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Blog Entry# 1870431
Posted: May 30 2016 (03:37)
43 Responses
Last Response: Jun 03 2016 (11:52)
43 Responses
Last Response: Jun 03 2016 (11:52)
New/Special Trains
NR/Northern
scsharma1986 3199 news posts
टेल्गो कोच की विशेषता यह है कि ट्रैक बेहतर हो तो 250 से लेकर 275 किलोमीटर प्रति घंटे की रफ्तार से इस ट्रेन को दौड़ाया जा...
read more... टेल्गो: 275 की रफ्तार से दौड़ने की क्षमता
38 Posts
antar aajaata hai,par dheere dheere vo usi speed pe chalne lagta hai jitna stand pe tha tab chal rha tha.vaise hi wdm3d slowly accelerate karte hue 160kmph pe chal sakta hai
WDM3D 160kmh pe capable hai but 120kmh pe restricted hai.Bcoz wdm3d
ka design aerodynamic nahi hai,isliye ise 0 se 160kmph tak accelerate karne me bahut time
lagta hai.Phir bhi kabhi kabhi SBC,DBRT Rajdhani ke saath dikh jaata hai.
is problem keliye DLW ne ek special aerodynamic 11121 WDM3D banaaya jo
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ka design aerodynamic nahi hai,isliye ise 0 se 160kmph tak accelerate karne me bahut time
lagta hai.Phir bhi kabhi kabhi SBC,DBRT Rajdhani ke saath dikh jaata hai.
is problem keliye DLW ne ek special aerodynamic 11121 WDM3D banaaya jo
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more...
Aerodynamics is not an issue with these locomotives. :)
For a locomotive hauling a train, the wind hitting from front is not a problem until the train attains high speeds (almost 180-200 kmph). And for most of the time, the cross winds (wind blowing under the coach, between the coaches) and the track resistance are more critical for speed. Even EMD's do not have a special aero-dynamic design. while the short hood side in EMDs has a cab with rounded features, it only offers a very small reduction in the air resistance, and on the whole, does not make any difference to the acceleration or top speed of the loco. When running in LHF mode, even EMD's do not have...
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For a locomotive hauling a train, the wind hitting from front is not a problem until the train attains high speeds (almost 180-200 kmph). And for most of the time, the cross winds (wind blowing under the coach, between the coaches) and the track resistance are more critical for speed. Even EMD's do not have a special aero-dynamic design. while the short hood side in EMDs has a cab with rounded features, it only offers a very small reduction in the air resistance, and on the whole, does not make any difference to the acceleration or top speed of the loco. When running in LHF mode, even EMD's do not have...
more...
The locomotives speed depends on it's traction motor's rated speed ( RPM) , gear ratio and wheel diameter. This is similar to a car or bike's gear system. If you are going up a slope, or carrying something heavy, we usually go in the 1st gear or 2nd gear. But if we have to go fast, we go in the 4th or 5th gear. But a locomotive does not have a fixed gear system. So, either the loco is permanently in 1st gear/2nd gear ( Just an analogy ), when it is useful for freight but can't go at high speeds, or the loco is permanently in 4th gear, where it can't haul heavy loads but can travel very fast. But the point is that you can't have both hauling capacity and speed with the same loco. For example, WAG9 and WAP7 are identical in all aspects ( including the 'aerodynamic'...
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The locomotives speed depends on it's traction motor's rated speed ( RPM) , gear ratio and wheel diameter. This is similar to a car or bike's gear system. If you are going up a slope, or carrying something heavy, we usually go in the 1st gear or 2nd gear. But if we have to go fast, we go in the 4th or 5th gear. But a locomotive does not have a fixed gear system. So, either the loco is permanently in 1st gear/2nd gear ( Just an analogy ), when it is useful for freight but can't go at high speeds, or the loco is permanently in 4th gear, where it can't haul heavy loads but can travel very fast. But the point is that you can't have both hauling capacity and speed with the same loco. For example, WAG9 and WAP7 are identical in all aspects ( including the 'aerodynamic'...
more...
more...