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As an example the CFM International CFM56-5A engine active clearance control uses HPC air for the HPTACC and fan bypass air for the LPTACC.Clearance control is managed by the engine FADEC which consists of an electronic control unit (ECU), an hydromechanical unit (HMU) and HP and LP ACC valves.
The F119 has dual-redundant full authority digital engine control , also referred to internally as Digital Electronic Engine Control (DEEC), supplied by Hamilton Standard and fully integrated into the F-22's vehicle management system, making the engine highly reliable, stall-resistant, and forgiving of rapid throttle inputs. [12]
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]
Reliability and maintenance costs were also drastically improved, and the engine incorporates a digital electronic engine control (DEEC). The -220 engine produces static thrust of 14,590 lbf (64.9 kN) in military (intermediate) power and 23,770 lbf (105.7 kN) afterburning, very slightly lower than the static thrust of the -100/200, but the -220 ...
FADEC also monitors a variety of data coming from the engine subsystems and related aircraft systems, providing for fault tolerant engine control. Engine control problems simultaneously causing loss of thrust on up to three engines have been cited as causal in the crash of an Airbus A400M aircraft at Seville Spain on 9 May 2015. Airbus Chief ...
The average engine stays on wing 13,500 flight hours before a shop visit (a Shop Visit Rate of 0.073 per thousand hours). It is claimed to be cumulatively 3.4 dB quieter than other engines in its class. [1] Like other modern aircraft power plants, it has a Full Authority Digital Engine Control (FADEC), for better fuel economy and reliability. [4]
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 ...
The powerplant first flew on the C-17 in 1991. Still maintaining the F117 engine for the U.S. military, Pratt & Whitney received a $5.5 billion contract modification in June 2023 for engine sustainment in San Francisco, California; Columbus, Georgia; and Tinker Air Force Base, Oklahoma, through September 2027. [7]