Maik Justus wrote: > Hi Vivian, > Vivian Meazza schrieb am 21.12.2007 00:11: > > Christmas has arrived slightly early! I've got something which: > > > > A. runs > > > > B. looks OK with limited testing > > > > The ballistic object aligns with the direction of flight in > pitch and > > heading with an external force applied. It would be > possible to align > > it with the direction of the external force, but I think that would > > need roll as well. I'm not sure which one would look best. > > > > The external force is defined in terms of: > > > > Magnitude (lbf) > > Azimuth (deg, North = O) > > Elevation (deg, up = 90) > > > > In a user-defined property. Of course, some external > program needs to > > set the external force data. > > > > This all now needs testing in a more realistic environment. I'm not > > totally convinced that the ballistic object won't disappear into > > space/to the centre of the earth, or oscillate like a > deranged spring. > > > > Vivian > > > Thank you for the enhancement of AIBallistic. The external load works > here, but not perfectly. I need to limit the force to approx > 1000 lbf > (which is not enough to simulate it properly). If I do not limit the > force, the load (the 3d-model) disappears, but it is still in the > property tree and reacts on forces (maybe not correct, not > sure, but it > is still there). Any idea, what could cause this? >
Hmm - the mass of the load in load_demo is only 170 lbs - applying 1000lbf could well send it into orbit! Note your mass is in slugs, and you need a realistic Cd and eda. I _think_ the math is correct, but I'll look at it again Vivian ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
