Andy Ross wrote
> Vivian Meazza wrote:
> > I would deduce that the property:
> > Controls/engines/engine/boost-control
> > Does not exist when the solver runs.
>
> It should still see a zero for undefined properties,
What does it do for defined properties that contain null/nil?
> although you can
> make arbitrary property settings in the approach/cruise definitions up
> at the top. Some of the aircraft
???
> Note again, though, that you appear to have a case bug. The property
> tree name is "controls", not "Controls".
There is no case error, sorry to have mislead you here.
> I would back out your changes to the last version that works and
> re-add them one at a time. The change to the property input for the
> throttle control will not cause a change in solution results.
> Something else must have been modified.
No - nothing else has been modified. I've gone back to the cvs-head version
of source and data. This is the _only_ change in the code anywhere:
<!-- <control-input axis="/controls/engines/engine[0]/throttle"
control="THROTTLE"/>-->
<control-input
axis="/controls/engines/engine[0]/boost-control" control="THROTTLE"/>
this is the solver output in fgfs:
YASim solution results:
Iterations: 1
Drag Coefficient: 1000
Lift Ratio: 1
Cruise AoA: 0
Tail Incidence: -0
Approach Elevator: 0
CG: -3.412, 0.000, -0.201
Same thing using yasim.exe. You can check for yourself very quickly and
easily.
My hypothesis remains that the value of
"/controls/engines/engine[0]/boost-control"
is null/nil at solve time. Since this property hasn't been initialized with
this as the only change this ought to be the case??? If I do initialize the
property using nasal, then the outcome is the same, therefore I deduce that
the property remains null/nil despite apparent initialization until after
solve-time. I have had to add this to some nasal to work around this
elsewhere:
if (mp == nil){mp = 0};
But not in this test - the only change to cvs-head is as above.
Vivian
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