Bottle Rocket B

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Primate
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Re: Bottle Rocket B

Post by Primate » March 15th, 2011, 4:55 pm

This event is awful up north. It finally stopped snowing, and now the ground is so muddy my bottles get covered in gunk and mud whenever I launch.

I just cannot get this backslider to work properly. Does a rocket made entirely out of 2L bottles (ie, no paper cone and just adjusted CP/CG/CLA) stand a chance against a coney?
events 2012 gravity vehicle, robot arm, thermodynamics, tps

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Re: Bottle Rocket B

Post by Littleboy » March 15th, 2011, 4:59 pm

No we tried those but the are heavier and come down to fast (even on their sides). We have gotten 11 seconds with all 2 liter rocket. 15 with tube. and 25 with coney (that is now gone)

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Re: Bottle Rocket B

Post by Ham_008 » March 15th, 2011, 6:46 pm

Alright, so I launched again today and it was interesting...

My rocket had a sweet backslide, but it only began doing so less than halfway down (when the rocket was going down). I was wondering what could I do to make it backslide immediately rather than halfway down. I got 10 seconds and it seems like it'd be around 20 if it backslid the whole way...

Any pieces of advice?
Events for 2011:

Bottle Rockets
Towers
Shock Value
Awesome Aquifers
Write it Do it

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Re: Bottle Rocket B

Post by Primate » March 15th, 2011, 7:25 pm

Littleboy wrote:No we tried those but the are heavier and come down to fast (even on their sides). We have gotten 11 seconds with all 2 liter rocket. 15 with tube. and 25 with coney (that is now gone)
Thought so; I won't bother with it then. Is your "tube" just a coney with a cylinder instead of the cone?
events 2012 gravity vehicle, robot arm, thermodynamics, tps

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Re: Bottle Rocket B

Post by Littleboy » March 17th, 2011, 3:18 pm

Any predictions for times in Michigan regionals in a fairly competitive region?

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Re: Bottle Rocket B

Post by Ham_008 » March 17th, 2011, 6:39 pm

my tube is a wrapping paper roll with other ways of aerodynamics as well in between it and the bottle itself.

what should i do to change/improve it
Events for 2011:

Bottle Rockets
Towers
Shock Value
Awesome Aquifers
Write it Do it

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Re: Bottle Rocket B

Post by fishman100 » March 18th, 2011, 6:14 pm

Platypus wrote:My highest time is 17 seconds with a backslider. Is this good enough to win/or get close to winning states?
This will be fun watching all the rcokets at Sates :)
I'll be your competition :shock: \

A week ago, while it was pouring rain (and my partner ended up sick), we launched and got 22.47 seconds.
While not in the rain, our highest time was 25.12 seconds :D
Langley HS Science Olympiad '15

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Re: Bottle Rocket B

Post by Primate » March 19th, 2011, 11:26 pm

Winning time for the NY state competition (division c trial event) was 21.5 seconds.
events 2012 gravity vehicle, robot arm, thermodynamics, tps

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Re: Bottle Rocket B

Post by Cheesy Pie » March 19th, 2011, 11:29 pm

I don't know our times yet. But one fell apart and one landed on the school.
100% of deaths are somehow caused by science.
Don't be a statistic.
Don't do science.

Naperville Central High School '17 :arrow: Michigan State University Physics '21
GO GREEN GO WHITE

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Re: Bottle Rocket B

Post by Littleboy » March 20th, 2011, 7:02 am

Our times were both between 21.35-21.66. They almost went on the roof.

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