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Pamban Sethu - இது தான் நம்முடைய ராமர் சேது - Darnish C

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Blog Entry# 4638199
Posted: May 26 2020 (19:40)

3 Responses
Last Response: May 26 2020 (19:52)
General Travel
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May 26 2020 (19:40)  
rhythmsofrail^~
rhythmsofrail^~   8478 blog posts
Entry# 4638199              
why MEMU and EMU has flat front. I mean to say all Locos have curved front to push the air they are aerodynamically designed and it improves acceleration too. Why not it happen for EMu's
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May 26 2020 (19:43)
MR_INDIANRAILIN   17498 blog posts
Re# 4638199-1              
Aerodynamics have a significant role post 100 110
Before that they don't make any significant difference hence they are made flat
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May 26 2020 (19:51)
TheMadrasMail~
TheMadrasMail~   6349 blog posts
Re# 4638199-2              
Just to nitpick here, having an aerodynamic cab shape does not improve acceleration or increase the speed of the locomotive. It just ensures that the locomotive has to spend lesser energy to run at a particular speed.
That said, the locomotive cab shape only becomes significant at higher speeds (more than 200kmph). Unlike Aeroplanes or cars, trains are usually very long. So, the surface on the sides (coaches) and the spaces between the coaches contribute much more to the aerodynamic drag than the shape of the loco.
Especially Indian passenger trains are extremely
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long. Even a 16 coach rake is about 340m long and only about 3.5m wide. And with MPS of only 100-130kmph on most routes, the shape of the cab doesn't matter much.
That's why most MEMUs and EMUs have a relatively flat cab face. There are no benefits to spend extra money on designing and maintaining a complicated cab face.

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May 26 2020 (19:52)
rhythmsofrail^~
rhythmsofrail^~   8478 blog posts
Re# 4638199-3              
But still if the curved front are for EMU then more quicker acceleration will be there ,
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