Bombardier unveils C series flight test aircraft

Discussion in 'Newsstand' started by milchap, Mar 8, 2013.  |  Print Topic

  1. milchap
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    milchap Gold Member

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  2. jbcarioca
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  3. milchap
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    If the aircraft performs close to the claims/assumptions made by Bombardier, it could indeed be a good candidate for short and medium haul flights.

    I do remember the naysayers on the introduction of the RJ series....and look at the result today. :cool:
     
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  4. jbcarioca
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    I would say "will be" or "is" rather than "could be". Considering how hard Airbus and Boeing are selling their products it is interesting how many orders Bombardier already has. Once they're certified I suspect they'll pick up a good many more orders. One key issue will be delivery slot availability. Their engines may be more available because they're the first to use them by a couple of years. The big question is whether the geared turbofan technology is sufficiently mature and robust for short haul high cycle operations. We will not know about that for a couple of years or so.
     
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  5. sobore
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    Who is making their engines?
     
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  6. milchap
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    I don;t know....let me see if I can find it
     
  7. milchap
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    Pratt & Whitney PW1000G
     
  8. jbcarioca
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    Sorry for not making the statement. The Pratt & Whitney geared turbofan (PW1500G for the Bombardier C series) is novel technology in two major respects. First the geared turbofan allows use of fewer stages, making the engine more compact and theoretically more efficient (there have been other GT engines) and second the novel high speed low pressure core section designed and built by MTU. The engine has been chosen for the Embraer E series reengining and is an option for the Airbus A320NEO, among others. Here is more:
    http://www.purepowerengine.com
    pw_geared_turbofan.jpg BWAttachment1075094-12.jpg
     
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  9. jbcarioca
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    The P&W advantages are less complexity, fewer stages, a very high bypass ratio, so quiet, and operating economy.

    The potential problems are gear complexity and gearbox reliability. The gear set, shown above, is under extremely stressful high temperature and pressure loads which have historically been big problems. Again, historically geared engines have been very sensitive to changes in power setting, especially sudden ones. They have also been acutely sensitive to lubrication and have had durability problems.

    Pratt & Whitney are confident they've cured the problems. MTU have a superior track record for high technology solutions and have the reputation of delivering well. They supply the high pressure solutions for the Eurofighter and the A400M among other things. Their military geared turbofan programs have given them lots of experience:
    http://www.mtu.de/en/technologies/future_technologies/technology_fields/index.html

    Now I am sure I have given you far more than you wanted to know about this technology.:D
     
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  10. milchap
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    I hope that they have good batteries. :D
     
  11. sobore
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    I knew we had the right person to give us an inside look!
     
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  12. sobore
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    Yes, they will be using the same ones you'll find in your watch. :eek::p
     
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  13. milchap
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    I agree.....jbc for president. :)
     
  14. sobore
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    He already holds a high ranking post with a organization known for the promotion of the white font. ;)
     
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  15. jbcarioca
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    They have the now classic ni-cad's. I do not know the supplier, but they have usually used Saft in the past, also the primary supplier for Airbus. BTW, Saft also supplies the Li-ion batteries for the A380 which have never had any incident at all.
     
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  16. milchap
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