Recent content by johnor999

  1. J

    Table 1505

    No the document has not been released yet due to RL-stuff. I will most likely not include much guidance on how to fine tune the engine spool behavior and just focus on how engine spool works in the sim just to get the document released soon-ish. It will be up to someone else to take the...
  2. J

    Discrepancy between ADE and Google Earth

    Manually via Google Earth by placing a placemark, then opening the placemark to get the latitude and longitude. For now the pair of coordinates only represent two locations. They have nothing to do with imagery of any kind.
  3. J

    Discrepancy between ADE and Google Earth

    I really appreciate the in-depth detail of your replies regarding the imagery. Are the following statements correct? The distance between N63.798411, E020.268956 and N63.782811, E020.30142 should not be the same in both Google Earth and ADE because they don't use the same projection...
  4. J

    Discrepancy between ADE and Google Earth

    Hm... okay. If we ignore the background images completely for now, what you are saying is that if I take a set of coordinates from Google Earth, these coordinates would be wrong in ADE at high latitudes?
  5. J

    Discrepancy between ADE and Google Earth

    Hello, I noticed that I couldn't make a runway fit properly against my background images. It's as if the scale is wrong somehow. To test this, I placed two nodes at coordinates N63.798411, E020.268956 and N63.782811, E020.30142. After that I measured the distance between those two nodes in ADE...
  6. J

    Table 1505

    I'll see what I can do. The equations for RPM are beyond the scope of the document (and my knowledge) and because of shaft friction, RPM affects torque spool up. I'll still provide the equations for torque though, but without the RPM equations. The sad part about torque is that there's a...
  7. J

    Table 1505

    It comes from the air-files. The table data blocks found in air-files always contain the following information: ID (4 bytes) Size (4 bytes) Data (varying size) The sim uses the ID to figure out what table is what. 0x154B is the ID that asm2air.exe assigns to AIR_P3DV440_CORRECTED_N1_FROM_FF...
  8. J

    Table 1505

    I'm still working on the document. Let there be no mistake - it will be released. I just want to avoid as many silly mistakes as possible so I'm currently retesting all of the equations in all situations I can come up with.
  9. J

    Table 1505

    That's the table I'm referring to. TOKEN_BEGIN AIR_P3DV440_CORRECTED_N1_FROM_FF is the token for table 154B. It fills the exact same purpose as 1505 but the input is CFF instead of CFF/static_thrust. That table is hardcoded (but with slightly different values) in all sim versions prior to v4.4...
  10. J

    Table 1505

    Technically, they didn't specifically say that it replaced that table so no they are not wrong. They only said that you could have more than one fuel_flow_gain: The only way to override the hardcoded table is to use 154B in P3Dv4.4 and newer. Prior to 4.4, it was completely impossible to...
  11. J

    Table 1505

    That's not the table(s) I'm talking about. That's fuel_flow_gain.n and means that you can make fuel_flow_gain vary with CN1/CN2 (depending on turboprop or jet). This has nothing to do with the hardcoded "1505" table used by turboprops to calculate a new target CN1 based on CFF. That table can...
  12. J

    Table 1505

    Are you sure? I know about table 154B but that's found in the .air-file, however I can't find anything like that in aircraft.cfg while browsing the P3Dv4 SDK. fuel_flow_gain.n can be set in the aircraft.cfg file though.
  13. J

    Table 1505

    I have reviewed pretty much everything and there's one thing I'm not entirely sure about. The turboprop CN1 calculation uses a hardcoded 1505 equivalent. I've managed to get a hold of that table through experimentation for both FSX and P3Dv4.4 (which now also supports custom ones) The question...
  14. J

    Table 1505

    I'm thinking I might expand the document to also cover turboprops and helicopters. Both use the turbine system and engine spool for the turbine itself works the same way more or less. The difference is that CN1 is used instead of CN2 and of course that the 1505 table is hardcoded. I will not...
  15. J

    Table 1505

    I'm working on a document where all of my findings will be included. I will also provide an Excel-sheet with measured CN2 values from the sim compared to calculated ones.
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