> Yes, that leaves the options open. May I suggest this then? (I'm trying
> to get the 747 a/p together :-))
Beat me to it :) Here are two other calculations you'll need, vertical speed
error and mach error.
// Calculate vertical speed error
static SGPropertyNode *target_vert_speed
= fgGetNode( "/autopilot/settings/vert-speed-fpm", true );
static SGPropertyNode *vert_speed
= fgGetNode( "/velocities/vertical-speed-fps", true );
static SGPropertyNode *vs_error
= fgGetNode( "/autopilot/internal/vert-speed-error-fpm", true );
vs_error->setDoubleValue( target_vert_speed->getDoubleValue() -
vert_speed->getDoubleValue() * 60.0);
// Calculate mach error
static SGPropertyNode *target_mach
= fgGetNode( "/autopilot/settings/mach", true );
static SGPropertyNode *mach
= fgGetNode( "/velocities/mach", true );
static SGPropertyNode *mach_error
= fgGetNode( "/autopilot/internal/mach-error", true );
mach_error->setDoubleValue( target_mach->getDoubleValue() -
mach->getDoubleValue() );
Dave
--
****************************
David Culp
davidculp2[at]comcast.net
****************************
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