On Wednesday 17 December 2008 23:04:28 John Denker wrote:
> A couple more six-legged crawly things:
>
> 42:: Instrument: KAP-140: As of rc2, as installed in the c172p and
> presumably others, on initial startup the display of the Sim World
> KAP-140 is blank. This is already a bug, because the display of the
> Real World KAP-140 is never blank (unless you pull the circuit
> breaker, which is not relevant to the present discussion). In
> particular, the altitude alerter function is always active and cannot
> be turned off, even in the rather common case where the auto-bank and
> auto-pitch functions are on standby. In this case, the RW KAP-140
> displays the target altitude. It would be nice if the SW KAP-140
> did the same.
Unfortunately I am unable to build FG at the moment but I think this patch
will display the target altitude at initialisation.
diff --git a/Aircraft/Generic/kap140.nas b/Aircraft/Generic/kap140.nas
index 1b76255..1e129c9 100644
--- a/Aircraft/Generic/kap140.nas
+++ b/Aircraft/Generic/kap140.nas
@@ -226,7 +226,7 @@ var apInit = func {
annunciatorFpm.setBoolValue(0);
annunciatorAlt.setBoolValue(0);
annunciatorAltArm.setBoolValue(0);
- annunciatorAltNumber.setBoolValue(0);
+ annunciatorAltNumber.setBoolValue(1);
annunciatorGs.setBoolValue(0);
annunciatorGsArm.setBoolValue(0);
annunciatorPtUp.setBoolValue(0);
> The nightmare scenario for the noobie pilot is taking off from an
> airport situated above 1000 MSL and flying to an airport at 950 MSL.
> Since the "default" target altitude is zero, there will be an alert
> on short final at 1000 MSL == 50 feet AGL. Unexpected beeping
> warnings at 50 feet AGL are not a good thing.
Displaying the target altitude at all times will of course still result in the
beeping as you describe, but I guess it will be more expected. Can you
confirm that the RW KAP-140 behaves like this?
> We note in passing that the instructions at
> http://wiki.flightgear.org/index.php?title=Bendix/King_KAP140_Autopilot
> do not even mention the alerter.
I was too lazy to document all the features, so I just pointed to the Pilot's
Guide :-) Feel free to add a mention of the altitude alerter in the Wiki.
--
Roy Vegard Ovesen
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