Tf-33-p-7 (c-141a/b) Aircraft Engine Parts

(Page 48) End item NSN parts page 48 of 51
Part Number
NSN
NIIN
2-033V0747-75 O-ring
001941670
2-033V1164-75 O-ring
001941670
2-033V1226-75 O-ring
001941670
2-033V747-75 O-ring
001941670
2-036V0747-75 O-ring
001727187
2-036V1164-75 O-ring
001727187
2-036V1226-75 O-ring
001727187
2-039 V747-75 O-ring
001668398
2-039V0747-75 O-ring
001668398
2-039V1164-75 O-ring
001668398
2-039V1226-75 O-ring
001668398
2-039V747-75 O-ring
001668398
2-039V884-75 O-ring
001668398
2-040 V747-75 O-ring
010063931
2-040V0747-75 O-ring
010063931
2-040V1164-75 O-ring
010063931
2-040V1226-75 O-ring
010063931
2-040V747-75 O-ring
010063931
Page: 48

Engine, Aircraft, Tf-33-p-7 (c-141a/b)

Picture of Tf-33-p-7 (c-141a/b)  Aircraft Engine

The Pratt & Whitney JT3D is an early turbofan aircraft engine derived from the Pratt & Whitney JT3C turbojet. It was first run in 1958 and was first flown in 1959 under a B-45 Tornado test aircraft. Over 8,000 JT3Ds were produced between 1959 and 1985. Most JT3D engines still in service today are used on military aircraft, where the engine is referred to by its USAF designation of TF33.

Aware of the competition from the Rolls-Royce Conway turbofan, Pratt&Whitney decided to develop the JT3D turbofan from the JT3C turbojet for later deliveries of the Boeing 707 and the Douglas DC-8, then nearing entry into service. A 2-stage fan replaced the first 3 stages of the 9-stage JT3C LP compressor. On the LP turbine, the second stage was enlarged and a third stage added.

Unlike GE with the CJ805-23, Pratt & Whitney had not undertaken any transonic fan research prior to designing the JT3D, so they were unable to incorporate a single stage unit into the specification. Instead P&W designed a 2-stage unit based on some research they had done to support the J91 nuclear turbojet.

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