Egg-O-Naut C

starpug
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Re: Egg-O-Naut

Postby starpug » March 4th, 2009, 8:15 pm

Mine is 3 feet in diameter; but it didn't open on the actual contest. The egg survived, 19 pts with bonus, and we ended up with 13th at our regionals.

Anyone have clues on how to fix this not opening issue before states?
Drag chute...
Get your facts first, then you can distort them as you please. - Mark Twain

jakeherman
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Re: Egg-O-Naut

Postby jakeherman » March 5th, 2009, 7:02 pm

How high are you getting with 60 psi? I am only getting like 70 feet and I don't think that is enough. ALso, has anybody tried multiple parachutes?

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Re: Egg-O-Naut

Postby fleet130 » March 5th, 2009, 7:12 pm

Almost all real parachutes use a small drogue chute to extract the main one from whatever container it's in. These drogue chutes have a coil spring inside to get a positive inflation. Not legal in this event, but it might be possible to use the idea (how much "spring" can there be to the parachute material before it is considered a violation of the rules?)
Information expressed here is solely the opinion of the author. Any similarity to that of the management or any official instrument is purely coincidental! Doing Science Olympiad since 1987!

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Re: Egg-O-Naut

Postby jakeherman » March 5th, 2009, 8:51 pm

Has anyone determined if angled fins are worth it? Is it really that much more stable than straight fins? Also, do you guys think that cutting the trash bag so that its length is equal to diameter? A trash bag is much longer than its diameter. I really shouldn't have put this off until the day before regionals.

canadiann
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Re: Egg-O-Naut

Postby canadiann » March 6th, 2009, 8:03 am

anyone know weather epoxy is legal for gluing to the fuselage. If it is, is there any place that explicitly says it isn't damaging to bottles as proof that it is legal if any judge thinks it is.

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Re: Egg-O-Naut

Postby Balsa Man » March 7th, 2009, 7:37 pm

Be very interested to hear more results from around the country. Out 2 teams ended up with about 38 sec and 37 sec (w/ bonuses included). Both teams got good chute deployment on 1 of their 2 launches; they'd been running 60-ish % in testing.

Len Joeris
Fort Collins, CO
Len Joeris
Fort Collins, CO

andrewwski
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Re: Egg-O-Naut

Postby andrewwski » March 7th, 2009, 7:55 pm

How was your weather? I think wind is somewhat of a factor. Our regionals had a lot of wind which messed with chutes quite a bit.

starpug
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Re: Egg-O-Naut

Postby starpug » March 7th, 2009, 8:22 pm

The parachute I'm making right now is 3 foot diameter if anyone cares.
Get your facts first, then you can distort them as you please. - Mark Twain

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Re: Egg-O-Naut

Postby Balsa Man » March 8th, 2009, 7:12 am

Andrewwski,
Our weather pretty good. Winds were under 5mph; every so often, gusts a bit more, with some times when there was almost no wind. "Bout as good as it gets, actually......

The weather guesser had predicted light snow, which didn't show up until afternoon, when the event was over.

I was really surprised how things fell off from the top; 4th place was 19.6 seconds, and I believe 3rd was around 24.

Len Joeris
Fort Collins, CO
Len Joeris
Fort Collins, CO

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hockeygirl
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Re: Egg-O-Naut

Postby hockeygirl » March 8th, 2009, 8:04 am

in AL it was muggy outside and the air was a little wet. drag shutes did NOT work for almost eveyone. my parachute was 2 ft in diameter and was in my nose cone. worked perfectly. :D
"To be great is to be misunderstood." --unknown


divison b
Placed
2007
  • 3-food science
  • 3-metric mastery
division c
2008
  • 7-food science
2009
  • 4-egg-o-naut


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