• 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.

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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 force) and turning moments (pitch, roll, yaw). It describes the relevant parameters and summarizes the findings in text, formulas and tables.

This paper is intended as an addition to the MS SDK. The findings are all based on many flight tests in FS2004, FSX and P3D.

The target audiences are FDE designers of add-on planes who already have some basic knowledge about the modeling of flight dynamics in MSFS such as stability derivatives.

Version 1.0 covers:

- Aircraft reference points
- Weight & Balance (MAC calculation, Moments of Inertia)
- Aerodynamic forces (lift, drag, side force) and propulsion forces (thrust)
- Aerodynamic moments (pitch, roll, yaw) and propulsion forces (thrust and propeller effects)
- List of aircraft.cfg and AIR-file parameters (marking the inactive ones)

This is freeware. Please read the document for legal notes and credits.
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An incredibly useful document, full of details and explanations.
Useful stuff, thanks very much!
A must have document! Thank you.
What an awesome resource Yves! Thank you for educating me (us) in the inner world of Flight Dynamics!