Union Pacific GTELs

Specifications
Specifications
Configuration:;
• AAR	B+B-B+B 1st & 2nd Generation; (C-C)+(C-C) 3rd Generation
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Trucks	4
Length	83 ft 6.5 in (25.464 m) (Prototype)
Loco weight	500,000 lb (230,000 kg) Prototype; 552,000 lb (250,000 kg) 1st Generation; 849,212 lb (385,196 kg) for 3rd Generation
Fuel type	Bunker C heavy fuel oil (UP 57 used compressed propane fuel from May 1953 to January 1954)
Prime mover	GE 5-Frame Gas Turbine 3rd Generation
Engine type	Cummins 250 hp (190 kW) "donkey engine" 1st and 2nd generation. Cooper Bessemer 850 hp (630 kW) 3rd Generation.
Traction motors	GE 752E1 1st and 2nd Generation, GE 752E3 3rd Generation.
Safety systems	Twin Leslie Tyfon A-200 air horns 1st & 2nd generation. Leslie S-5T-RF air horn 3rd generation.

Type and origin
Type and origin
Power type	Gas turbine–electric
Builder	Alco-General Electric (1948–53); General Electric
Model	GE 101 1948 Demonstrator Prototype
Build date	January 1952 – June 1961 (production)
Total produced	55

Union Pacific GTELs
Union Pacific GTELs
	Union Pacific 18, a third-generation GTEL with four three-axle "C" trucks, preserved at the Illinois Railway Museum
Power type
Type and origin
Power type	Gas turbine–electric
Builder	Alco-General Electric (1948–53); General Electric
Model	GE 101 1948 Demonstrator Prototype
Build date	January 1952 – June 1961 (production)
Total produced	55
Configuration:;
Specifications
Configuration:;
• AAR	B+B-B+B 1st & 2nd Generation; (C-C)+(C-C) 3rd Generation
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Trucks	4
Length	83 ft 6.5 in (25.464 m) (Prototype)
Loco weight	500,000 lb (230,000 kg) Prototype; 552,000 lb (250,000 kg) 1st Generation; 849,212 lb (385,196 kg) for 3rd Generation
Fuel type	Bunker C heavy fuel oil (UP 57 used compressed propane fuel from May 1953 to January 1954)
Prime mover	GE 5-Frame Gas Turbine 3rd Generation
Engine type	Cummins 250 hp (190 kW) "donkey engine" 1st and 2nd generation. Cooper Bessemer 850 hp (630 kW) 3rd Generation.
Traction motors	GE 752E1 1st and 2nd Generation, GE 752E3 3rd Generation.
Safety systems	Twin Leslie Tyfon A-200 air horns 1st & 2nd generation. Leslie S-5T-RF air horn 3rd generation.
Maximum speed
Performance figures
Maximum speed	65 mph (105 km/h) (according to GE tests).
Power output	4,500 hp (3,400 kW) 1st & 2nd Generation; 8,500 hp (6,300 kW) 3rd Generation
Tractive effort	138,000 lbf (610,000 N) 1st Generation; 212,312 lbf (944,410 N) 3rd Generation
Operators
Career
Operators	Union Pacific
Class	1
Number in class	55
Numbers	UP50 Demonstrator Prototype; 51–60 1st Generation; 61–75 2nd Generation; 1–30 3rd Generation
Official name	GTEL, Gas Turbine Electric Locomotive
Nicknames	"Verandas" 2nd Generation; "Big Blows" "Bird Burners" 3rd Generation
Locale	North America
Delivered	January 1952
First run	January 1952
Last run	December 1969
Retired	August 1963 – February 1970
Disposition	53 scrapped (running gear including trucks recycled for GE U50 and U50C), 2 preserved (non-operational)

The Union Pacific GTELs were a series of gas turbine–electric locomotives built by Alco-GE and General Electric from 1952 to 1961 and operated by Union Pacific from 1952 to 1970.