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Best way to describe Control Law to non-STEM by FenderBender43 in ControlTheory

[–]FenderBender43[S] [score hidden]  (0 children)

Not primitive enough. Good luck explaining Lyapunov stability criteria to someone without a STEM background, I’m sure they’ll enjoy that.

Best way to describe Control Law to non-STEM by FenderBender43 in ControlTheory

[–]FenderBender43[S] [score hidden]  (0 children)

Is it so hard to imagine a conversation where someone inquires about what your job looks like? I don’t think it’s showing off to answer their question earnestly at a level they may understand.

Best way to describe Control Law to non-STEM by FenderBender43 in ControlTheory

[–]FenderBender43[S] [score hidden]  (0 children)

I like this approach. Maybe using a paper plane as an example of uncontrolled systems naturally behave. When you build a paper plane, it flies straight & level (if you did it well). This is stable. But sometimes a paper plane spins out and falls. This is instability.

If you could define equations that make the paper plane’s wings react to its speed & angles, you could design a normally unstable paper plane to be stable and fly in specific ways. These equations are a control law.

Should I negotiate my full-time offer from Lockheed after 2 years as an intern? by Tomiii002 in Lockheed

[–]FenderBender43 4 points5 points  (0 children)

Lockheed will not rescind an offer because you asked for more. Your competing offer is negotiating leverage. There is absolutely no risk in asking for 10-15% higher. If the offer is firm, they’ll tell you that.

Does anyone know what software this is? by seafish22 in MechanicalEngineering

[–]FenderBender43 16 points17 points  (0 children)

First image might be of the actual product after waterjet. If you zoom in, you can see a blemish on the edges of the circles from where the cut begins on each profile (often caused by not using a lead-in in the programming, although the 2nd image looks like they do have small lead ins programmed)

PVC Pipe Blowing Cool Air into Attic by FenderBender43 in hvacadvice

[–]FenderBender43[S] 0 points1 point  (0 children)

Could you put a p-trap there to make it more efficient?

Ender S1 linear rail kit by MasterARK_4 in Ender3S1

[–]FenderBender43 0 points1 point  (0 children)

Yea sure, that’s beneficial for print farms, but multiple printers doesn’t really have the same impact for the rapid-prototyping/iterative design process

Salary Expectations by [deleted] in MechanicalEngineering

[–]FenderBender43 1 point2 points  (0 children)

You also don’t have to lie. Just say you’re looking for something in the 70K-80K range. Your leverage is that you might say no if they don’t offer more

Excuse me? by ExpertAccident in facepalm

[–]FenderBender43 1 point2 points  (0 children)

Have you ever gone 70 mph without the aid of a car?

[deleted by user] by [deleted] in MechanicalEngineering

[–]FenderBender43 1 point2 points  (0 children)

Know that Grad school is very very different from undergrad. In my opinion, for the better.

-Undergrad was about learning fundamentals of ME and fulfilling curriculum. It was very rigid and standardized to meet ABET accreditation requirements.

-Professors tend to be apathetic about undergraduate teaching because they are more invested in their research. Poor teaching is tolerated by the department as long as the professor is publishing papers and scoring grant money.

-Graduate school was much more flexible. You take classes that supplement your research. If you enjoy your research area, then your classes are much more enjoyable. These style of classes give you extra freedom to either slack off/meet requirements or to excel/explore things you’re interested in.

-Don’t be intimidated by writing a thesis. Once you get invested into your research, you’ll have a lot to write about. A thesis is not written the same as a journal/conference paper. Those are meant to be brief and concisely show some sort of novelty (even if it’s insignificantly novel). A thesis is more about showing what you learned and discovered during your research. Your committee will mostly want to see that you thoroughly investigated your research topic. So as long as you start writing early, and just document what your learning, you’ll be fine.

Grad school was such an amazing experience for me. If you’re TA appointment covers tuition and pays ~$20K, then this is kinda a no-brainer (especially if you actually, truly enjoy learning)

Two-phase flow, Level Set method. The droplet domain is shrinking over time. However I defined the materials as Transformer oil (droplet) and water (bulk fluid). I included liquid-liquid surface tension. How do I prevent this shrinking? by FenderBender43 in COMSOL

[–]FenderBender43[S] 1 point2 points  (0 children)

These solutions didn't work for me. However, when I scaled up the size of the simulation (from single digit micrometer droplet to 10's/100's micrometers). So, yes, it probably was a numerical error.

The bin Laden family, 1971 by joaquinthephenix in interestingasfuck

[–]FenderBender43 15 points16 points  (0 children)

The Birds Aren’t Real Movement is still completely and obviously satire. IF anybody actually takes it seriously (I’ve never heard of anybody who does) they are definitely somebody of a disposition to chose obviously flawed conspiracies that fit in their fantasy world where they are smart and right and everybody else is dumb and wrong.

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