Difference between revisions of "DEWBOT VIII Shooter"
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==Prototypes== | ==Prototypes== | ||
+ | <gallery widths=250 heights=250 perrow=3> | ||
+ | Image:DB8_120111_csm-5.jpg|Assembling shooter wheels | ||
+ | Image:DB8_120111_csm-6.jpg|Testing undershot wheel configuration | ||
+ | Image:DB8_120111_csm-7.jpg|Testing overshot wheel configuration | ||
+ | Image:DB8_120111_csm-9.jpg|Prototype mounted on drill press platform | ||
+ | Image:DB8_120112_csm-3.jpg| | ||
+ | Image:DB8_120114_csm-18.jpg| | ||
+ | </gallery> | ||
==Design Details== | ==Design Details== |
Revision as of 20:07, 30 July 2012
1640's Shooter requirements for Rebound Rumble are:
- This is a shooter; not a dumper
- Primarily targeting the top basket
- High scoring reliability (>67%) from Key or closer
- Ability to feed balls to alliance scoring field from the outbounder station
- Backspin to drop into basket and provide dead landing upon feeding
- Fast recycle; one shot per second (minimum)
- Automatic rangefinding & aiming
- Maintain low CoM for bridge balancing & preventing bridge tips
The Shooter system comprises:
- A fixed-geometry overshot wheeled shooter
- A tachometer to determine and thereby enable control of shooter wheel speed
- A camera for aiming
- A Drive Mode specifically for aiming the robot
- A narrow-beam sonor to determine range to back-board
Contents
Key Technical Challenges & Statements
- A high shooter elevation (trajectory) will be needed to score in the top basket
- High trajectory shooters shooting from the Key cannot be easily blocked (regardless of shooter height)
Concepts
- Wheeled shooter was the only serious concept examined (well, there was some catapult testing early)
- An overshot wheeled shooter offers the desired backspin
- To manage mass & cost, it was decided early that a decision to use pivot drive (which was subsequently made) would also become a decision to fix the shooter azimuth relative to the chassis. If we use pivot drive, we will aim the robot; we will not use a turret to aim the shooter.
Prototypes
Design Details
55 deg