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2. Rolls-Royce Trent 500 - Wikipedia

   en.wikipedia.org/wiki/Rolls-Royce_Trent_500

   The Rolls-Royce Trent 500 is a high-bypass turbofan produced by Rolls-Royce to power the larger A340-500/600 variants. It was selected in June 1997, [ 1 ] first ran in May 1999, [ 2 ] first flew in June 2000, and achieved certification on 15 December 2000. [ 3 ]

3. Fan (machine) - Wikipedia

   en.wikipedia.org/wiki/Fan_(machine)

   A household electric fan A large cylindrical fan. A fan is a powered machine that creates airflow. A fan consists of rotating vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner. Usually, it is contained within some form of housing ...

4. Ducted fan - Wikipedia

   en.wikipedia.org/wiki/Ducted_fan

   In aeronautics, a ducted fan is a thrust-generating mechanical fan or propeller mounted within a cylindrical duct or shroud. Other terms include ducted propeller or shrouded propeller . [ 1 ] When used in vertical takeoff and landing ( VTOL ) applications it is also known as a shrouded rotor .

5. CFM International CFM56 - Wikipedia

   en.wikipedia.org/wiki/CFM_International_CFM56

   By October 2017, CFM had delivered more than 31,000 engines and 24,000 were in service with 560 operators, it attained 500 million flight cycles and 900 million flight hours, including over 170 million cycles and 300 million hours since 1998 for the B737NG's -7B and over 100 million cycles and 180 million hours for the A320ceo's -5B since 1996 ...

6. Turbofan - Wikipedia

   en.wikipedia.org/wiki/Turbofan

   BPR can also be quoted for lift fan installations where the fan airflow is remote from the engine and doesn't flow past the engine core. Considering a constant core (i.e. fixed pressure ratio and turbine inlet temperature), core and bypass jet velocities equal and a particular flight condition (i.e. Mach number and altitude) the fuel ...

7. Specific fan power - Wikipedia

   en.wikipedia.org/wiki/Specific_fan_power

   In reality the fan system efficiency is often in the range 0 to 60% (i.e. <); it is lowest for small fans or inefficient operating points (e.g. throttled flow or free-flow). The efficiency is a function of the total losses in the fan system, including aerodynamic losses in the fan, friction losses in the drive (e.g. belt), losses in the ...