TLPTPW-The Last Person To Post Here Wins - 258
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TLPTPW-The Last Person To Post Here Wins - 258
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| Author | Message |
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David S  Send message Joined: 4 Oct 99 Posts: 18352 Credit: 27,761,924 RAC: 12 
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Slightly early lunch Ping! Only about 10 minutes earlier than normal. David Sitting on my butt while others boldly go, Waiting for a message from a small furry creature from Alpha Centauri. ID: 1823979 ·  |
 zoom3+1=4  Send message Joined: 30 Nov 03 Posts: 65745 Credit: 55,293,173 RAC: 49
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Slightly early lunch Ping! Getting up at 3:30am is early... The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's 
ID: 1823993 · |
Lynn   Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123
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Good Afternoon, everyone. 😃 ID: 1824014 · |
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zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65745 Credit: 55,293,173 RAC: 49
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Feeling slightly better than Ugh... The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's
ID: 1824021 · |
Carlos  Send message Joined: 9 Jun 99 Posts: 29830 Credit: 57,275,487 RAC: 157
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Post lunch post 
ID: 1824035 · |
Admiral Gloval  Send message Joined: 31 Mar 13 Posts: 20258 Credit: 5,308,449 RAC: 0
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Hey Santa. I found something I want. Want them both. Or a better cruncher. [edit] And also eight or ten batteries.  
ID: 1824064 · |
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David S Send message Joined: 4 Oct 99 Posts: 18352 Credit: 27,761,924 RAC: 12
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Trying to keep up with the Treks Ping! David Sitting on my butt while others boldly go, Waiting for a message from a small furry creature from Alpha Centauri. ID: 1824068 · |
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zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65745 Credit: 55,293,173 RAC: 49
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Waiting for My ankles to stop hurting, I've been driving and cooped up in a car for about 4.5 hours, just driving friends about. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's
ID: 1824073 · |
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David S Send message Joined: 4 Oct 99 Posts: 18352 Credit: 27,761,924 RAC: 12
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Waiting for My ankles to stop hurting, I've been driving and cooped up in a car for about 4.5 hours, just driving friends about. A euphemism break every couple of hours is also a good chance to stretch your legs. Ping! David Sitting on my butt while others boldly go, Waiting for a message from a small furry creature from Alpha Centauri. ID: 1824076 · |
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zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65745 Credit: 55,293,173 RAC: 49
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Waiting for My ankles to stop hurting, I've been driving and cooped up in a car for about 4.5 hours, just driving friends about. On the first trip I didn't feel like getting out, I was tired today, the 2nd trip was shorter. It's the fact that My car is cramped, My right knee hits the dash, I dare not stretch or I'll break another rare drivers seat... My last car was a 2006 Mustang GT, it was more comfortable, but on freezing nights the car battery would be drained by Count Master Power Relay, so I got rid of it and got this car, I should have got the Orange 2007 instead, I'd be mostly happy. The 2005-2016 Mustangs are wider than an Escort zx2 sport hot coupe, plus most parts are more plentiful. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's
ID: 1824079 · |
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David S Send message Joined: 4 Oct 99 Posts: 18352 Credit: 27,761,924 RAC: 12
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Leg room isn't exactly plentiful in the TB, but it's not a problem either. On a long highway drive, I can engage the cruise control and fold one leg under the other (as long as I keep one free to hit the brake if I need to). About bedtime Ping! David Sitting on my butt while others boldly go, Waiting for a message from a small furry creature from Alpha Centauri. ID: 1824099 · |
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Carlos Send message Joined: 9 Jun 99 Posts: 29830 Credit: 57,275,487 RAC: 157
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Noise win. At work I am writing a 300 page report on the noise effects of high speed trains. Working with a team of acoustic engineers and boy is it complex. Funny thing most of the track that I am writing about will be under ground. So no one will hear it. So do noise calculations matter when there is no one to hear them?
ID: 1824111 · |
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zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65745 Credit: 55,293,173 RAC: 49
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Do the calculations matter? I'd say yes, the calculations will or should refute any claims that people or animals can hear trains that are in a tunnel underground. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's
ID: 1824115 · |
celttooth  Send message Joined: 21 Nov 99 Posts: 26503 Credit: 28,583,098 RAC: 0 
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Do noise levels and durations have any effect on the life of the infrastructure?  edit: Has a study been done to measure to effects the noise may have on the environment around the track?   
ID: 1824116 · |
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David S Send message Joined: 4 Oct 99 Posts: 18352 Credit: 27,761,924 RAC: 12
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About to fall asleep whether I want to or not ping. David Sitting on my butt while others boldly go, Waiting for a message from a small furry creature from Alpha Centauri. ID: 1824124 · |
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Admiral Gloval Send message Joined: 31 Mar 13 Posts: 20258 Credit: 5,308,449 RAC: 0
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What about the noise inside the tunnel. Is it louder in the enclosed space? And the effect of the sound pressure wave?
ID: 1824125 · |
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zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65745 Credit: 55,293,173 RAC: 49
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Last I heard people were complaining about electric motors being too quiet, HSR does not use noisy diesels, just electricity. Now HSR does make some noise, but I think it's mainly from the pantograph and the aerodynamic shape of the HST, the pantograph has small walls near the pantograph to reduce such noise. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's
ID: 1824131 · |
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Carlos Send message Joined: 9 Jun 99 Posts: 29830 Credit: 57,275,487 RAC: 157
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The major noise source is the pantograph. No the noise and vibration do not impact the infrastructure. Building two tunnels. One for each direction.
ID: 1824134 · |
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zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65745 Credit: 55,293,173 RAC: 49
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The major noise source is the pantograph. That's what I thought Carlos. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's
ID: 1824135 · |
rob smith   Send message Joined: 7 Mar 03 Posts: 22199 Credit: 416,307,556 RAC: 380 
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One "interesting" thing to think about is noise that comes from the tunnel ventilation system! Head-end pressure pulses can be used to assist the tunnel ventilation, but can in themselves be a source of noise at the ends. Also the tunnel itself can project noise generated inside for some distance beyond the tunnel mouth, obviously this can be reduced by some considerable margin by careful shaping of the tunnel approaches and (this may not work in very arid areas) suitable planting of trees and shrubs. Noise from trains is a fascinating subject.... Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? ID: 1824144 · |
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