Re: [Flightgear-devel] Willfully violating Google Terms of Use under the FlightGear umbrella ?

2012-03-12 Thread Andreas-Z
Hi, I'm the one who asked about the legal situation of using elevation data from a topographic map. http://www.flightgear.org/forums/viewtopic.php?f=5&t=15711&p=152972&sid=0383829e2324ecb1bc0c0ed67655e826#p152945 I checked with the institution that provides these maps and they said they're _no

Re: [Flightgear-devel] Negative-drag-bug in 20 aircraft models

2010-02-23 Thread Andreas-Z
>>I'm currently maintaining the 737-300, and it has this issue as well but I >> wonder if a fix might make the model worse. >> Though it comes much closer to the Vr, it needs plenty of force on the elevator >> to rotate and lift off. And with that bug fixed I fear it will getting worse >> th

Re: [Flightgear-devel] Negative-drag-bug in 20 aircraft models

2010-02-20 Thread Andreas-Z
>>just a "quick" fix like this can break an aircraft if it was "tweaked" to fly correctly with this bug. Okay... but if a model is tweaked this way, that would mean that the tweaking only is active when the yoke is pulled back... so there couldn't be a correct level-flight, which is a more impor

[Flightgear-devel] Negative-drag-bug in 20 aircraft models

2010-02-19 Thread Andreas-Z
Hi everyone! I think I found a little bug in a couple of JSBSim-aircraft: The property /fdm/jsbsim/aero/coefficient/CDde  (Drag_due_to_Elevator_Deflection) takes negative values when the elevator moves up, so the elevator face is accelerating the plane. The wrong code is found in the .xml file: