Object Details
Manufacturer
Pratt & Whitney
Physical Description
Type: Turbojet
Thrust: 75,600 N (17,000 lb)
Compressor: 16-stage, 2 spool axial
Combustor: Cannular
Turbine: Single-stage high pressure and 2-stage low pressure axial
Weight: 2,277 kg (5,020 lb)
Summary
The Pratt & Whitney J75 was first announced in 1954. It was developed from Pratt & Whitney's J57 engine with similar component arrangement, but having entirely new design features emphasizing weight control, and resulting in significantly lower specific weight. Production began in the spring of 1957, and both afterburning and nonafterburning versions were produced. The commercial version of the J75, known as the JT4, was certificated in March 1957.
The J75 powered the first U.S. operational Mach 2 fighter-interceptor, the Convair F-106 Delta Dart, and the Republic F-105 Thunderchief fighter-bomber, Lockheed U-2A reconnaissance aircraft, and North American F-107A. The JT4 was used on the Boeing 707-220/-320 and the McDonnell Douglas DC-8-20/-30 airliners. This J75-P-2, powered the Martin P6M-2 Seamaster flying boat.
Credit Line
Transferred from the U.S. Navy, Naval Supply Center, Cheatham Annex, Williamsburg, Virginia
Date
1957
Inventory Number
A19700094000
Restrictions & Rights
Usage conditions apply
Type
PROPULSION-Turbines (Jet)
Dimensions
Length 481 cm (189.2 in.), Diameter 109 cm (43.0 in.)
Country of Origin
United States of America
See more items in
National Air and Space Museum Collection
Data Source
National Air and Space Museum
Link to Original Record
Record ID
nasm_A19700094000