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Morten last won the day on January 16

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  1. Hi guy's, been a long time Regarding rotate feeling light, this is mostly an XP issue (at least in XP11 that i knew well). In short, the 737 has a supercritical airfoil (NASA term, or "aft loaded" airfoil as Boeing calls it). One of the differences between conventional and aft loaded airfoils is (as the name implies) that the aft loaded airfoils have the center of pressure further aft. Meaning also the center of lift is further aft than on a conventional airfoil. XP does not model this very well, and as far as I know has its center of lift at the 1/4 chord. So this means XP airliners have their center of lift too far in front which cause problems in the transition phase between ground and flight. Should be a fairly simple fix for Austin. There are some temporary "hacks" one can do, but it's a can of worms... Good to see the old girl in the XP12 skies - great work Jan and Tom
  2. Anyone made John Travoltas new toy yet?
  3. Morten


    Regarding speedbrake drag, it was calibrated using the real drag data from boeing. (Jan might have adjusted it later) It depends on Mach and Cl (aoa). Gives an increase in Cd between 0,011 - 0,014 in the normal envelope, so not much..
  4. An ancient X-Plane advice: Are you seeing odd behavior of any sort that you cannot explain - delete the XP prefs files
  5. ...and make sure you are using flattened airport terrain before making any judgements...
  6. On the contrary, lift increase starts at about one CHORD altitude were you need ease off on back pressure (after the flare/break). Pitch down effect starts about 70' agl. We have analyzed dozen's of real B733 landings based on real FDR data. Attach a sample of a few real B733 landings for you. As Jan says, we had these discussions with Austin many times and provided various documentation. So the combination of science, real data, NASA test data and Jan's extensive in type flying experience has given us the result we have today which is the best for any desktop sim.
  7. Maybe it has something to do with how you set up your trim? You using a keyboard key for that? Any other tasks (data refs) assigned to that same key maybe? Try configuring your controls again again, using another key..
  8. CG (e.g if far forward) will also affect pitch
  9. Hi guy's, rainy day here today so had some fun making an IXEG face for those of you that are using an android smartwatch and the Facer app. The fun part is the N1 fan is spinning My first attempt at this so let me know if it works ok https://www.facer.io/watchface/7cGemLBcC0
  10. Very interesting indeed. At this point it's a bit hard to say what exact impact it will have on flight model. Trim, controls, feel are likely to get affected which are not a big deal, but if it messes with total lift - which is likely - it will require a major overhaul.
  11. And with those words, we close this topic and wish everyone a nice weekend. The aircraft will get further updates, we apologize for the delay which is mainly a result of us doing this a as a hobby besides our "real" jobs.
  12. Well, there is a sharp line between criticism and insults. When someone tells you what you have been working hard on for 7+ years is worth nothing, that is an insult. It is all about choice of words. But as you say, those people who react in this way usually have had a difficult past/life or really bad day.
  13. And most of those we have been very open about. If things go as planned we will have an update ready later this year that will address a lot of VNAV stuff and more. You are off course entitled to your opinion. We have however thousands of very satisfied customers, and the IXEG is one of the most flown aircraft in X-Plane according to Laminar statistics (actually flight time). We have dozens of real 737 pilots flying it and reporting it to be overall the most realistic simulator aircraft they have ever flown! Can it be improved in some areas - off course - and it will be.
  14. Sure, just mention that it is based on the default one.
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