⚙ Mechanical Engineering

OT: Resource on battery technology

For those of you who end up having to design self-contained electronic devices, I stumbled onto a "keeper" link: http:/...

0 comments posted 21yrs

posted by sporkedUNDERLINEagainMUNGE

0 comments posted 21yrs posted by sporkedUNDERLINEagainMUNGE

Need help with QPSK Demodulator

I've tried to realise the following circuit: http://www.elecdesign.com/Files/29/3168/Figure_01.gif from this article: h...

3 comments posted 21yrs

posted by u0205440_spammfree

3 comments posted 21yrs posted by u0205440_spammfree

Miniature mechanical trigger ideas needed?

I am looking for a miniature trigger to release a small compression or torsional spring that as about 1 lbf of force at...

7 comments posted 21yrs

posted by kurtsutherland

7 comments posted 21yrs posted by kurtsutherland

antigravity

You work in a patent office. One day this chap walks in with a rather large box and said he has invented antigravity. H...

11 comments posted 21yrs

posted by lynx_the_immortal2003

11 comments posted 21yrs posted by lynx_the_immortal2003

help missia

SHALOM I ask you to read this letter till the end! Don't treat to my words with indifferens. On Your understanding it w...

0 comments posted 21yrs

posted by israelhope

0 comments posted 21yrs posted by israelhope

Mechanical engineers should have electronics foundations?

I am a ME sophomore, when I look at senior projects, there are electric car, or AI based projects. So does it mean ME s...

7 comments posted 21yrs

posted by jrefactors

7 comments posted 21yrs posted by jrefactors

Decimal precision

Hi all, As an mechanical engineering student, what is the normal decimal precision? I think it is about 4 signifcant fi...

11 comments posted 21yrs

posted by josefg

11 comments posted 21yrs posted by josefg

news groups dedicated to the history of science?

Are there any news groups dedicated to the history of science? Thanks Paul

0 comments posted 21yrs

posted by REMOVEpkurowski

0 comments posted 21yrs posted by REMOVEpkurowski

Not All Control Loop Cycles Are Due to Tuning

If a control loop has dead band in it, usually in a valve, but occasionally somewhere else, like in a transmitter, a lo...

1 comments posted 21yrs

posted by dwstclair

1 comments posted 21yrs posted by dwstclair

Name of an object

I am seeking the name of an object I have seen in newspapers elsewhere, I just can't find it. It was a cylinder with en...

2 comments posted 21yrs

posted by joe

2 comments posted 21yrs posted by joe

What gasket material should I use?

Hi I've designed a flow cell made up of 2 pieces of plexiglas with fluid flowing in between. The top and bottom pieces...

5 comments posted 21yrs

posted by pcywong

5 comments posted 21yrs posted by pcywong

heat loss thru unisulated copper tubing

Fellow ME's- I was never very good at the heat transfer thing.......picking / estimating / guess heat transfer coeffici...

2 comments posted 21yrs

posted by bobk207

2 comments posted 21yrs posted by bobk207

In Praise of the General Offset Ratchet Screwdriver.

I saw this tool in the hardware store recently, and bought one. The design has been unchanged for many years. It is som...

1 comments posted 21yrs

posted by betwys1

1 comments posted 21yrs posted by betwys1

Re: Axial loaded thread design

> > You may want to use different STRENGTH nuts and bolts. Typically, > > you want to use a nut at least 45% stronger t...

6 comments posted 21yrs

posted by dhneum

6 comments posted 21yrs posted by dhneum

deflection calculation

Morning, I am running a deflection calculation to size the amount of force needed to pre-bow a piece of rectanglur stee...

6 comments posted 21yrs

posted by bgallagher

6 comments posted 21yrs posted by bgallagher