Russian locomotive class IS

Soviet locomotive class ИС

Locomotive IS20-16, 1937.

Steam locomotive IS20-16 with streamline casing at the Voroshilovgrad factory in 1937. It was the Soviet steam locomotive-champion with maximum speed of 180 km/h (110 mph).
Type and origin
Power type Steam
Builder October Revolution Locomotive Factory (Voroshilovgrad)
Total produced 649
Specifications
Configuration 2-8-4
Gauge 1,524 mm (5 ft)
Leading dia. 1,050 mm (41.34 in)
Driver dia. 1,850 mm (72.83 in)
Trailing dia. 1,050 mm (41.34 in)
Adhesive weight 88 tonnes (87 long tons; 97 short tons)
Loco weight 133 tonnes (131 long tons; 147 short tons)
Firebox:
 • Firegrate area		 7.04 m2 (75.8 sq ft)
Boiler pressure 15 kgf/cm2 (1.47 MPa; 213 psi)
Heating surface 295.2 m2 (3,178 sq ft)
Superheater:
 ​
 • Heating area 148.4 m2 (1,597 sq ft)
Cylinders Two, outside
Cylinder size 670 mm × 770 mm (26.38 in × 30.31 in)
Performance figures
Maximum speed 115 km/h (71 mph)
Tractive effort 233.5 kN (52,490 lbf)

The Soviet locomotive class IS (Russian: ИС) was a Soviet passenger steam locomotive type named after Joseph Stalin (Russian: Иосиф Сталин). The contract design was prepared in 1929 at the V.V. Kuybyshev Locomotive Factory in Kolomna. The IS series locomotives were manufactured between 1932 and 1942.

Overview

The locomotive used the same cylinders and boilers as the FD series locomotives. However the IS steam locomotive had a 2-8-4 wheel arrangement.

Construction

The first steam locomotive was released from the Kolomna factory on October 4, 1932. In April–December a steam locomotive was tested on the October, Southern, and Ekaterinenskaya railways.

In 1936, production began at the October Revolution Locomotive Factory in Voroshilovgrad. In total, 649 IS steam locomotives were constructed. Later the series was renamed FDP (steam locomotive FD, passenger modification).

Use

These locomotives were used until 1972.

See also

Books

References

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