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  1. Roy Holmes

    Importing a section into another AIR file?

    Bill, 1204 to 1206 are obsolete. If you want to put another tail on an airplane in the sim it will have absolutely zero effect. The dimensions for tail surfaces are in the aircraft.cfg but they are largely eye candy. You can change their size and position and there is no effect in the sim...
  2. Roy Holmes

    Flat turns? Rudder with Zero Roll

    Bill, Use any airplane's flight dynamics and animate the whole model so that it stays flat in a turn, i.e if you bank 30 right, roll the body 30 left. Just don't ask me to test fly it. Roy
  3. Roy Holmes

    Flat turns? Rudder with Zero Roll

    Bill, The reason all those airplanes turn is that they bank. Turning is not just a question of controls. The rudder by itself does not create a turn, it creates a yaw. That means the airplane is pointing away from the direction it is going. If it has some natural directional stability caused...
  4. Roy Holmes

    Flat turns? Rudder with Zero Roll

    Bill, Your wing appears to be fitted with no aerodynamic surfaces to make it fly in any particular direction, it would have no directional stability as depicted. That means it would be totally uncontrollable in the conventional sense. Any yaw from using your Yaw Thrusters would set it rotating...
  5. Roy Holmes

    Mouse Controlling Ailerons and Rudder; Dual Mouse-Drag

    You realize that centering the controls does not always cause the airplane to fly level. That will only happen if the trim settings are correct. Since you make no mention of trim you will only fly level by good fortune or sly cunning. Roy
  6. Roy Holmes

    RMPC: How to call up a Mini Map in GPS

    In the SSW Tornado Remote Projected Map Display (RPMD), the original concept had you load layers for each map location (square). The layers were Airports, Base, Geometries and Navaids. Base was a topographical using Open Street Map. Geometries was controlled airspace. The result was not bad but...
  7. Roy Holmes

    Turboprop engine tuning

    Smaller spools slower Roy
  8. Roy Holmes

    Turboprop engine tuning

    I did a few runs to get the direction best suited to slow spool up and a couple more to improve it and ended up with: fuel_flow_gain.0 = 25.0, 0.0001 fuel_flow_gain.1 = 35.0, 0.001 fuel_flow_gain.2 = 50.0, 0.005 fuel_flow_gain.3 = 65.0, 0.01 If the 25% value was much less than 0.0001 combustion...
  9. Roy Holmes

    Turboprop engine tuning

    I have yet to see any examples of how that can be done. If you found it easy maybe you could share how you did it? The C-2/E-2 are not exclusive to P3Dv4.3 so the reported fix would not be appropriate, but I did try briefly and found it not very effective. I probably did not spend enough time...
  10. Roy Holmes

    Turboprop engine tuning

    Tom, My task with the C-2 was to develop the flight dynamics and match the Manual performance figures as close as possible. That involves setting up the engines to give the appropriate performance and creating reasonable behaviour as far as flying it is concerned. With the turboprop that...
  11. Roy Holmes

    Turboprop engine tuning

    Tom, I fully appreciate you speaking the truth as you see it. As I see it, compared to the standard model, controlling the mixture has halved the start-up and ground idle/taxi instability which was the first thing I mentioned as a widespread complaint about turboprops in the sim. That was just...
  12. Roy Holmes

    Turboprop engine tuning

    Tom, I think what you are saying is that it is not possible to model all the variants of TurboProp using the basic, single sim version. I agree. T However I was not trying to do that, I just had one engine type to consider and worked on that with some success. I did start with XML Tools while I...
  13. Roy Holmes

    Turboprop Beta Range

    The Low Speed Idle setting I described above will give you some deceleration, but reverse thrust works very well. I was getting 1600 lbs reverse propthrust per engine in the C-2. That would stop it and it would back up some. Roy
  14. Roy Holmes

    Turboprop engine tuning

    Part 1. Start up issues. Just about everyone complains about the awful starting behaviour of the sim Turboprop engine model. Tales of airplanes tearing across the countryside because the parking brake was off on start are legion. Noble efforts have been made to fix the problem, most noticeably...
  15. Roy Holmes

    Table 1505

    https://www.fsdeveloper.com/forum/resources/fs-thrust-vs-altitude-calculations.43/ Roy
  16. Roy Holmes

    Table 1505

    Turboprops are quite different than turbojets/fans in the sim. First, N2 is not controlled by the throttle, it is controlled by the prop constant speed mechanism N1 is not a function of N2, it is controlled by the throttle or PLA. On start up the big overshoot of power is mainly a function of...
  17. Roy Holmes

    Turboprop Engine power

    Pat, That is the relationship between HP and torque. What governs the prop thrust in pounds is propeller efficiency. You can have great torque but if your prop efficiency is low, you will have low thrust, simple as that. Efficiency varies with airspeed and pitch, it is a complicated process...
  18. Roy Holmes

    Turboprop Engine power

    Turboprop thrust is really unimportant and small. What drives the thing is prop thrust. That comes from shaft horsepower, torque and propeller efficiency and there is not a direct relationship between thrust and SHP. So you cannot simply convert between them. Roy
  19. Roy Holmes

    FSX Starter motor jerking frenzy

    P3D V4.2 Ctrl shift E is attach/detach avatar. So it is probably that rascal who is causing all the problems. Roy
  20. Roy Holmes

    FSX Starter motor jerking frenzy

    OK then all you need to do is get the power up by 20% without using the scalar. What says you need the extra 20% power, is it lack of performance at full power. If so you should fix that, not just increase power throughout the RPM range. Roy
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