The Chester Challenge 2006
 

Well I heard your comments and talked to the team and I am p-leased to announce team 25's Chester Challenge for 2006. In honor of Mr. John Chester , a team parent and adult member engineer, we will offer a trophy tiki to the first ALLIANCE to complete the following task. To claim the prize we need confirmation from an official at the event that this task was indeed accomplished in an official FIRST competition seeding or elimination round and please include the exact time of it.

I am eager to see who steps up to the challenge. The TIKI is still waiting from last season, I'll even dust it off for you.

Now get to it!!


WC :cool:

Re: The Chester Challenge 2006
 

I don't think it going to work, especially if you have all the robot shooting at once from the same position. You get at least 8-10, maybe 15 but not all 30 balls in.

Re: The Chester Challenge 2006
 

Wayne, Are you saying they cant move before shooting?

Re: The Chester Challenge 2006
 

He asks, of course, because it's not really possible to do that, due to rules and air resistance.

Re: The Chester Challenge 2006
 

Impossible? Explain..... what rules say you cant shoot from the start position?

This is far more possible than scoring the viso n tetra on the center goal in 15 seconds.....

Re: The Chester Challenge 2006
 

No rule prohibits it, but I haven't been hearing any rumblings on Delphi about anyone being able to hit balls from half-court (where 1.5 of the robots would start).

Re: The Chester Challenge 2006
 

OK - much as I hate to give in to nay-sayers-

I'll alter the challenge-

the first Allliance that scores 90 ball-points (sans bonus) in the autonomous mode from ANYWHERE on the field and in an official FIRST seeding or elimination round will win the TIKI.


So--I made it easy for you- can you do that? :rolleyes:


I think its too easy but .....

WC :cool:

Re: The Chester Challenge 2006
 

Not yet anyways... The teams we end up having to watch out for always keep quiet until week 6, or later.

Re: The Chester Challenge 2006
 

The rule he's referring to is the 12 m/s ball speed limit. I haven't calculated it, but it may, in fact, be impossible (due to air resistance) to hit the center goal from the farthest starting box without breaking that rule.

Re: The Chester Challenge 2006
 

Allthough there are no rules that prohibit tha, we have been able to shhot balls from half court. :D

Re: The Chester Challenge 2006
 

I looked up the field drawings and did a quick check

the center starting position box is 27' along the long side of the field to the end, and 13' from the center. Knocking off a few feet to the middle of the box, its 11'.

(27^2 + 11^2) ^ 0.5 = 29 feet to the bottom of the goal at floor height.

The example FIRST gave for the 12M/S ball speed limit says the ball will travel 35 feet if fired at max speed with a 30° angle. Thats 35 feet to where it hits the floor.

So its looking like you would have to exceed the muzzle velocity limit to swish balls through the goal from the center starting postion, or the one further away.

One other factor: the way the bots are all lined up along one side, will the two farthest bots be able to shoot towards the center goal without hitting the next bot in the back of the head?

Re: The Chester Challenge 2006
 

i think the hardest part of this challenge will be that the balls would have to be timed so that they do not hit each other in mid air wich would cause them to bounce off each other and not go in.

Re: The Chester Challenge 2006
 

if you do that math on this part of it, lets say you fire at 12M/s and you fire all 10 in 5 seconds.

that means each ball is flying at 1/2 S intervals, which will put them 6 meters apart

thats a lot of space between the balls in flight: 10" balls with 226" of empty space between them

the odds of two balls hitting in flight is 10/226 = about 5 out of 100.

The odds are 20:1 in your favor (no collisions in midair)

I need some help
 

ya this has nothing to do with the subject but I need help trying to post or what ever it is that you have to do to put a question on the website... thanks

Re: The Chester Challenge 2006
 

I would be most worried about the goal being able to keep up. Assume that it takes a two seconds to stop a ball and clear it, out of the box, into the chute. Say also, for simplicity sake, that three balls are capable of doing this at the same time. So say you have, best case scenario, 30 balls in ten seconds.

So, you have ten, 3 balls instances of clearing. At two seconds apart. So, to clear all the balls, it would be 10*2 =20 seconds to clear all the balls completely. So, by the end of the ten seconds, there would be ten seconds of balls to clear, backed up. (10/2)*3 balls~15 balls left

So at the end of the period (through my rough estimation), there are fifteen balls to clear, or, towards the end of the autonomous period, there are 10 or 12 to get in the way.

I wonder if 10 or 12 balls, some still jangling around, could present enough of an obstacle to prevent some incoming balls from coming in? And what about the feeder chute? I wonder if that'll jam? I think, on top of needing a killer alliance to do it, this challenge is going to be harder than the intro suggests...