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Results tagged with mechanical-engineering
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user 34967
Questions within the problem domain of mechanical engineering. Mechanical Engineering can be a broad field; consider choosing more specific tags if they apply.
3
votes
Accepted
How do mechanical engineers, in practice, account for drag/air resistance when designing mac...
In many cases, probably a majority, they ignore air drag, and simply design the torque capability of the engine as enough to deliver the required output, plus some sizable margin to overcome sources o …
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0
votes
0
answers
59
views
How accurate is axisymmetric beam theory for modeling plate bending?
I often have to do a quick estimate of circular plate deflection and max stress under simple loading scenarios – uniform distributed pressure, central point load, line load, distributed annular pressu …
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1
vote
Type of Engineer
Instrumentation engineer, with emphasis on optics, controllers, and the other stuff you said.
What you described is a great rap sheet for looking for a new job! And definitely emphasize NASA.
I would …
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3
votes
Preventing leakage in sludge tank
Nondestructive testing methods such as Ultrasonic, Magnetic Flux Leakage, and Eddy Current are routinely used to inspect tank interiors that are in operation.
My advice to address the cause would be t …
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0
votes
Concentrated and Distributed loads in regards to moments
Typically, a continually varying moment is due to a distributed force (i.e. the moment is the integral of the shear force). A concentrated moment will cause a step change in this moment, while distri …
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1
vote
Accepted
Notation on Continuity Eqn Derivation
It just means "located at the plane $x+dx$", and it really should be applied to the velocity, not the $dydz$.
Your cube has 6 faces. Flow in the $x$ direction can enter or exit the Control Volume by …
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1
vote
0
answers
40
views
Orifice flow meter equation applicability, modeling leak flow
I am trying to determine the correct equation to model ideal gas flow rate through an orifice as a function of pressure. The equation below I found in Marks' Handbook for Mech Eng 8th Ed, p. 3-64 whi …
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1
vote
How to convert car power into energy (MJ) used per km?
Can you not simply take the miles per gallon value times the Heating Value of the fuel?
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2
votes
How can you make a solid box jump up with no external forces?
Depending on how high you want it to go, you may not even need a spring, just a solenoid with sufficient travel and weight to it.
The force generated will depend on
$F=ma$
with the $m$ of the thing mo …
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1
vote
Mechanical mechanism that regulates gear's rotational velocity
Not sure if this exists off the shelf, but what if you installed in line with the spinning gear a device with two weights held in place by springs, which would move outward if the centrifugal force be …
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