I am not a railroad engineer (aircraft electrical engineer) so I am not seeking to actually design locomotives or get into the rail industry. I just would like to know how they work and what the design decisions are in the process of creating a locomotive. I have googled a number of times but have never located a website that specifically addresses my area of interest.
Although I am most familiar with electrical systems, I am interested in all aspects of the design...electrical, structural, aerodynamic, pneumatic (do they still use air brake systems derived from Westinghouse?), hydraulic (do they use hydraulics, I don't know?), control, signalling and feedback systems, etc etc etc. I am nearly 50 years old but I turn into a 6 year old when a locomotive passes by.
Thanks to anyone who can point me to websites/books/videos etc that can further my interest in railroad locomotive design.