James Turner wrote:\ > Case in point - in the Citation Bravo, there's all manner of strange > alerts - I get bank angle alerts on take off, and loads of 'too low, > flaps', 'glideslope' and 'bank angle' warnings on finals. I'm not all > the way there with understand what is happening, but a major part is > that the Bravo's attitude indication system seems to be non- > functional. The key properties here are: > > /instrumentation/attitude-indicator/indicated-roll-deg > and > /instrumentation/attitude-indicator/indicated-pitch-deg > > In the case of the Bravo, these are always returning bogus values - > roll-deg is 40 degrees (hence the bank alarms!) and pitch-deg is 12 > (again, I suspect not helping on landing). > > attitude-indicator comes from two possible sources - either the > attitude-indicator.cxx class, which uses a vacuum powered gyro, or the > 'master reference gyro' in mrg.cxx, which is electrically powered. The > Bravo's electrical bus is definitely fine, but I'm less sure about the > vacuum system - once the engines are running, it's reporting a value > of (from memory) -14.56 (inHg). I've no idea if negative numbers are > correct, but I can believe that they might be, especially for inches > of mercury. Anyway, the gyro-spin is reported as zero, despite the > attitude indicator being serviceable and the gyro being uncaged. > > At this point I could benefit from others (Syd?) about how this is all > meant to be fitting together, so the gyro gets powered and the MkVIII > sees a valid input. > > (All of the above is with bleeding edge CVS of data and source) >
I think you might have found the problem .... I dont have time to test till tomorrow , but the rpm property is normally initialized in the set file for engines that dont use rpm , to drive these instruments .. and Im sure I use the RPM prop as a shutdown N1 , so that never gets high enough Id say ... well back to work , I'm eager to test this .Thanks for the legwork , James . ------------------------------------------------------------------------------ SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
