Rotor Egg Drop B

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sofan
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Re: Rotor Egg Drop B

Post by sofan » April 30th, 2013, 6:36 pm

sr243 wrote:
sofan wrote:
MagicalMurder wrote:I do believe that air vents would have contributed towards that or.... 100 trials? I usually do like 3-5 then have a brand new one for the competition... For example, we had a good design, and we did 5 tests, then build a brand spanking new one to use for our states...
I do around 10 because there is always a error in timing due to the imperfection of humans.
I don't think 100 trials is the problem as long as the 100th is very close to the time of first 10 trials (which it may not have been). There is just no point to doing so many trials. Honestly the difference in accuracy between the average of 5 or 10 is very small (less than .1s) as long as they are valid trials. However, vents could be a big deal especially if it messes up how it spins. That would also make sense because I doubt you can win PA states with 6s for 15m otherwise.
It most likely could have been that something had broke during the last few trials.(they dont last forever!)I am no from PA so i have no idea how the competition is there.
New school year! New scioly season! Another year to do something great!

2013 galveston regionals:
rotor: 3rd
pic: 2nd(Texas event)
overall:3rd
2013 state:
rotor:4th
overall: 12th :I

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Re: Rotor Egg Drop B

Post by ckssv07 » April 30th, 2013, 7:37 pm

Maybe 100 was a bit over but id still say at least 80 because we tested ~7 times every other day after we finished just to make sure nothing broke because somebody could've knocked it over. And we checked right before we impounded.

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Re: Rotor Egg Drop B

Post by sofan » May 1st, 2013, 5:06 am

ckssv07 wrote:Maybe 100 was a bit over but id still say at least 80 because we tested ~7 times every other day after we finished just to make sure nothing broke because somebody could've knocked it over. And we checked right before we impounded.
ok, then my second thought ask (the people that dropped it for you) about the air vents.
New school year! New scioly season! Another year to do something great!

2013 galveston regionals:
rotor: 3rd
pic: 2nd(Texas event)
overall:3rd
2013 state:
rotor:4th
overall: 12th :I

ckssv07
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Re: Rotor Egg Drop B

Post by ckssv07 » May 1st, 2013, 6:42 am

sofan wrote:
ckssv07 wrote:Maybe 100 was a bit over but id still say at least 80 because we tested ~7 times every other day after we finished just to make sure nothing broke because somebody could've knocked it over. And we checked right before we impounded.
ok, then my second thought ask (the people that dropped it for you) about the air vents.
He said it assumed its normal path and didnt even know there were air vents.

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Re: Rotor Egg Drop B

Post by Beastybob12345 » May 3rd, 2013, 9:33 pm

Um, guys? Any of you tried nylon wire or balsa wood? If so, which is better for the blades?
I am currently using balsa wood frames for my blades.
[img]https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcTcJRzoptYVlOdlPSHbLzFc37EVfbeQWvdCIdwEGVnkZvhxLbKBqA[/img]
Me----> Image

NorCal Science Olympiad is AWESOME!!!

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Re: Rotor Egg Drop B

Post by Toms_42 » May 4th, 2013, 5:42 am

ckssv07 wrote:
sofan wrote:
ckssv07 wrote:Maybe 100 was a bit over but id still say at least 80 because we tested ~7 times every other day after we finished just to make sure nothing broke because somebody could've knocked it over. And we checked right before we impounded.
ok, then my second thought ask (the people that dropped it for you) about the air vents.
He said it assumed its normal path and didnt even know there were air vents.
I dropped it, and air vents may have been there, I couldn't tell. It did show signs of gettin hit by air at one point, (a bad, quick wobble that quickly stablized) and some other teams all drifted the same direction. Other than that it looked normal. Slow and steady falling, it didnt speed up, but at the same time it looked more like 10 meters than 15.

Also it got nearly the same time exactly as what we get when testing with a 9.6 meter drop.
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Re: Rotor Egg Drop B

Post by ckssv07 » May 4th, 2013, 2:36 pm

Toms_42 wrote: I dropped it, and air vents may have been there, I couldn't tell. It did show signs of gettin hit by air at one point, (a bad, quick wobble that quickly stablized) and some other teams all drifted the same direction. Other than that it looked normal. Slow and steady falling, it didnt speed up, but at the same time it looked more like 10 meters than 15.

Also it got nearly the same time exactly as what we get when testing with a 9.6 meter drop.
It was 8.6m.

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Re: Rotor Egg Drop B

Post by sofan » May 8th, 2013, 5:11 pm

it may have effected it. you never know.
New school year! New scioly season! Another year to do something great!

2013 galveston regionals:
rotor: 3rd
pic: 2nd(Texas event)
overall:3rd
2013 state:
rotor:4th
overall: 12th :I

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Re: Rotor Egg Drop B

Post by ckssv07 » May 12th, 2013, 7:59 am

What have the times been for yhe people going to nationals.

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Re: Rotor Egg Drop B

Post by sofan » May 12th, 2013, 3:27 pm

for texas riverwood got first in rotor and second overall. 3.12
New school year! New scioly season! Another year to do something great!

2013 galveston regionals:
rotor: 3rd
pic: 2nd(Texas event)
overall:3rd
2013 state:
rotor:4th
overall: 12th :I

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