Pratt & Whitney T34

The Pratt & Whitney T34 (company designation PT2 Turbo-Wasp ) was an American axial flow turboprop engine designed and built by Pratt & Whitney. Its only major application was on the Douglas C-133 Cargomaster.

Design and development
In 1945, the United States Navy funded the development of a turboprop engine. The T34 was produced from 1951 to 1960, but never used in U.S. Navy aircraft production.

The YT34 engine with three wide-bladed propellers was made for two Navy Lockheed R7V-2 Constellation (C-121s) variants, for testing. Flight tests were on 1 September 1954.

In September 1950, a testbed Boeing B-17 Flying Fortress flew with a T34 turboprop mounted in the nose of the bomber. The first application for the T34 was the Boeing YC-97J Stratofreighter, which later became the Aero Spacelines Super Guppy. The next application for the engine was the Douglas C-133 Cargomaster.

Variants



 * T34-P-1:5700 shp equivalent.
 * T34-P-2: Similar to -1.
 * T34-P-3:6000 shp equivalent.
 * YT34-P-5:5229 shp equivalent
 * T34-P-6:5531 shp equivalent
 * T34-P-7:
 * T34-P-7W:7100 shp equivalent, w/water injection
 * T34-P-9W:7500 shp equivalent, w/water injection
 * T34-P-12:
 * YT34-P-12A:5500 shp equivalent
 * PT2F-1:5500 shp equivalent, unbuilt civilian version planned to power the Lockheed L-1249B.
 * PT2G-3:5600 shp equivalent, unbuilt civilian version planned to power the Lockheed L-1449 and possibly the L-1549.

Applications



 * Aero Spacelines Super Guppy
 * Boeing YC-97J Stratofreighter (YT34-P-5)
 * Douglas YC-124B Globemaster II
 * Douglas C-133 Cargomaster
 * Lockheed R7V-2 Constellation (YT34-P-12A)
 * Lockheed YC-121F Constellation (T34-P-6)

Engines on display

 * T34-P-3: National Air and Space Museum (NASM) in Washington, D.C.
 * T34-P-6: Travis Air Force Base Heritage Center in Fairfield, California
 * T34-P-7W: NASM
 * T34-P-7WA: Pacific Coast Air Museum (PCAM) in Santa Rosa, California