| Re: TGV Aerodynamic Noise |
|
 |
|
 |
|
 |
|
 |
Group: alt.planning.transportation · Group Profile
Author: Hans-Joachim ZierkeHans-Joachim Zierke Date: Sep 7, 2008 13:14
Scott M. Kozel schrieb:
> Didn't forget anything, really .... just responding to the post that
> seemed to suggest that the "front" was the only factor in aerodynamic noise.
>
> It sounded like a jet airliner going by ...
You obviously never listened to jet airliners. In the 80s, a friend of
mine was living under the approach of Berlin Tegel. When talking on the
phone, we had to stop for each plane, though the newest types were
slightly better and allowed conversation by shouting into the phone.
The distance from approach path to the roofs of houses is slightly :-)
bigger than what you see on that video.
What you get with a highspeed train, is about the same level as a
motorway packed with trucks. The trucks don't generate much aero noise,
but plenty of tire noise.
Hans-Joachim
--
I believe you are speaking of the Fourth Law of Thermodynamics, the Law of
Conservation of Bureaucracy. For every practical engineering solution, there is
an equal and contradictory obstacle put forward by a regulator because the
politics cannot be overcome. (Adam H. Kerman)
| 
