On Fri, 15 May 2015 03:22:03 -0700, RobertMacy Gave us:
Most of the losses on today's unkempt lines are insulator leakage related.
The number averages 10%, but is far higher in high use areas where power downing is not tolerated for service periods. They have gone without maintenance for decades. California is a big offender.
WE pay for that stupid shit behavior too.
akuminimum is horrible stuff, metal fatigue would do them in in no time.
-- umop apisdn
Quasi government operation makes it a train wreck looking for a place to happen. When the main operation in Washington collapses, and it will, everything else will look like a picnic.
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Engineer was another freak like the Lubitz lunatic. It's one thing to devel op a fascination, but quite another to develop an obsession. You can tell b y looking at the freak that he's not right, I wouldn't board a train with s omething like that at the controls.
Wasn't it something like (driver snooze) that that caused the blue line El train to ascend a staircase at O'Hare?
There are trains running at routine speeds of double that (4x the kinetic energy) in China etc. but when something goes wrong the results are fairly dramatic (30 dead in an accident compared to 7 here
-- just about 4x!). Still nowhere near as bad as an aircraft.
-- Best regards, Spehro Pefhany Amazon link for AoE 3rd Edition: http://tinyurl.com/ntrpwu8 Microchip link for 2015 Masters in Phoenix: http://tinyurl.com/l7g2k48
Airplanes last a while, even with pressurization cycles that rail cars don't have.
Prolly not. That's stuff's used in situations like combustion chamber turbine blades and thermowells that live in hot boiling acid.
As "Stompin' Tom" Connors wrote..
The girls are out to Bingo and the boys are gettin' stinko, And we think no more of Inco on a Sudbury Saturday night. The glasses they will tinkle when our eyes begin to twinkle, And we'll think no more of Inco on a Sudbury Saturday night.
-- Best regards, Spehro Pefhany Amazon link for AoE 3rd Edition: http://tinyurl.com/ntrpwu8 Microchip link for 2015 Masters in Phoenix: http://tinyurl.com/l7g2k48
Are you coming to that event? ...Jim Thompson
-- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at
On Fri, 15 May 2015 12:35:58 -0400, Spehro Pefhany Gave us:
The odds of dying in a 747 jumbo jet are about 1 million to 1.
Thus far, BILLIONS of passengers safely transported.
Trains come nowhere close to that number.
Get your stats straight, boy.
They kill folks when folks are not even on them.
The new Ford F150 is aluminum body with a high strength steel frame. They've managed to slash 700 pounds from the weight. Quite impressive.
-- Best regards, Spehro Pefhany Amazon link for AoE 3rd Edition: http://tinyurl.com/ntrpwu8 Microchip link for 2015 Masters in Phoenix: http://tinyurl.com/l7g2k48
Hi, Jim:-
Qualified maybe at this point. uChip isn't much of the work I'm doing now.
Best regards,
-- Best regards, Spehro Pefhany Amazon link for AoE 3rd Edition: http://tinyurl.com/ntrpwu8 Microchip link for 2015 Masters in Phoenix: http://tinyurl.com/l7g2k48
Are you aware of the sound 400 Hz electrical equipment makes? Motors, especially, can be REALLY loud. Also, leakage of 400 Hz (or 800, 1200 etc.) into audio circuits can be quite a problem. It can be heard on many aircraft radio channels.
Jon
Believe it or not, a number of coal freight cars are now made of Aluminum. They get about a foot shorter over their useful life due to the bashing together of the couplers.
Jon
If you come to Phoenix, give a shout and we'll tip a few. ...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: skypeanalog | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
There's very little energy penalty for making long distance trains heavy--the rolling resistance is low, and they don't brake all that often except on downgrades. Subways are another matter.
Cheers
Phil Hobbs
-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
Cows?? :)
MASTERS? Been there, done that, twice, about 10 years ago.
Paul
Maryland, right? I'm ex-WV and understand tipping cows. My father, while a student at Alderson-Broaddus College (now University), helped _CARRY_ two cows up a flight of stairs into the university lobby ;-) ...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: skypeanalog | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
Definitely! Thanks.
Best regards,
-- Best regards, Spehro Pefhany Amazon link for AoE 3rd Edition: http://tinyurl.com/ntrpwu8 Microchip link for 2015 Masters in Phoenix: http://tinyurl.com/l7g2k48
theyre shaped so as not to deform much with the pressure.
the air's a lot smoother than a typical railway track.
The old Land-Rover County was designed on a similar plan. steel frame aluminium body panels.
-- umop apisdn
At overhead HV lines, at transmission distances over 1000 km, HVDC transmission becomes more economical. If 400 Hz distribution would be used, due to the capacitive loading, transmission distances would be much shorter, requiring HVDC/MVDC feeds to practically every town.
The advantage with DC is that it utilizes the conductor cross section all the time, while in AC, practically no current flows at times,
losses), also the insulator must withstand the peak voltage.
DC distribution would also make sense, since most loads (including VFD motors) do some rectifications anyway. Doing DC/DC conversion is easier than DC/sinewave/DC conversions.
In Finland, there are some experiments using +/-750 V DC feeds in rural distribution, which is still classified as low voltage and much of LV hardware (including ABC cabling) can be used. At each house, there is an inverter, making 230/400 V 50 Hz.
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