Westinghouse 501D Gas Turbine


Dublin Core


Westinghouse 501D Gas Turbine

Alternative Title

Westinghouse 501D Turbine


Energy--United States


A drawing of the internal design and construction of Westinghouse Electric's 100 MW-class Westinghouse 501D (W501D) gas turbine, which was the first to operate at 2000F rotor inlet temperature in 1975. This design included a generator drive feature, original with Westinghouse and later adopted by others. This is ideal for heat recovery applications and avoids the need for a high-temperature flexible drive coupling in the exhaust end, which is characteristic of earlier designs of others. Also, the two-bearing rotor design avoided the need for a high-temperature center bearing buried in the hot section of the engine, which was also characteristic of earlier designs of others. Westinghouse gas turbines featured their patented tangential exhaust casing struts designed to maintain rotor alignment.

Originally called the Westinghouse Electric Company, George Westinghouse (1846-1914) founded his manufacturing company in Pittsburgh, Pennsylvania, on January 8, 1886. In 1889, he renamed his business The Westinghouse Electric and Manufacturing Company. Westinghouse's primary products include turbines, generators, motors and switchgear related to the generation, transmission, and use of electricity. The company changed its name to Westinghouse Electric Corporation in 1945. In 1981, the company began to relocate its division headquarters for the Steam-Turbine Generator Divisions from Pennsylvania (turbines from Lester and generators from Pittsburgh) to Orlando, Florida. The Power Generation Business Unit (PGBU) building was located in The Quadrangle, at 4400 Alafaya Trail. Originally, Westinghouse had purchased a large plot of land for future development that extended westward from Alafaya Trail to Rouse Road. The original headquarters was located on several acres of that land parcel close to Alafaya Trail.

As the PGBU grew in size, other buildings were rented and then, after PGBU was sold to Siemens Corporation, additional buildings were added to the complex. In 1994, after a major corporate management shuffling and commitment to change from an industrial manufacturing company to primarily a broadcasting/communications company, Westinghouse bought the CBS Network and changed its name to the CBS Corporation. As the PGBU grew in size, other buildings were rented and then, after PGBU was sold to Siemens Corporation in 1998, additional buildings were added to the Quadrangle.


Original color drawing: Private Collection of Harry L. Jaeger.

Date Created

ca. 1975


Jaeger, Harry L.

Is Format Of

Digital reproduction of original color drawing.

Is Part Of

Westinghouse Electric Collection, RICHES of Central Florida.




449 KB


1 color drawing


Still Image


South Philadelphia Works, Lester, Pennsylvania

Accrual Method



History Teacher
Science Teacher

Rights Holder

Copyright to this resource is held by Harry L. Jaeger and is provided here by RICHES of Central Florida for educational purposes only.


Jaeger, Harry L.
Cepero, Laura

Digital Collection

External Reference

"History." Westinghouse Nuclear. http://www.westinghousenuclear.com/About/History.
"Westinghouse Power Generation Booklet." RICHES of Central Florida. https://richesmi.cah.ucf.edu/omeka2/items/show/6422.


“Westinghouse 501D Gas Turbine,” RICHES, accessed May 25, 2024, https://richesmi.cah.ucf.edu/omeka/items/show/7722.