Reply to: Weird looking train

[gingerjedi]

I think the real answer here is much simpler than some are suggesting.
This train was designed by Scandinavians. The same simple folk that designed the traditional Volvo.
They actually believe it IS aerodynamic.
There are whole shoals of them who meet weekly to discuss just how aerodynamic the Breeze Block is...............apparently.
Mention concepts like Physics and Maths to them and you are likely to get an Axe through your head.

HTH

[scooterscot]

Are you thinking of this crash?

It's rather harrowing reading.

fatigue, just one of the failure modes that comes up in my analysis when trying to predict whether both engines on the plane will not shut down at the same time.

When no hear's about safety and reliability they don't complain, so pay my rate and ask no questions - that's what I tell em

[Sysman]

I don't really want to get into a conversation about trains but wasn't there a rail disaster in Germany where the wheels were to blame? They had a rubber cushion in them and it failed IIRC?

Are you thinking of this crash?

It's rather harrowing reading.

.The restaurant coach, six, was crushed to a 15 cm (six inch) height

[threaded]

I think the real answer here is much simpler than some are suggesting.
This train was designed by Scandinavians. The same simple folk that designed the traditional Volvo.
They actually believe it IS aerodynamic.
There are whole shoals of them who meet weekly to discuss just how aerodynamic the Breeze Block is...............apparently.
Mention concepts like Physics and Maths to them and you are likely to get an Axe through your head.

HTH

Gosh, someone who gets it.

[shaunbhoy]

I think the real answer here is much simpler than some are suggesting.
This train was designed by Scandinavians. The same simple folk that designed the traditional Volvo.
They actually believe it IS aerodynamic.
There are whole shoals of them who meet weekly to discuss just how aerodynamic the Breeze Block is...............apparently.
Mention concepts like Physics and Maths to them and you are likely to get an Axe through your head.

HTH

[scooterscot]

Oh my goodness... that seat61 is brilliant isn't it? Only found out about it when I was in trailfinders on Saturday - I've been a bit addicted to it since

I recommend planning a trip from anywhere in the UK to Hanoi (yes the one in Vietnam), you can travel there all be train!

The gal upstairs from me had done this, travelled on the trans siberian express, just imagine not only does the landscape change before your eyes but so do the people, just imagine....

go on, you owe it to yourself.

[TimberWolf]

http://www.seat61.com/images/Norway-oresund-train.jpg

I’m just arranging my trip to the Stockholm Tens
and while booking the train tickets I came across this picture of the Copenhagen to Stockholm train. What a strange looking contraption. Aside from the aesthetic eccentricities, I wonder how good the aerodynamics are at 160km/h.

Oops, just gave you negative rep for this interesting thread and observation that was intended to be positive. D'oh! No undo facility either

[Drewster]

There is a simple explanation for the cool appearance of this train, which does not involve complicated aerodynamics.

It is Italian.

<ahem> So is this......


Errr well coooool???

[Mich the Tester]

I travelled on one of these from Rome to Venice, I'm sure I was happier on my journey knowing the train looked cool as it sped through Umbria and Tuscany.

There is a simple explanation for the cool appearance of this train, which does not involve complicated aerodynamics.

It is Italian.

[Advocate]

I think its time to dig out a copy of Hoerners Fluid-Dynamic drag...

[threaded]

Which is why they have the bulbous surround at the "front/rear" so that when units like this are coupled the gap between the units is reduced. Cuts down on noise and buffetting.

Nah, not really.

The actual problem is solved in a slightly different way on the front of modern lorry tractor units, where one doesn't really ever want to couple to the unit in front.

The thing to notice is the similar recessing of the slab window and skirting down ground level.

[gricerboy]

I don't really want to get into a conversation about trains but wasn't there a rail disaster in Germany where the wheels were to blame? They had a rubber cushion in them and it failed IIRC?

Indeed and it was all down to the flanges.

[gingerjedi]

As I have said in previous railway related posts (and I don't want to be accused of repeating myself) the critical factor in determining a maximum velocity on any non straight section of line is the strength of the wheel's flanges regardless of bogey configuration be it BO-BO or CO-CO.

I don't really want to get into a conversation about trains but wasn't there a rail disaster in Germany where the wheels were to blame? They had a rubber cushion in them and it failed IIRC?

[gricerboy]

As I have said in previous railway related posts (and I don't want to be accused of repeating myself) the critical factor in determining a maximum velocity on any non straight section of line is the strength of the wheel's flanges regardless of bogey configuration be it BO-BO or CO-CO.

[gingerjedi]

I travelled on one of these from Rome to Venice, I'm sure I was happier on my journey knowing the train looked cool as it sped through Umbria and Tuscany.