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5AT
Power type Steam
Designer ???
Configuration 4-6-0
Gauge Any gauge including 4 ft 8½ in (1,435 mm)
Leading wheel size ???
Driver size 1.88 m
Trailing wheel size ???
Length ???
Locomotive weight 160 - 170 metric tons
Fuel type Diesel fuel or gas oil
Fuel capacity 7 metric tons
Water capacity 46 metric tons
Boiler ???
Boiler pressure 2,100 kPa (305 psi)
Fire grate area ???
Heating surface: Tubes ???
Heating surface: Firebox ???
Superheater area ???
Cylinders 2
Cylinder size 800 × 450 mm
Valve gear Walschaerts
Tractive effort 146 kN (32,830 lb)

The 5AT is a new main line steam locomotive under design by the 5AT Project. Intended to fill the niche of the successful British 5MT, but using the latest, proven steam technology, it has nearly 3500 horsepower, making it more powerful than diesels such as the Deltic. Using recent developments by engineers including André Chapelon, Livio Porta, and Dave Wardale, the 5AT has double the thermal efficiency of classic steam locomotives. The locomotive exists in simulation and model form, but is intended to be built full size.

Contents

[edit] Locomotive overview

The locomotive design emphasizes:

  • Power, sufficient to run at maximum of 200 km/h, or at 113 km/h with 29 coaches.
  • Speed sufficient to work on the same lines as diesel and electric locomotives.
  • Thermal efficiency.
  • Low fuel and water consumption.
  • Low maintenance and operating cost.
  • Reliability and availability.
  • Operational safety and crew convenience.
  • Environmental friendliness.[1]


[edit] 5AT project overview

As well as producing the design for a viable new steam locomotive, the 5AT project has historical, educational, and other practical goals:

"1) To demonstrate what steam locomotion could have achieved if greater attention had been paid to the developments in engineering and science that were available during steam's heyday.

2) To produce a locomotive that can travel at adequate speed, over sufficient distance and demonstrating adequate reliability while hauling a commercially viable payload, to ensure the continuation of main-line steam operations in the coming era of higher speed trains and higher track utilization.

3) To produce a financially viable operating plan for the locomotive capable of generating adequate rates of return to warrant commercial funding for the venture, and to justify the construction of additional locomotives to the same design.

4) To set standards for steam locomotive operation that befit the 21st century, and thereby establish a basis for future development of the technology and perhaps the construction of new locomotive designs to meet any future needs or a changing world.

5) To maintain an interest in, study of, and perhaps even a love of, steam traction amongst future generations of children, students and engineers." [2]

[edit] References

[edit] External links