... responding to the post that seemed to suggest that the "front" was the only factor in aerodynamicnoise. It sounded like a jet airliner going by ... You obviously never listened to jet airliners. In ..., and the farthest was about 100 meters from the train. The noise sounded reasonably similar (including its volume) to a fighter jet ...
...to the post that seemed to suggest that the "front" was the only factor in aerodynamicnoise. It sounded like a jet airliner going by ... You obviously never listened to jet airliners. In ... and the farthest was about 100 meters from the train. The noise sounded reasonably similar (including its volume) to a fighter jet ...
... seemed to suggest that the "front" was the only factor in aerodynamicnoise. It sounded like a jet ... The trucks don't generate much aero noise, but plenty of tire noise...., I can attest that that noise is continuous, even over 24 hours, whereas the train noise is occasional and only lasts a few ... As to comparison with jet aircraft noise, those data are readily available, ...
... responding to the post that seemed to suggest that the "front" was the only factor in aerodynamicnoise. It sounded like a jet airliner going by ... You obviously never listened to jet airliners. In the..., and the farthest was about 100 meters from the train. The noise sounded reasonably similar (including its volume) to a fighter jet or ...
... the post that seemed to suggest that the "front" was the only factor in aerodynamicnoise. It sounded like a jet airliner going by ... You obviously never listened to jet ... 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 ...
Hans-Joachim Zierke <Usenetspam013@Zierke.com> Zierke wrote: Scott M. Kozel schrieb: Aerodynamicnoise comes from the top, sides, wheels, and joints between the cars, as ..., which will create almost 50%% of the aerodynamic resistance of an Amtrak train. Didn't ... the "front" was the only factor in aerodynamicnoise. It sounded like a jet airliner going ...
Scott M. Kozel schrieb: Aerodynamicnoise comes from the top, sides, wheels, and joints between the cars, as well. You forgot the underside, which will create almost 50%% of the aerodynamic resistance of an Amtrak train. Otherwise yes, that's true, and it's the reason, why high-speed trains have a lower profile (less total ...
Scott M. Kozel wrote: Aerodynamicnoise comes from the top, sides, wheels, and joints between the cars, as well. Very true. And even in those areas the Series 700 trains are far superior from what I understand than the TGV design.
... several years, however. You will find footage of both of those on youtube as well. The TGV, by contrast, uses a front end design that is almost 30 years old. Naturally, it isn't as good as the latest design methods are able to produce. Aerodynamicnoise comes from the top, sides, wheels, and joints between the cars, as well.
... gl4316@yahoo.com wrote: The sound of air rushing is something that is quite easily swallowed over long distances. The very low frequency component of jet engine noise travels extremely far distances, because that is what low frequency sound does. The low frequncy rumble of aircraft taking off at the Portland airport used to rattle my windows, when I lived ...
