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Recent content by jx_

  1. J

    Table 1505

    a better name is simply Engine RPM rate of change per CN2
  2. J

    Table 1505

    sigh. You're making up stuff. That is no where near the formula for CFF and table 1505 has no effect whatsoever on anything fuel related.. That is not what the table is trying to do. I think you are failing to understand what a CFF table is in the first place. Just because you reverse...
  3. J

    Table 1505

    and CN2 is driven by throttle position. If the engine is on and you set throttle position to 0 CN2, the stupid sim will maintain that RPM and burn ZERO fuel, while COMBUSTION = 1
  4. J

    Table 1505

    Your interpretation of 1505 is incorrect. These tables are designed based on a real world charting system. All 1505 was intended to do was give the corrected (SSL) fuel flow of the engine, which would allow you to determine exact fuel flow at an altitude or speed per RPM. They couldn't get it...
  5. J

    Creating a realistic flight model

    nutshell: Use real coefficients, geometry, and weight & balance. Put them in the correct fields in the airfile. Tweak video game controller to simulate the feel of the real controls. Done
  6. J

    Is it possible to have a 1 minute start up time?

    table 1505. the throttle will be ineffective until the spool up completes. this can be set from infinite (the ignition will never spool), to instant. No need to use the start up sound if you know what you're doing, otherwise, yes you need a longer file.
  7. J

    Boeing 747 NASA Corrected Net Thrust - Where am I going wrong?

    @Heretic Performance charts are 0% theoretical!!! The charts are demonstrated values only! The whole point of the generalized system is "ALL TEMPERATURE, ALL ALTITUDE". Please don't suggest people try to fudge it to fit one flight regime! It just leads to more badly made airplanes. The...
  8. J

    Cruise table

    Yes that's the one AFSD. Thanks
  9. J

    Cruise table

    What's the name of that tool that can show you live coefficients? I've used it but forget the name.....great tool for this stuff. It takes all the FS airfile data and converts it correctly into coefficients the sim is using.
  10. J

    Cruise table

    the same as you would anywhere. coefficient of drag after adding induced drag, parasite drag, and all other drag together. CDqS gives the thrust you need at cruise.
  11. J

    P3D v4 Drag in relation to weight

    I already explained it. Garbage in Garbage out. The sim uses the correct math for everything I have checked. ACES screwed up on inter-dependencies and static coefficients such as not adding the lift from Lift v Mach to the induced drag equation; and ground friction. The fuel Flow is...
  12. J

    P3D v4 Drag in relation to weight

    Never said that...for the weight stations to give accurate MOI the body MOI needs to be set correctly. Otherwise one or the other overpowers. This will also affect performance causing questions such as "why are my control surfaces too sensitive when I use the real coefficients?"
  13. J

    P3D v4 Drag in relation to weight

    no, it's garbage in garbage out. The air file MOI are wrong. FS uses the same equation that is used in real world FD.
  14. J

    P3D v4 Drag in relation to weight

    yes, ideally. I'm no expert on the coding but maybe simconnect can do it by modifying the drag coefficient directly.
  15. J

    P3D v4 Drag in relation to weight

    "the lack of official information (FSX or P3D) on the use of the .air file allows interpretations " These interpretations ARE the problem. I'm almost certain your jet suffers from excessive thrust. There is an exact amount of thrust that must be produced for a given climb rate because level...
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