Recent content by cstoos

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    Calculating Probability of Score Comparison between Two Distributions

    Forgive me if this is a silly question, but here goes: Say you have two unrelated distributions (A and B) with known means and standard deviations. How would you determine the probability of any single value of A being greater than any single value of B? The easiest example I can come up...
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    Online ME Masters Degree: Balancing Work and Education - Advice Needed"

    Thanks for the reply. That is pretty much the type of information I am looking for. I have been worrying about things like labs associated with classes, necessary software programs that I won't have computer lab access to, etc. A two hour drive every few weeks wouldn't be too bad, but the...
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    Online ME Masters Degree: Balancing Work and Education - Advice Needed"

    I have been looking at getting my ME Masters degree, but I am currently working full time and will definitely not be taking time off to pursue it (meaning, I want to accomplish it while working). My only local option doesn't really offer night classes for engineering graduate degrees so that...
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    I am drawing a blank. Need help.

    Thanks. I feel like an idiot. I hate when that happens.
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    I am drawing a blank. Need help.

    What are http://www.biconet.com/birds/GIFs/stealth/acc/cableTensioner2.jpg" called? I need to order some but my brain cannot recall the technical term and google can't seem to interpret what I am trying to find.
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    How much torque needed to turn a 1.2m disc

    Lindsey, I think the reason you are having trouble getting a clear answer is that without a set time period you cannot calculate required torque. Force = Mass x Acceleration Torque = Force x Radius = Mass x Acceleration x Radius Once the initial static friction is overcome, any motor...
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    How to Calculate Torque for Drilling?

    The torque of the drill is independent of the material it is drilling into. The "torque required" to drill something does depend on the material and the size of the drill bit. The http://en.wikipedia.org/wiki/Torque" has good explanations of torque and the calculations you will need.
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    Removing Noise from sound Audio Recordings

    Your best bet is to design a filter of some sort if it is truly noise (like 60Hz electronic interference). Study up on low/high/band pass filters. If it is just background audio you are worried about then some sort of sound filter, like the styrofoam on the end of microphones will help...
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    How much torque needed to turn a 1.2m disc

    Like Mech Engineer said, the size of the motor isn't really the biggest question. As long as the motor has enough torque to overcome the initial bearing friction it should be able to accelerate the discs to the desired speed (eventually). Is the clutch to protect the gears and motor or is it...
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    Designing Vehicle Payload Isolator System: Help Needed

    I am trying to design a small isolator system for a vehicle payload. I want to run it through a sine-on-random and a random-on-random input to try and optimize the design, but I am having trouble finding exactly what to use for the input functions. I assume it is more involved than typing...
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    Can anyone recommend a good book on Controls?

    Do you have any references that you recommend? I googled a few and most of it is "this is how you draw this process on a SFC" or "this is the logic to use when utilizing our software". None of the ones that I have seen so far say "X component acts as a laplacian integrator" or "Analog...
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    Need ideas about a project : Thermodynamics description of a watt steam engine.

    Are you trying to describe the engine itself or the steam cycle associated with the engine?
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    Can anyone recommend a good book on Controls?

    Not so much the math and theory of controls but the actual physical implementation and make up of control systems. Something that tells you how to go from the Laplace domain to real life.
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    Best MS Student Calculator for 3rd Year Mech Eng Student

    I have always used a Texas Instruments 30XIIS and I have made it through school just fine. I always finish the tests before the guys with the giant graphing calculators. Something else to think about, when you take the FE exam you can't use anything higher than a TI-30 or something close to...
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    DC Motor Control for Portable Telescope Mounts: Maintaining Constant Speed

    What kind of torque can I expect to see out of something like that? This design is going to be a bit beefier than most common mounting systems.
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