Balloons

[tig567899]

Originally Posted by cgmv123

"Area" does not have a height limit.

Yeah but it does say

bound by and including the inward-facing
surfaces of the GUARDRAILS

And they're only so tall.

Thanks to everyone who commented. It was just a thought I wanted to put out there.

[EricH]

Just a thought--the refs might not have a problem, but I rather suspect that the inspectors would give you a tough time about the pressurized helium in the balloons. Now you've got a pneumatic system not filled by the compressor...

Not that teams haven't joked about filling frames with helium before, you understand, but it's a joke.

[mman1506]

Originally Posted by EricH

Just a thought--the refs might not have a problem, but I rather suspect that the inspectors would give you a tough time about the pressurized helium in the balloons. Now you've got a pneumatic system not filled by the compressor...

Not that teams haven't joked about filling frames with helium before, you understand, but it's a joke.

Every team using pneumatic wheels also has a pneumatic system not filled by the compressor.

[Chak]

Originally Posted by mman1506

Every team using pneumatic wheels also has a pneumatic system not filled by the compressor.

Not necessarily. We can connect the compressor to the pneumatic wheels, with a regulator in the middle, and fill this "pneumatic system" with the compressor. This would save labor and be a bit more consistent than the bicycle pump we've been using.

Besides, looking through the rules, it seems that a helium balloon would have a hard time meeting the requirements of R75: "All pneumatic items must be COTS pneumatic devices rated by their manufacturers for working pressure of at least 120psi"
So this helium balloon would need to have a working pressure of 120psi.

[GeeTwo]

I don't see any issue with the pneumatics rules, as the air pressure is not doing any works - it's very much like the items under R77 blue box - more similar to an air filled wheel than a pneumatic storage tank. (My opinion; your inspector may rule otherwise.)

If you intentionally detach the balloon, even though it may not be "on the field", it is still a part of your robot. Once it pokes more than 15 inches outside your frame perimeter, you could draw a foul or disablement under G18.

Is there any point to this? If so, you have to decide whether to put it to Q&A so you have a better idea what to expect, or keep the secret and take the risks of foul and disablement at the first event you try it.

Edit: Further on the non-pneumatic argument - many helium balloons these days do not actually have compressed air - the foil mylar type typically have MUCH lower pressure than you could push with your lungs, just a hair over ambient.

[orangemoore]

Originally Posted by mman1506

Every team using pneumatic wheels also has a pneumatic system not filled by the compressor.

However those are specifically excluded from the pneumatic rules.

Originally Posted by R77 Blue Box

The following devices are not considered pneumatic devices and are
not subject to pneumatic rules (though they must satisfy all other rules):
A. a device that creates a vacuum
B. closed-loop COTS pneumatic (gas) shocks
C. air-filled (pneumatic) wheels