motor architecture

snipped-for-privacy@highlandsniptechnology.com wrote in news: snipped-for-privacy@4ax.com:

Two stroke open port engines have two valves. One is a small "flapper" gate for the intake stroke, and the other is the piston itself crossing the open port in the side of the cylinder.

There are, of course, many configurations, Johnny.

Of course, the post was about the ELECTRIC "motor" not the internal combustion ENGINE.

So his question in his post about the engines would have been of the topic "OT: Engine Architecture".

søndag den 1. august 2021 kl. 17.30.16 UTC+2 skrev snipped-for-privacy@highlandsniptechnology.com:

yes there has been several engine with three valves per cylinder, two intake and one exhaust

the advantage of a turbo is that it runs on "free" energy, the energy extracted by the turbine would otherwise be wasted as heat and noise out the exhaust

current formula1 cars are hybrids with a motor-generator connected to the turbo to extract power to charge the battery and or drive the 150kW electric motor aiding the ~800hp combustion engine

Of course not. There are giant CO2 lasers, amazing motion control, and incredible Zeiss grazing-incidence lenses that look like diesel engines; nothing refracts at 13 nm.

In a wafer scanner, everything is in motion during the wafer exposure. It's not a stepper. That's mind boggling.

Yes. ASML acquired them. Intel ponied up a billion or two to help.

I've heard the estimate that the design and mask set for one high-end chip can now cost a billion dollars.

We did/do VME modules for their test stands. We simulate RTDs, thermocouples, oil debris sensors, synchros and LVDTs, weird stuff like that. Other people put the systems together and do the software.

The aerospace companies used to design their own test electronics, but as the EEs retire they are not being replaced.

I didn't insult MEs. I merely noted how hard is for them to know what's actually going on deep inside a running engine, and how easy it is for us to probe a circuit.

Driving a good car or motorcycle is joy. I love MEs for that. And yes, an engine uses 100+ years of painfully acquired knowledge.

But it wasn't.

SI please. The days of horses are long gone.

Jeroen Belleman

snipped-for-privacy@highlandsniptechnology.com wrote in news: snipped-for-privacy@4ax.com:

You missed the t. I said sTimulate, not simulate. The resultant "theater" created in the chamber could be termed as a simulation. The entire chamber becomes more like a giant calibration stand.

As ironically stated by the John Doe snipped-for-privacy@message.header troll in message-id <sdhn7c$pkp$ snipped-for-privacy@dont-email.me who has posted yet another incorectly formatted USENET posting on Sun, 1 Aug 2021 15:07:22 -0000 (UTC) in message-id <se6dba$ld0$ snipped-for-privacy@dont-email.me.

I was just thinking that while watching a video of a mechanic rebuilding a transmission. Layers and layers and layers of gears and clutches and gaskets and snap rings. Just drawing a diagram of it would be Herculean labor, let alone designing it.

Since they are using raw materials instead of components, they can predict performance by calculation with less experimentation and measurement, so it doesn't matter that there is much they can't measure, but that's also an amazing feat.

"The company knew the danger but still exposed you to asbestos", as they say in the commercials.

"Stories from my seafaring days" also reminds me of the lyrics to Brandi:

Yeah, Brandy used to watch his eyes, when he told his sailor story she could feel the ocean fall and rise, she saw it's raging glory but he had always told the truth, lord he was an honest man and Brandy does her best, to understand

And you never went back to that poor girl.

Imagine calculating the stress on a gear tooth in a differential, or the dynamic pressure distribution in the exhaust manifold. The software to do that won't be free or easy to learn.

I doubt they knew I'd be climbing onto steam valves. At least the exposure was of short duration.

Alas, there are many poor girls that I never went back to.

To learn? Are you gonna trust a software sales pitch, or are you gonna WRITE the software? Heck, I've had cause to rewrite SPICE on occasion, there's nothing confidence-building in storebought software.

Case in point: has the stupidquotes bug been fixed recently, that you've noticed? Even technophobes (my sister, for one) have seen that one.

Just the data entry part of a mechanical or thermal analysis program is likely more than you'd want to take on; like rewriting SolidWorks. A schematic is trivial compared to a differential.

Learning how to use SolidWorks isn't trivial. Do you use SolidWorks?

What's that?

ASCII and typewriters use single-quote (apostrophe) and double-quote, but printers distinguish left-curved and right-curved variants (left-quote is reverse from right-quote). And then a smart editor decides which one you want, and suddenly you've got escape sequences or unicode characters that you didn't type. MS and Apple and Linux and printer fonts and reader softwares: there's dozens of ways to mess up an apostrophe.

A couple of years ago, I had a solution to get a Macintosh database printout to render a proper possessive apostrophe when viewed on an Android phone, but... I can't find my notes, and it's broken again.

Read-only, yeah, but for composition, I've just watched the mechanical guys jockey around. When I need geometry, I make a coordinate system and compute dot products, normal vectors... doing the same thing on a computer instead of on paper isn't a big leap.

whit3rd snipped-for-privacy@gmail.com wrote in news: snipped-for-privacy@googlegroups.com:

Solid Edge. Siemens' product is much better. They even do EDA now too.