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Why doesn't PMDG use an external engine model to work around the limitations of the MSFS one?

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    Why doesn't PMDG use an external engine model to work around the limitations of the MSFS one?

    A few developers like FBW and Fenix have implemented or are developing a custom external engine model because the one in the sim doesn't allow for enough accuracy. I guess that's the reason why neither of them will ever come out for Xbox. Why hasn't PMDG done so given there are limits to what can be achieved without it? Is it because they want to bring it out for Xbox as well?
    Mark Tegge

    #2
    Originally posted by meurkel View Post
    A few developers like FBW and Fenix have implemented or are developing a custom external engine model because the one in the sim doesn't allow for enough accuracy. I guess that's the reason why neither of them will ever come out for Xbox. Why hasn't PMDG done so given there are limits to what can be achieved without it? Is it because they want to bring it out for Xbox as well?
    Specifically, what things lack the accuracy that you are referring to? AFAIK PMDG does use external code to an extent but if others are using custom external engine models wholly external to the platform, how does the platform propel the aircraft?
    Dan Downs KCRP
    i7-10700K 32GB 3600MHz 3080Ti

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    • meurkel
      meurkel commented
      Editing a comment
      All I know is that they can't get the engine spool up behavior right because the MSFS engine model is too limiting. Fenix are also still using the default engine model which is why the fuel consumption deviates 20% from the real plane. I don't know how it connects with the sim. All I know is the MSFS model is limiting so using a custom model would allow for more accuracy. However, it may also be that Asobo is working on improvements. My question is simply why PMDG have decided not to use an external model?

    #3
    I can't speak for PMDG, but my understanding is that the performance of the 737 is within just a few percent of the real aircraft. A significant portion of PMDG's aircraft already use custom coding as well, so they may already have customized the engine behavior.
    Tim Lincoln
    My YouTube Channel

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    • meurkel
      meurkel commented
      Editing a comment
      The performance values are fine. I'm specifically talking about the engine spool up behavior which has been pointed out by many real world pilots. You can't do a takeoff config check as quite a few airlines do because the engines have spooled up to 60 percent by the time the horn sounds. Now I've heard that PMDG tried really hard to make this more realistic but it wasn't possible with the sim engine model. If they used an external engine model they wouldn't have that limitation. I'm just curious to know why they decided not to take that path?

    #4
    Mark, thank you for providing a specific. True, this has been discussed but I'm not aware of anyone actually writing it up and submitting it to support. They probably can do it but are not going to assign limited resources to something only a very small percentage of users even notice. So best thing is to get it the bug tracking system.
    Dan Downs KCRP
    i7-10700K 32GB 3600MHz 3080Ti

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