lzamm

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About lzamm

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  1. lzamm

    QW 787 Autopilot Phugoid

    Just to split hairs, what you are seeing is not a phughoid but a limit cycle :) The phugoid is an aerodynamically driven oscillation, while the oscillations you are seeing are due to instabilities in a control system (the autopilot).
  2. lzamm

    Magnetic declination

    Depends if you want the RW value or what the sim thinks it is. Unless you've update the databases, the data is that issued with FSX's initial release, and the differences can be substantial. The simulation variable A:MAGVAR,degrees gives the sim's idea of the variation at the aircraft's current position. It should be possible to knock up an XML gauge to display this in a few minutes.
  3. lzamm

    C402 AP alt pitch

    FSX AP engages pitch mode with (>K:SYNC_FLIGHT_DIRECTOR_PITCH). I know it says flight director but with the AP engaged it follows the flight director, right? You can also use (>K:AP_ATT_HOLD_ON) but that also engages the wing leveller. You can then change the aircraft pitch with (>K:AP_PITCH_REF_INC_UP) and (>K:AP_PITCH_REF_INC_DN) .
  4. That's a nice airport and it runs well in P3DV4. Seems to be OK without the terrain addon as well, perhaps because I use FreeMeshX. You can install it to a dummy folder after creating a folder with an empty file called "fsx.exe" and using the Flight1 Registry Repair Tool to set up the registry entries. You can then either copy the files over to your P3D Addon Scenery folder (don't forget the file in Scenery\World\Scenery) or create an addon.xml file to run it from the dummy folder. And yes, the EULA is very restrictive but I don't think it stops you doing this on your system.
  5. lzamm

    737NG Duct Pressure

    IIRC the 30psi refers to older aircraft. The APU on the NG is demand driven and ramps up the air supply only when there is a demand for it, so the duct pressure does not rise off load. Found this: https://www.pprune.org/tech-log/154000-b737ng-minimum-start-pressure.html
  6. I'm not familiar with the radio stack coding, however if you want to pass the unrounded frequency to K:COM_STBY_RADIO_SET then you should remove the " 2 * 10 / flr 5 * " bit
  7. lzamm

    CaptainSim 757 Released!

    Including the PMDG defenders of the faith.. But since they all sing the same tune, perhaps they should stick to their sandbox.
  8. lzamm

    DM BAC 1-11

    That we did! Happy Christmas!
  9. lzamm

    DM BAC 1-11

    Patch is by Bjoern Kesten, available here I really like Dave Maltby's models, particularly his Trident. Pity his VC-10 never got a virtual cockpit.
  10. lzamm

    Add-On.xml Not Working

    What do you have in the SimObjects folder? If you have a folder called Airplanes which in turn contains the actual aircraft folder, then the simobjects entry in the addon.xml file has to point to the Airplanes folder (not the Simobjects folder).
  11. lzamm

    Interviews with D.P.Davies

    I have just come across a set of interviews with D.P. Davies, author of "Handling the Big Jets" and certification test pilot for many of the airliners we all love so much. I can't believe I've spent 4 solid hours listening to the first three - the wife had to pull the earphones off my head to get me down for dinner. The bits on the 707 and 747 are pure gold, and I have yet to listen to the one on Concorde. First seen via pprune, but I'm linking to the original site: https://www.aerosociety.com/news/audio-the-d-p-davies-interview-on-the-boeing-747-the-trident-vc10-one-eleven-the-boeing-727/
  12. lzamm

    Just Flight Vickers VC-10 released

    At the risk of having someone allege that climbing out on autopilot is not normal, does it have a real IAS mode (speed on elevator) or is it the usual MSFS autothrottle cop-out?
  13. lzamm

    CPU-GPU temperatures

    Most silicon-based devices are designed for a maximum junction temperature (Tj(max)) in the 100-105 deg.C range, and design rules are such that running continuously at this temperature gives a lifetime that is an acceptable number of years - typically about a decade. You really cannot speak about the "lifetime" of a chip as it is based on probability and statistics (google "bathtub curve"), but simplistically that's the point where the late-life defect rate starts to rise exponentially. The actual numbers vary from product to product, the testing regime applied, and the price the customer is prepared to pay. Given the activation energies of the commonest defects in silicon, a useful rule of thumb is that the lifetime halves for every 5 deg.C rise in temperature. In another life, I used to run chips in an oven at 125 deg.C with operating conditions tweaked to give a Tj of 150 deg.C, which is usually the highest temperature at which internal timing relationships and leakage currents are guaranteed. This gives an acceleration factor of about 1000 (2^10) and you typically start seeing the late-life failures in a couple of months. Basically you shouldn't see any reduction in lifetime if you run at or below 100 deg.C. There's no harm in taking a safety margin over that, but there's no need to overdo it either.
  14. lzamm

    IFly 747 FS2004 Small problem

    I don't believe the fs2004 ifly 747 simulates the irs startup, IIRC all you have to do is set the switches to nav. Captain only displays may be an electrical configuration issue (standby power?), do they come on when you start the engines? Been years since I played with this, probably wrong but there you go....