
02-02-2009, 12:47
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Registered User
 FRC #2526
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Join Date: Jan 2009
Location: Maple Grove, MN
Posts: 61
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Re: For those who are skeptical about propellers - Team 2526
Quote:
Originally Posted by Bongle
It won't be spontaneous, it'll be in response to a large object passing through your porous safety cage and into the props. Maybe an orbit ball will come apart above your bot and the plastic shards will fall on your bot. Maybe another team's robot will shed bolts, or maybe a human player will accidentily toss their watch. Maybe a wire will break or come loose and will get ingested. Maybe a robot will fall on your cage and bend it inwards, hitting the prop.
Also keep in mind that every time your robot hits a wall or another robot at speed, your props will endure forces well beyond what a normal R/C plane ever encounters. An impact with the wall may decelerate a bot at 10gs, which means your fast-spinning props have to deal with that deceleration and not vibrate themselves to death. An R/C plane never sees accelerations like that.
If you don't want to change your design on safety grounds, not believing that it is a risk, change it based on pragmatic grounds: despite any "no that won't happen" arguments from your team, inspectors will mostly likely not permit your robot to compete. So even if you don't personally believe it is a safety risk, it seems that pragmatism would compel you to make a better safety cage.
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I've already mentioned that we'd construct a better cage. I'll get pics of it up as soon as possible just to stop all these continual scoldings. XD
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