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RENFE 'Pato' - Valencia, Spain
RENFE AVE Class 112 'Pato', Valencia Joaquín Sorolla station, Spain, 26-Feb-19

[Image: DSC03820.jpg]  [Image: DSC03830.jpg]  [Image: DSC03821.jpg]
[-] The following 2 users Like chrisjo's post:
  • Off The Rails, Super
Happily collecting things all my life... Big Grin
[-] The following 1 user Likes Nigels's post:
  • Super
I am always amazed at the different engineering for aerodynamics there are. Thats a very low and long nose. Is this a new train?
[Image: super-smiley-emoticon.gif]
Thats a very low and long nose. Hence the name 'Pato' (= duck)

Is this a new train? By no means. The first units entered operation in 2005.

Pay particular attention to the wheel arrangement. These trains are known for their unconventional articulated passenger coaches. The wheels are mounted in pairs but not joined by an axle and they are between coaches rather than underneath individual coaches; there are only two wheels per coach. More here.

Similar rakes of coaches are used by RENFE on trains hauled by electric locos. Some are able to switch gauge while in motion between AVE (high speed) standard gauge and regular Spanish broad gauge lines.
[-] The following 1 user Likes chrisjo's post:
  • Super
Thanks, the duck.

Those sure are different ideas for sure. The 'Variable gauge' sure is innovative and would surely be of help so the train can also utilize existing tracks rather than the initial expense of building entire systems to accommodate the high speed train. I am curious as to how the passengers feel anything with the 'Natural tilting' movement or is it made for them to feel less.
[Image: super-smiley-emoticon.gif]
I wonder if the “duck bill” is done for same reason as the various long nose Shinkansen designs? Basically, to reduce the effect of air compression in tunnels and the resulting boom or thump as the train exits.
[-] The following 1 user Likes Off The Rails's post:
  • Super
Good point OTR. I never thought about what sound a high speed train would create when blasting into an entrance to a tunnel. I would think that some of Japans Shinkansens noses would be as slim if it weren't for the retractable couplings like the E5's and 6's.
[Image: super-smiley-emoticon.gif]
(03-06-2019, 06:35 PM)Super Wrote: I would think that some of Japans Shinkansens noses would be as slim if it weren't for the retractable couplings like the E5's and 6's.


[Image: Untitled.png]
[-] The following 1 user Likes chrisjo's post:
  • Super

The coupling in the picture doesn't seem functional as the noses look too close together to maneuver curves without bumping at least that is what it looks like to my amateur engineering mind.
[Image: super-smiley-emoticon.gif]
and yet... Smile

I don't deny it isn't used, its just that my minds learning can't see how that would work unless...the coupling moves in and out on curves or the tracks the train uses has curves that are very gradual but then that would make the 'Variable Gauge' useless because the arc of regular train lines curves must be a lot sharper. Don't mind me and my mind...see what I did there? [Image: confusion-smiley-emoticon.gif]
[Image: super-smiley-emoticon.gif]
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  • chrisjo

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