| Re: alternate brake system |
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Group: alt.railroad.steam · Group Profile
Author: Bill FunkBill Funk Date: Jun 25, 2007 00:29
>> Becky aol.com> wrote:
>> >>> I am an engineering student and I just have a quick question regarding
>>> a project I am having difficulty with. I have been appointed (as part
>>> of the project) to design an alternate brake system to the one we have
>>> at the moment for our model. Now when the train brakes, all the
>>> compressors are in use, but our goal is to create a system that turns
>>> on one compressor at a time so that it is more efficient. I any one
>>> has any advice please let me know!
>>
>>
>> I think you need to do more research into how railroad air braking system
>> functions.
>>
>> The air compressors only run to maintain pressure in the air line. They
>> do not necessarily have to be running when the train brakes.
>
>And from an engineering standpoint, the speed of the braking "signal"
>is limited by the speed of sound in air. It will take the order of
>5 sec. for the reduction/increase of air pressure in the main brake
>line before anything is noticed at the other end of a mile-long
>freight train.
Probably, on a mile-long train, there are locomotives at more than
just the head end; a radio signal to apply brakes is relatively simple
to do.
This would cut that t ime.
Isn't this already done?
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