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Update // Flywheel Design
We have chosen to go forward with prototyping and building a flywheel based ping pong ball shooter. Below is how we came to this decision.
| 1=:( 3=:) | Cost(Can Veto) | Range | Precision | Breaking | Jamming | Reload Time | Production Time | Design TIme | Testing Time | Integration /w Software | Scaleibility | Total Score |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Importance/Weight | 1 | 2 | 2 | 3 | 3 | 1 | 3 | 3 | 3 | 1 | 2 | |
| Crossbow | 3 | 3 | 3 | 2 | 1 | 1 | 2 | 3 | 2 | 3 | 3 | 55 |
| Flywheel | 3 | 2 | 3 | 2 | 3 | 3 | 2 | 3 | 3 | 3 | 2 | 62 |
| Pneumatic Cylinder | 3 | 1 | 3 | 3 | 2 | 2 | 3 | 2 | 2 | 3 | 1 | 54 |
| Direct Air | 3 | 1 | 3 | 3 | 3 | 1 | 2 | 2 | 2 | 3 | 1 | 53 |
Last year in FIRST Stronghold we spent a lot of time designing and prototyping our robot. Practicing prototyping will greatly help prepare us for the coming competition.
In the last 5 years 4 of the FRC competitions involved projectiles. By designing a ping pong ball launcher, we will be able to practice designing, prototyping, and testing, as well as possibly create systems that can be almost directly transferred to our Steamworks robot
- Accuracy // targets are often not much larger than the projectiles.
- Distance // often need to fire 10 - 50 ft.
- Amiability // in some competition fields it may hard to have the robot fire from a consistent location
- How to reload // see FRC 2013 -- Ultimate Ascent in video below
- Recharge time // see FRC 2013 -- Ultimate Ascent in video below
- https://www.youtube.com/watch?v=DOMH4TDYwG4 // Flywheel
- https://www.youtube.com/watch?v=rrAKZWfhzrE // high accuracy using elastic potential energy
- http://www.popsci.com/build-300-mph-pingpong-cannon // cool site
- https://www.youtube.com/watch?v=OBsqhKnBvx0 // cross bow // THIS IS WHAT I WAS TALKING ABOUT
Concretely defining what materials we will use for each of these designs. Start building prototypes, and test them based on the above considerations.