scholarly journals Demonstration of a high speed hybrid electrical and optical sensing system for next generation launcher applications

2017 ◽  
Author(s):  
Selwan K. Ibrahim ◽  
Peter O’Connor ◽  
Milos Melicher ◽  
Danny Gleeson ◽  
John A. O’Dowd ◽  
...  
Keyword(s):  
High Speed ◽  
Optical Sensing ◽  
Next Generation ◽  
Sensing System

Design Concepts for the Next Generation of High-Speed Diesel-Electric Locomotives

2014 ◽  
Author(s):  
John Tunna ◽  
Jingjun Zhang ◽  
Adrian Gorski
Keyword(s):  
High Speed ◽  
Next Generation ◽  
Design Concepts ◽  
Passenger Rail ◽  
High Speed Diesel ◽  
Unsprung Mass

The Passenger Rail Investment and Improvement Act (PRIIA) Section 305 Next Generation Equipment Committee’s specification for diesel-electric locomotives has several challenging requirements. Among these is limiting P2 Force to 82,000 pound force (lbf) at 125 miles per hour (mph). To achieve this, the locomotive designer would have to balance unsprung mass and axle load. A design envelope exists within which that balance can be achieved. Advanced designs of traction and braking systems are required, and attention has to be paid to minimizing the overall mass of the locomotive.

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