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FSX Acceleration AIR file

No idea if this is allready know but the FA-18 of FSX Acceleration introduces two new sections in the AIR file. I was able to decode one section: Table 154a

Table 154a is a new and more fexible table for the wave drag or mach drag and replaces the old table 430. The table is still limited to Mach 3.2 but and allows to design a more accurate Wave Drag curve.

aam_tab_154a1.gif


This may be of interest for all the people who develope fast movers. But caution: FSXA AIR files are not compatible with FSX.

Section 1549 is for me at the moment a big mistery. Perhaps can someone help decoding this section.

A little bit more details about this things are on my (German) blog: http://ootb.wordpress.com/2008/07/06/fsxa-aam-1/

Furhtermore I have published an updated AAM.INI on my webpage www.fsdossier.info. With the new INI files you can see and edit Tab 154a. The table is at the very beginning of the section list.
Direct download: http://www.fsdossier.info/files/aam.ini

My apologise if this was allready know.
 
it's very interested, first time I noticed this.
Thanks.

And I have the question about the INI file, can I using it with airedit?:p
 
Sergio:

Perhaps you didn't notice (I noticed it only today), but in the ESP SDK there is at last some documentation related to the AIR files. The mentioned SDK can be read at http://msdn.microsoft.com/en-us/library/cc526961.aspx .

Try the JetSample.asm - apparently section 1549 is just what a nozzle animation table:

Code:
    ;Nozzle animation table and afterburner offset (if primary nozzle available)
    ; The output is the percent open of the primary nozzle (max 1.0)
    TOKEN_BEGIN    AIR_10XPACK_N1_MACH_ON_NOZZLE

        FLOAT32 0.30 ;Offset due to afterburner state

    ;Exhaust nozzle table  (max 4 rows, 3 columns)
    ;IN:  X: mach,
    ;IN:  Y: Corrected N1
    ;OUT: Primary Nozzle Pct open
    UINT32 4,3    ;ROWS,COLS
                 ;N1     M-lo   M-hi
        REAL8    0.00,  0.80,   1.05 
        REAL8   40.00,  0.55,   0.80 
        REAL8   65.00,  0.62,   0.85
        REAL8   96.00,  0.70,   0.90         
    TOKEN_END


Maybe you already knew about all that, but anyway it's here.


Rafael
 
Hi Rafael,

yes, I noted the ESP SDK and I allreday started the rewriting of the AAM.INI file from scratch. I hope it will take not to long to finish this work.
 
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