Baluncore's latest activity
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Baluncore replied to the thread Piston suction pump versus external gear pump as vacuum pump.Since some of the inlet pressures are negative, the pressures must be referenced to atmospheric pressure = 0 bar, with a vacuum = -1.0 bar. -
Baluncore replied to the thread Piston suction pump versus external gear pump as vacuum pump.The file attached to post #45, appears to be different to the one you are looking at. It has a different page 16.
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Baluncore replied to the thread Piston suction pump versus external gear pump as vacuum pump.That is a 20-page technical document. Please give the page number and identify the figure or table that refers to zero bar.
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Baluncore replied to the thread Undergrad Is a half submerged object submerged in its own displaced water?.When the bottom of the object is at 4.0 , the object is 0% submerged and the top of the object is at 5.0 . As you lower the object into...
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Baluncore replied to the thread Undergrad Is a half submerged object submerged in its own displaced water?.As you lower the object, the bottom meets the water at 4.0 . An instant later, it has displaced one drop of water, that has half filled...
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Baluncore replied to the thread Undergrad Is a half submerged object submerged in its own displaced water?.Maybe you should be measuring the submergence relative to the bottom of the object, and the surface of the water, not the top of the...
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Baluncore replied to the thread Piston suction pump versus external gear pump as vacuum pump.Neither makes a better, lower pressure, vacuum pump. They both fail, but in different ways. The piston pump needs valves that prevent it...
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Baluncore replied to the thread Undergrad Have we found an ancient space habitat?.Caves and rock shelters on Earth are warmer than being exposed to radiative heat loss to the night sky. The internal thermal gradient of...
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Baluncore replied to the thread Undergrad Have we found an ancient space habitat?.Then why park in orbit with other asteroids when they could be going somewhere. Thrust could give them artificial gravity, while...
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Baluncore replied to the thread Undergrad Have we found an ancient space habitat?.Why do aliens need to simulate gravity by spinning a rock ? Residents, with a vestibular system, could not just look the other way.
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Baluncore replied to the thread Piston suction pump versus external gear pump as vacuum pump.Those pumps are expected to be flooded with hydraulic oil, without any air present. I expect those figures are the inlet pressure at...
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Baluncore replied to the thread Undergrad Unexpected findings in need of an explanation.Welcome to PF. The path of Mars, as seen from Earth, is mapped onto the celestial sphere behind Mars. Maybe it has something to do with...
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Baluncore replied to the thread High School Fan is pushing in the front and sucking from the back.Referring to the front and back can be confusing because it depends on how you look at it. Maybe refer to the air inlet and outlet, the...
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Baluncore replied to the thread Control type problem from mechanics."Downwards" suggests that the rod is being accelerated down the y-axis and along the x-axis by gravity. Yes, but only for a finite...
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Baluncore replied to the thread High School Automobile Does Front Flip.You get your front wheels in the air by accelerating, and hold them there until they pass clear over a step-up, that is then hit by the...