger Lakes Regional: 8-3-0 in qualification, 7th seed, Quarterfinalist
2014 NY Tech Valley Regional: 8-4-0 in qualification, 13th seed, Semifinalist
2013 Finger Lakes Regional: 4-5-0 in qualification, 26th seed, Alliance 6, 1-2 in tournament
2012 Buckeye Regional: Gracious Professionalism Award, 7-3-0, 14th seed
2011 Finger Lakes Regional: Engineering Inspiration Award

Last edited by Cal578 : 14-03-2012 at 08:07. Reason: clarified some wording