Soviet locomotive class AA20

Soviet locomotive class AA20
А. Андреев, the only 4-14-4 locomotive ever built
Type and origin
Power typeSteam
BuilderKrupp
Voroshilovgrad Locomotive Factory
Build date1934
Total produced1
Specifications
Configuration:
 • Whyte4-14-4
Gauge1,524 mm (5 ft)
Leading dia.760 mm (29.92 in)
Driver dia.1,600 mm (62.99 in)
Trailing dia.1,050 mm (41.34 in)
Length33,730 mm (110.66 ft)
Axle load20 t (20 long tons; 22 short tons)
Fuel typeCoal
Firebox:
 • Grate area12 m2 (130 sq ft)
Boiler pressure17 kgf/cm2 (1.67 MPa; 242 psi)
Superheater:
 • Heating area174 m2 (1,870 sq ft)
CylindersTwo, outside
Cylinder size740 mm × 810 mm (29.13 in × 31.89 in)
bore x stroke
Performance figures
Maximum speed70 km/h (43 mph)
Tractive effort320 kN (71,940 lbf)
Career
OperatorsSoviet Railways
LocaleSoviet Union
First run1935
Scrapped1960
DispositionScrapped
[1]

The SZD Class AA20 was a one-off experimental 4-14-4 steam locomotive constructed by the Soviet Union by Krupp and the Voroshilovgrad Locomotive Factory in 1934 for the Sovetskie Zheleznye Dorogi (SŽD).[2] Two locomotives were set to be built, but due to the construction of the railway's more powerful FD Class, only AA20-1 was built, leaving the second AA20 incomplete.

  1. ^ "AA-20". loco.skyrocket.de. Retrieved 10 December 2017.
  2. ^ Westwood, J. N. (2016-02-24). Soviet Locomotive Technology During Industrialization, 1928-52. Springer. ISBN 978-1-349-05011-6.

From Wikipedia, the free encyclopedia · View on Wikipedia

Developed by Nelliwinne