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Bigwillyd
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"Wing Commander Physics" and Bernoulli's Principle?
Hey guys, I was wondering if you could lend me a hand on how to deal with a particular situation I have. I have an assignment regarding bad physics in movies, and the movie I chose is really an easy one to bash: "Wing Commander" (1999). If any of you have seen it, it's a real joke. So far I've it's been more than easy to mathematically disprove the movie's horrible physics, but the "cargo bay depressurization" scene is rather tricky.
If you havn't seen the movie, I'll bring you up to speed on this particular scene: A small tear opens up in one of the ship's cargo bay's bulkheads and naturally as Bernoulli's Principle states the air inside the cargo bay is blown out into space through the hole at very high speeds as the two pressure systems try to balance out. What I'm trying to find out here, is a very rough appriximation of the velocity of air being blown out of the oriface.
I've gathered the givens which I believe are needed:
Pressure in space = 0 (approximately)
Pressure inside the cargo bay= 101325 Pascals (atm)
Density of air inside the cargo bay = 1.2 kg/m^3 (average density at 20 deg. C in Earth atmosphere)
Velocity of air flowing out of the oriface = ?
Ultimately what I need here is a very rough equation which will allow me to get velocity. If any of you guys can help me tackle this bad boy, a link to another thread where this situation has already been discussed, or maybe even just a URL on how to solve this myself, I would be very appreciative. Again, all I need is a simple equation to give me a very rough approximation; no integrals please!
Thanks again, -Willy
Hey guys, I was wondering if you could lend me a hand on how to deal with a particular situation I have. I have an assignment regarding bad physics in movies, and the movie I chose is really an easy one to bash: "Wing Commander" (1999). If any of you have seen it, it's a real joke. So far I've it's been more than easy to mathematically disprove the movie's horrible physics, but the "cargo bay depressurization" scene is rather tricky.
If you havn't seen the movie, I'll bring you up to speed on this particular scene: A small tear opens up in one of the ship's cargo bay's bulkheads and naturally as Bernoulli's Principle states the air inside the cargo bay is blown out into space through the hole at very high speeds as the two pressure systems try to balance out. What I'm trying to find out here, is a very rough appriximation of the velocity of air being blown out of the oriface.
I've gathered the givens which I believe are needed:
Pressure in space = 0 (approximately)
Pressure inside the cargo bay= 101325 Pascals (atm)
Density of air inside the cargo bay = 1.2 kg/m^3 (average density at 20 deg. C in Earth atmosphere)
Velocity of air flowing out of the oriface = ?
Ultimately what I need here is a very rough equation which will allow me to get velocity. If any of you guys can help me tackle this bad boy, a link to another thread where this situation has already been discussed, or maybe even just a URL on how to solve this myself, I would be very appreciative. Again, all I need is a simple equation to give me a very rough approximation; no integrals please!
Thanks again, -Willy
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