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The Pratt & Whitney J57 (company designation: JT3C) is an axial-flow turbojet engine developed by Pratt & Whitney in the early 1950s. The J57 (first run January 1950 [ 1 ] ) was the first 10,000 lbf (45 kN) thrust class engine in the United States.
Turboprop, turboshaft and turbofan engines have additional turbine stages to drive a propeller, bypass fan or helicopter rotor. In a free turbine the turbine driving the compressor rotates independently of that which powers the propeller or helicopter rotor. Cooling air, bled from the compressor, may be used to cool the turbine blades, vanes ...
One XT57 (PT5), a turboprop development of the J57, was installed in the nose of a JC-124C (BuNo 52-1069), and tested in 1956. [3] [4]Rated at 15,000 shaft horsepower (11,000 kW), the XT57 was the most powerful turboprop engine in existence at the time, [5] and it remains the most powerful turboprop ever built in the United States. [2]
U.S. regulators are requiring immediate inspections and possible repairs to Pratt & Whitney engines on some Airbus passenger jets because of a manufacturing problem that could cause parts to wear ...
Eighteen C-135As (Boeing model number 717-157 [8]), powered by Pratt & Whitney J57 turbojets, were built. In later years, almost all were upgraded with Pratt & Whitney TF33 turbofan engines and wide-span horizontal stabilizers, and were re-designated C-135E.
Pratt & Whitney J57/JT3C 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.
Wizz Air Holdings PLC (OTC:WZZZY) has entered a new agreement with Pratt & Whitney, an RTX Corporation (NYSE:RTX) unit, to address ongoing engine issues with PW1100G-JM geared turbofan engines.
The Pratt & Whitney J52 (company designation JT8A) is an axial-flow dual-spool turbojet engine originally designed for the United States Navy, [2] in the 40 kN (9,000 lbf) class. It powered the A-6 Intruder and the AGM-28 Hound Dog cruise missile. As of 2021 the engine was still in use in models of the A-4 Skyhawk.