• Which the release of FS2020 we see an explosition of activity on the forun and of course we are very happy to see this. But having all questions about FS2020 in one forum becomes a bit messy. So therefore we would like to ask you all to use the following guidelines when posting your questions:

    • Tag FS2020 specific questions with the MSFS2020 tag.
    • Questions about making 3D assets can be posted in the 3D asset design forum. Either post them in the subforum of the modelling tool you use or in the general forum if they are general.
    • Questions about aircraft design can be posted in the Aircraft design forum
    • Questions about airport design can be posted in the FS2020 airport design forum. Once airport development tools have been updated for FS2020 you can post tool speciifc questions in the subforums of those tools as well of course.
    • Questions about terrain design can be posted in the FS2020 terrain design forum.
    • Questions about SimConnect can be posted in the SimConnect forum.

    Any other question that is not specific to an aspect of development or tool can be posted in the General chat forum.

    By following these guidelines we make sure that the forums remain easy to read for everybody and also that the right people can find your post to answer it.

Search results

  1. Y

    MSFS Change default aircraft flight dynamic

    You can reload the aircraft while the sim is running in the Developer Mode (first set it to ON under GENERAL -> DEVELOPERS). Back in the normal flight there appears a new menu line. Under[DevMode] I had to set a new project. Under Tools the Aircraft Editor became available then. Now you can make...
  2. Y

    Coefficient of drag

    Hello Johan, you are right, some of the CD parameters, CDβ, CD_dr, CDr and CDp, are not explained in my documentation. I could not quantify them. I am not sure right now, what my excact thoughts were when I put them in the CD_total equation. They cannot be adjusted in the air-file. So, just...
  3. Y

    Need help with interpretation

    Hi everyone, thanks for studying my documentation in such detail. Let me first try to clarify the formula on page 23, so we can discuss a way to mathematical depict it in a more correct way. The result of the formula is a dynamic value which depends on the static values of R1539 + R410 and...
  4. Y

    Flight Dynamics in MSFS V1.0 2016-03-02

    This PDF-document gives a deeper view at the flight dynamics model incorporated in Microsoft Flight Simulator 2004, FSX and Prepa3D. It mainly analyses the interactions between the parameters in the airplane configuration files (aircraft.cfg and *.air) with focus on forces (lift, drag, side...
    • Yves_G
    • Resource
    • fde flight dynamics flight model fs2004 fs9 fsx p3d stability derivatives
    • Category: Aircraft design
  5. Y

    FSXA min_flaps_for_spoilerons

    Good to hear that it worked! :) I have no idea why MS made that condition depending on leading edge and not trailing edge flaps.
  6. Y

    FSXA min_flaps_for_spoilerons

    Hi, min_flaps_for_spoilerons is in radians, not handle position as the SDK and the original comments in the aircraft.cfg say. The parameter refers to the angle position of the leading edge flaps-set (type=2) with the lowest [flaps.x] sequence number. If there is no type=2 leading edge flaps-set...
  7. Y

    FSX Sim1.dll in FSX?

    Hi Steven The offsets and data structure for surface parameters are different in FS9 and FSX. I created an Excel sheet that lists all the offsets for both simulators. In FSX there are three new scalars on the two friction coefficents which are applied for rain, snow and ice. This means in...
  8. Y

    FSX Flight Model Documentation Available

    FS9/FSX Flight Model Documentation Hi everyone I've recently finalized and uploaded to AVSIM my documentation of the aerodynamic flight model of FS9 and FSX (and P3D). After several month of work it has become a 60-page paper which describes the aerodynamic parameters of the AIR-file and...
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