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  2. IAE V2500 - Wikipedia

    en.wikipedia.org/wiki/IAE_V2500

    The 22-blade fan of an A320's V2500-A1 Rolls-Royce based the 10-stage HP compressor on an 8-stage run in the RB401 in the mid 1970's followed by a 9-stage run in the RJ.500 . The V.2500 would use 10 stages, with the first 4 with variable stators, giving a pressure ratio of 20:1. [ 4 ]

  3. Propfan - Wikipedia

    en.wikipedia.org/wiki/Propfan

    A propfan, also called an open rotor engine, open fan engine [1] [2] or unducted fan (as opposed to a ducted fan), is a type of aircraft engine related in concept to both the turboprop and turbofan, but distinct from both. The design is intended to offer the speed and performance of a turbofan, with the fuel economy of a turboprop.

  4. International Aero Engines - Wikipedia

    en.wikipedia.org/wiki/International_Aero_Engines

    IAE International Aero Engines AG is a Zürich-registered joint venture aeroengine manufacturing company.. It was founded during 1983 specifically to develop an aircraft engine to address the 150-seat single aisle aircraft market, the V2500 turbofan.

  5. IAE SuperFan - Wikipedia

    en.wikipedia.org/wiki/IAE_SuperFan

    The fan diameter was expected to range from 108 to 118 in while having a bypass ratio of 18:1 to 20:1. Availability of the engine was estimated between 1992 and 1994. [1] In December 1986 the V2500 SuperFan was officially offered to Airbus as powerplant for the Airbus A340 being developed at that time. With that offer, more design details were ...

  6. AOL latest headlines, entertainment, sports, articles for business, health and world news.

  7. Turn pop-ups off or on in your browser - AOL Help

    help.aol.com/articles/disable-or-enable-pop-ups...

    Most modern browsers employ pop-up blockers to keep away the annoying ads or offers that can overwhelm your experience online. While this is often a good thing as it prevents malware and other programs from infecting your computer, it can also cause problems with legitimate sites like AOL Mail.

  8. ‘Superman’ trailer launches to ‘Over 250 million views,’ says ...

    www.aol.com/superman-trailer-launches-over-250...

    The live-action introduction to the new DC Universe got off to a massive start, according to James Gunn. The filmmaker announced on his social media platforms Friday that the “Superman” teaser ...

  9. Turbofan - Wikipedia

    en.wikipedia.org/wiki/Turbofan

    Pratt & Whitney VP technology and environment Alan Epstein argued "Over the history of commercial aviation, we have gone from 20% to 40% [cruise efficiency], and there is a consensus among the engine community that we can probably get to 60%". [53] Geared turbofans and further fan pressure ratio reductions may continue to improve propulsive ...

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