Controlling helium balloon attitude

  • Context: Undergrad 
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    Balloon Helium
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Discussion Overview

The discussion centers on the feasibility of controlling the attitude of helium balloons without resorting to cutting the balloons or dropping weight. Participants explore various methods and mechanisms for attitude adjustment, including the use of tanks, pumps, and valves, as well as the implications of gas dynamics within the system.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions whether it is possible to control balloon attitude without releasing helium or dropping weight, suggesting the need for a remote control mechanism.
  • Another participant proposes using a tank, pump, and valve system to manage helium levels.
  • A follow-up post expresses concern that releasing gas from the tank would be akin to cutting the balloons, as it would reduce the overall buoyancy of the system.
  • There is a suggestion that pumping or releasing air could adjust the system's weight slightly, but it may not be sufficient for effective attitude control.
  • Another participant clarifies that the tank could be used to transfer helium to and from the balloon, allowing for adjustments in volume without losing helium from the system.
  • Concerns are raised about the balloon's expansion due to lower atmospheric pressure at higher altitudes, which could affect the control mechanism.
  • A participant introduces the idea of using a bladder within the main balloon to pump air in or out, potentially aiding in attitude control.

Areas of Agreement / Disagreement

Participants express differing views on the effectiveness of various methods for controlling balloon attitude, with no consensus reached on a definitive solution. The discussion remains unresolved regarding the best approach.

Contextual Notes

Participants highlight limitations related to the dynamics of gas release and the impact of atmospheric pressure on balloon behavior, which may affect the proposed methods for attitude control.

bbd001
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Hi,

Is it possible to control the attitude of helium balloons without cutting the balloons or dropping the weight? (e.g. using a remote control to control "something" to adjust the attitude)

Thanks,
 
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thx for the reply russ.

Can you give me more information?

If I have a tank fill with helium, it is part of the system. Releasing the gas from the tank is like cutting some of the balloons. If I want to move up again, the system cannot get extra helium back from the sky.

If I pump/release air (instead of helium or other material that is lighter than air), it can adjust the over all system weight a little bit, but it should not enough to adjust the attitude. Is that right?

thx
 
bbd001 said:
Can you give me more information? If I have a tank fill with helium, it is part of the system. Releasing the gas from the tank is like cutting some of the balloons.
I'm pretty sure he meant to use the tank to move the higher density helium from the tank into the balloon, and a pump to move the lower density helium in the balloon back into the tank. The balloon would expand or contract depending on how much helium was in the balloon, and the tanks expansion or contraction would not be significant.

You'd have a side issue with the balloon expanding due to lower pressure of the atmoshpere at higher altitudes.
 
You have a bladder in the main balloon that you can pump air in or out off.
 

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