| Re: TGV Aerodynamic Noise |
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Group: alt.planning.transportation · Group Profile
Author: Scott M. KozelScott M. Kozel Date: Sep 8, 2008 15:35
James Robinson 212.com> wrote:
>
> "Scott M. Kozel" comcast.net> wrote:
>
>> Son, I've listened to jet airliners and other jet aircraft since the
>> early 1960s. That video had 5 different shots of trains going by that
>> overpass, and the farthest was about 100 meters from the train. The
>> noise sounded reasonably similar (including its volume) to a fighter
>> jet or airliner zooming overhead at about the same distance.
>
> Bwaahahaha, that's the funniest thing I've read today. Do you really
> think you can judge sound levels from a video? Somehow, I bet you do.
>
> A jet fighter puts out between 135 and 153 dBA, measured at 15 meters:
Bwahawhawhawhaw !!
Naturally JR quotes the figure for 100%% military power and full
afterburner. Outside of wartime you wouldn't see that within 2 miles of
the ground.
Care to quote the figure for an airliner moving at about 200 mph (i.e in
the proximity of the ground)?
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