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=5t=15711p=152972sid=0383829e2324ecb1bc0c0ed67655e826#p152945 I checked with the institution that provides these maps and they said they're _not_

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 than now.

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 important

[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 model.xml