On Thursday 10 February 2011 11:33:52 Geoff McLane wrote:
> >From what Henri said, it certainly seems possible
>
> that nasal is dickering with the "gear Z position
> (gear/unit/z-position) ...", or something, so more
> to explore here...
>
> I can see in c172p/Nasal/action_sim.nas that it,
> in the update_actions function, gets lots of gear
> related nodes like -
>
> var dhN_ft = props.globals.getNode("gear/gear[0]/compression-ft", 1);
> var dhR_ft = props.globals.getNode("gear/gear[2]/compression-ft", 1);
> var dhL_ft = props.globals.getNode("gear/gear[1]/compression-ft", 1);
> var propGear0 = props.globals.getNode("gear/gear[0]", 1);
> var propGear1 = props.globals.getNode("gear/gear[1]", 1);
> var propGear2 = props.globals.getNode("gear/gear[2]", 1);
> var nose_link_rot = propGear0.getNode("compression-rotation-deg", 1);
> var left_main_rot = propGear1.getNode("compression-rotation-deg", 1);
> var right_main_rot = propGear2.getNode("compression-rotation-deg", 1);
>
> and later sets the latter 3 to calculated values...
> At the end sets itself up to repeat on each frame -
> settimer(update_actions, 0);
This is strictly setting animations, its not affecting anything in the FDM.
> And ties itself into -
> setlistener("sim/signals/fdm-initialized", init_actions);
> and
> setlistener("sim/signals/reset", init_actions);
These are so the rotations aren't being calculated when the FDM is not
available.
> Hmmmm... can not yet see where the r/w 'surface' is in this,
> but some things to try here, to at least rule out
> this particular nasal, like comment out 1 or all of -
> nose_link_rot.setDoubleValue(theta);
> right_main_rot.setDoubleValue(right_alpha_deg);
> left_main_rot.setDoubleValue(left_alpha_deg);
>
> But out of time today, but will be back tomorrow, after eating
> and sleeping on it... I hope... ;=))
>
> Thanks for all the input, and any other ideas welcome...
Hey, I just reproduced the thing. Wind was 14 from 330 and I was on 08 so
there is a small tailwind. The c172p isn't set up to handle out-of-flight
envelope winds so it produces a large, erroneous pitching moment. I have an
idea for a solution. Will test and submit soon.
Ron
> I look forward to a quiet life at YGIL ;=)) Usually do
> not have many visitors, except the kangas...
>
> Regards,
>
> Geoff.
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