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The JT8D is an axial-flow front turbofan engine incorporating a two-spool design. There are two coaxially-mounted independent rotating assemblies: one rotating assembly for the low pressure compressor (LPC) which consists of the first six stages (i.e. six pairs of rotating and stator blades, including the first two stages which are for the bypass turbofan), driven by the second (downstream ...
Diagram of a typical gas turbine jet engine. Air is compressed by the compressor blades as it enters the engine, and it is mixed and burned with fuel in the combustion section. The hot exhaust gases provide forward thrust and turn the turbines which drive the compressor blades.
The HPT is redesigned to withstand slightly higher temperatures and includes aerodynamic changes. The HPC has been redesigned to 6 stages, down from 7. These changes aimed at reducing SFC by 2% and component durability three times higher. [30] F414-EPE "Enhanced Performance Engine" or "EPE", includes a new core and a redesigned fan and compressor.
The A320 engine, the PW1100G, had made its first static engine test run on November 1, 2012, [20] and was first tested on the 747SP on May 15, 2013. [21] The first flight of the Airbus A320neo followed on September 25, 2014. [22] The PW1100G engine achieved FAA type certification on December 19, 2014. [23]
In December 1980, Pratt & Whitney changed to a new naming system for its engines and the JT10D became the PW2037. The PW2000 is a dual-spool, axial air flow, annular combustion, high bypass turbofan with a dual-channel full authority digital engine control system. It was certified in 1984 as the first civilian FADEC-controlled aviation engine.
The JTF14 engine had been proposed for the C-5 Galaxy program but the production contract was awarded to the General Electric TF39. The engine's first test run took place in a test rig at East Hartford, Connecticut, with the engine's first flight in June 1968 mounted on a Boeing B-52 E which served as a JT9D flying testbed . [ 5 ]
The Pearl engine was developed in Dahlewitz from the BR700 with Advance2 technologies. [16] EASA certification was applied for on 28 February 2015. [9] It made its first ground run in 2015, type tests in 2016, and flight tests in 2017. [17] Six test engines logged over 6,000 cycles on 2,000 test hours. [18]
The Pratt & Whitney PW4000 is a family of dual-spool, axial-flow, high-bypass turbofan aircraft engines produced by Pratt & Whitney as the successor to the JT9D.It was first run in April 1984, was FAA certified in July 1986, and was introduced in June 1987.