On 7 Oct 2012, at 09:06, Alan Teeder wrote:
> If I taxi the Lightning the HSI starts operating normally, and does not fail
> when I apply the brakes. Something is not getting initialised I guess.
Watch the properties
/systems/electrical/outputs/DG
and
/instrumentation/heading-indicator-dg/spin
Initially, they are both 0 (no voltage output, hence the gyro isn't
spinning). When full thrust is applied, voltage output goes to 115.0016
and the gyro starts spinning (voltage seems a bit high, but the code
isn't simulating overvoltage failures ;-) ).
When thrust is reduced, voltage output returns to 0, hence the gyro is
slowing down again. Of course, a heading indicator isn't working
properly when the gyro isn't spinning (no voltage supplied).
Check the computation for /systems/electrical/outputs/DG in
Aircraft/Lightning/Systems/lightning-electrical.nas. Something doesn't
seem right.
I have also pushed an update to fg which improves the failure simulation
when gyro spin is low (at spin==0 the indicator should be completely
stuck now). However, I haven't seen anything in there which could have
been different for Windows vs Linux.
cheers,
Thorsten
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