## Search found 840 matches

May 5th, 2014, 6:46 pm
Forum: 2014 Invitationals, Regionals, and States
Topic: Pennsylvania 2014
Replies: 349
Views: 63910

### Re: Pennsylvania 2014

I would like to hope there was a miscalculation. But what has happened is pretty big. From what I hear, many of the schools who were in the Top 5/6 at states for the C Division are very disappointed in what is going on. Many coaches have been trying to contact the State admins trying to get clarifi...
February 25th, 2014, 3:48 pm
Forum: 2014 Lab Events
Topic: Technical Problem Solving C
Replies: 29
Views: 12227

### Re: Technical Problem Solving C

Exactly! I was looking for something about countercurrent heat exchangers, or really anything besides concurrent flow.
February 23rd, 2014, 11:34 am
Forum: 2014 Lab Events
Topic: Technical Problem Solving C
Replies: 29
Views: 12227

### Re: Technical Problem Solving C

Here's an interesting question that zero out of 20 teams got completely correct at CWRU yesterday: For a general heat exchanger, consider the inlet temperature of chamber A to be T1A, the outlet temperature of chamber A to be T2A, the inlet temperature of chamber B to be T1B, and the outlet temperat...
May 20th, 2013, 10:02 am
Forum: 2013 Lab Events
Topic: Shock Value B/Circuit Lab C
Replies: 214
Views: 42390

### Re: Shock Value B/Circuit Lab C

Hey, I showed up at 2:59. So really I was early!
May 19th, 2013, 5:52 pm
Forum: 2013 Lab Events
Topic: Keep the Heat B/Thermodynamics C
Replies: 494
Views: 77764

### Re: Keep the Heat B/Thermodynamics C

You're right, it is similar to a half-life. This is covered by Newton's law of cooling, which states that the rate of heat loss of a body is proportional to the difference in temperatures between the body and its surroundings, according to wikipedia. So if the rate of change in temperature is propor...
May 22nd, 2012, 4:59 pm
Forum: 2012 Nationals
Topic: 2012 National Tournament: University of Central Florida
Replies: 313
Views: 51628

### Re: 2012 National Tournament: University of Central Florida

For everyone who was as amazed (to say the least) at the opening cerimonies, here are the three videos:
http://www.youtube.com/watch?v=DZGINaRUEkU
http://www.youtube.com/watch?v=akek6cFRZfY
http://www.youtube.com/watch?v=7NNhj9CioTE
March 2nd, 2012, 7:13 pm
Forum: 2012 Build Events
Topic: Robot Arm C
Replies: 531
Views: 77508

### Re: Robot Arm C

Sounds like an interesting discussion, and it reminded me of something. When I was in 6th grade and Borders was still around, I bought a book called "Junkbots, Bugbots, and Bots on Wheels." I still recommend that book to anyone who wants to learn about building robots as a hobby. One of th...
March 2nd, 2012, 2:41 am
Forum: 2012 Build Events
Topic: Robot Arm C
Replies: 531
Views: 77508

### Re: Robot Arm C

That reminds me. I used to recommend lithium polymer batteries, because they're getting cheaper and can supply enough current for almost anything. I don't recommend them anymore, if you're the kinda person who makes stupid mistakes like me. Because sometimes you forget to balance them. And then some...
January 30th, 2012, 4:59 pm
Forum: 2012 Build Events
Topic: Robot Arm C
Replies: 531
Views: 77508

### Re: Robot Arm C

Oh, that's pretty cool! But still, I see you point to speed as the advantage. My teammates haven't had a chance to practice with a real field compliant with the rules, but my my judgement, it shouldn't be a problem to make 3 minutes. I guess that depends on your controller, and practice.
January 30th, 2012, 4:26 pm
Forum: 2012 Build Events
Topic: Robot Arm C
Replies: 531
Views: 77508

### Re: Robot Arm C

I think the better question to ask here is WHY make it autonomous, not why not. A team that gets maximum score with an autonomous 4-motor robot will not beat one that gets maximum score with 4 motors that's manually controlled. Time is not scored. It will come down to the quality of technical docume...