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How can I calculate the thrust of an underpressure tank of air when the valve is released? If you can, please, explain in detail. Thank you!
Thrust of an underpressure tank of air
- Thread starter Raresss
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- Air Pressure Tank Thrust Thrust force
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- #2
Bystander
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"Underpressure?" Less than ambient?
- #3
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More than the ambient pressure
- #4
sophiecentaur
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Pressure "under" what? Do you mean when it's running out?
- #5
CWatters
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The OP just means the thrust produced by air escaping from a cylinder of compressed air.
Most people in my country understand "under" to mean "due to". As in "The bridge failed under the weight of traffic".
Most people in my country understand "under" to mean "due to". As in "The bridge failed under the weight of traffic".
- #6
CWatters
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If you can measure the mass flow rate and velocity of the air escaping see "net thrust"...
https://en.m.wikipedia.org/wiki/Rocket_engine#Net_thrust
https://en.m.wikipedia.org/wiki/Rocket_engine#Net_thrust
- #7
sophiecentaur
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I can see that now. In English, underpressure and "underweight" (compound words) have different meanings from when the two words are separated by a space; hence my confusion. If this were a German forum, things might be different. . .
- #8
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Can the mass flow rate and the velocity of the exhausted gas be calculated or those can only be measured in an experiment ?
- #9
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Bernoulli should be a good approximation.
If this were a German forum, things might be different. . .
Not really. "Unterdruck" instead of "unter Druck" would result in the same confusion.
- #10
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Would it not just be the pressure in the tank x the area of the orifice?
I.E. If the pressure is 1 Mpa (above ambient) and the orifice is 12mm then the thrust should be 1 Newton, right?
I.E. If the pressure is 1 Mpa (above ambient) and the orifice is 12mm then the thrust should be 1 Newton, right?
- #11
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Your force is the normal force, and your pressure is the surface pressure. We can't use those in my problem. The thrust is based on other variables . Check out this link to find out more : https://en.wikipedia.org/wiki/Thrust