Balloon Task

Jim_R
Admin Emeritus
Admin Emeritus
Posts: 283
Joined: May 13th, 2001, 4:22 pm
Division: Grad
Location: Pittsburgh, Pa
Contact:

Balloon Task

Postby Jim_R » September 3rd, 2010, 1:16 pm

Discussion for Balloon task.
-The path of the Administrator is beset on all sides by the inequities of the selfish and the tyranny of evil men.

-Nothing\'s gonna get deleted. We\'re gonna be like three little Fonzies here. And what\'s Fonzie like? Come on, what\'s Fonzie like?
-Cool?
-Correctamundo. And that\'s what we\'re gonna be. We\'re gonna be cool. Now, I\'m gonna count to three, and when I count three, you let go of your mouse, and back away from the keyboard. But when you do it, you do it cool. Ready? One... two... three.

questionguy
Member
Member
Posts: 126
Joined: November 23rd, 2010, 4:29 pm
Division: C
State: VA

Re: Balloon Task

Postby questionguy » December 5th, 2010, 7:48 am

Is there a set size the balloon has to be?

User avatar
Primate
Member
Member
Posts: 409
Joined: January 15th, 2009, 4:34 pm
Division: C
State: NY

Re: Balloon Task

Postby Primate » December 5th, 2010, 9:05 am

Is there a set size the balloon has to be?
As long as it's easily recognizable as a balloon, you're fine.
events 2012 gravity vehicle, robot arm, thermodynamics, tps

old
Member
Member
Posts: 56
Joined: February 6th, 2010, 4:48 pm
Division: C
State: CA

Re: Balloon Task

Postby old » January 24th, 2011, 8:41 pm

The rules say that the balloon must rise only due to it's buoyancy but it never states what environmental conditions you must contend with. In the old balloon race event there were numerous cases where air currents in the room caused balloons that were actually buoyant to either simply fail to rise or, in some cases, to rise and then reverse direction and eventually settle back to the ground. Anyone have any idea what will happen if the A/C turns on while this event is going on and someone's balloon gets blown in such a way that it doesn't rise even though it is clearly buoyant?

Uncle Fester
Member
Member
Posts: 149
Joined: May 14th, 2001, 4:59 pm
Division: Grad
State: IN
Location: Michigan, SO in Indiana

Re: Balloon Task

Postby Uncle Fester » January 30th, 2011, 12:11 pm

This was covered in another post. Balloon Race is not Mission Possible; Good Engineering (a whole lot of reasons here) means you won't have a barely-lifting balloon, risking 250+ points, just to add 5g and 50 points in an iffy situation.

In the tournaments I've run, he quick-release, fast-rising balloons with small signs on micro weight string work. I've even seen someone WD40'ing the string (careful, it dissolves latex). Heavy signs on party ribbon that create a slow-moving balloon situation end up getting hung up on even tiny amounts of friction and wander.

Bad design is hardly the fault of the rule writers. Or the AC. And last I checked, it's January. The dash from the equipment truck to teh school entrance in 10 degree weather is a far bigger problem.
Uncle Fester, Maker & Fiction Science Writer

The Misadventures of the Electric Detention
The Revenge of the Electric Detention
The Curse of the Electric Detention
>> Three full-length adventures, 26 short stories and counting!

User avatar
Primate
Member
Member
Posts: 409
Joined: January 15th, 2009, 4:34 pm
Division: C
State: NY

Re: Balloon Task

Postby Primate » February 8th, 2011, 11:19 am

Does anyone have a reliable method of releasing the balloon? For regionals, we set our sand timer up to pour onto the raised side of the lever, and wedged the balloon beneath the other end. Of course, the lever wasn't in the right spot, so we had to run the string through the device and it kept getting stuck due to friction.

I'm thinking a mousetrap might do the trick.
events 2012 gravity vehicle, robot arm, thermodynamics, tps

questionguy
Member
Member
Posts: 126
Joined: November 23rd, 2010, 4:29 pm
Division: C
State: VA

Re: Balloon Task

Postby questionguy » February 8th, 2011, 1:13 pm

Does anyone have a reliable method of releasing the balloon? For regionals, we set our sand timer up to pour onto the raised side of the lever, and wedged the balloon beneath the other end. Of course, the lever wasn't in the right spot, so we had to run the string through the device and it kept getting stuck due to friction.

I'm thinking a mousetrap might do the trick.
Mousetrap that lifts a mass sitting on the string of the balloon works perfectly

User avatar
Primate
Member
Member
Posts: 409
Joined: January 15th, 2009, 4:34 pm
Division: C
State: NY

Re: Balloon Task

Postby Primate » February 8th, 2011, 7:30 pm

Does anyone have a reliable method of releasing the balloon? For regionals, we set our sand timer up to pour onto the raised side of the lever, and wedged the balloon beneath the other end. Of course, the lever wasn't in the right spot, so we had to run the string through the device and it kept getting stuck due to friction.

I'm thinking a mousetrap might do the trick.
Mousetrap that lifts a mass sitting on the string of the balloon works perfectly
Apparently, you can even wedge the string between the two pieces of metal when the trap is set--then all you have to do is spring the trap. :)
events 2012 gravity vehicle, robot arm, thermodynamics, tps

questionguy
Member
Member
Posts: 126
Joined: November 23rd, 2010, 4:29 pm
Division: C
State: VA

Re: Balloon Task

Postby questionguy » February 9th, 2011, 5:12 pm

Does anyone have a reliable method of releasing the balloon? For regionals, we set our sand timer up to pour onto the raised side of the lever, and wedged the balloon beneath the other end. Of course, the lever wasn't in the right spot, so we had to run the string through the device and it kept getting stuck due to friction.

I'm thinking a mousetrap might do the trick.
Mousetrap that lifts a mass sitting on the string of the balloon works perfectly
Apparently, you can even wedge the string between the two pieces of metal when the trap is set--then all you have to do is spring the trap. :)
Would that still count as having the sign touch the bottom of the device?

JTMess
Member
Member
Posts: 104
Joined: January 14th, 2011, 6:45 am
Division: Grad
State: NY

Re: Balloon Task

Postby JTMess » February 9th, 2011, 6:28 pm

You would wedge the string between the parts of the mousetrap and leave plenty of slack in the string so the sign can sit on the bottom of the device on one side of the mousetrap.
2014 States: Scrambler-2nd, Mission Possible-2nd, Experimental Design-3rd, Circuit Lab-3rd
2014 Regionals: Scrambler-1st, Mission-1st, Technical Problem Solving-1st, Circuit Lab-1st, Maglev-1st, Bungee Drop-1st
2013 States: Gravity Vehicle-1st, Fermi-8th, Maglev-1st


Return to “Mission Possible C”

Who is online

Users browsing this forum: No registered users and 1 guest