On Wed, 2009-01-07 at 17:34 -0700, John Denker wrote: > 77:: In the default c172p model, sitting on the runway at KSFO, at > full power the engine consumes about 78 pph of fuel. So far, so good. > > Now stop the engine by pulling the mixture to cutoff. I observe that > the fuel flow, as reported by the FDM via the property tree, settles > above 8 pph. That’s more than a gallon per hour, with no mixture and > no revs. That seems like rather a large leak. > > Similar phenomena have been observed in other aircraft models.
In the code FuelFlow_gph is the canonical property, FuelFlow_pph is only calculated when we actually consume fuel. Slamming the mixture to 0 at a high fuel flow rate causes consumption to stop leaving the FuelFlow_pph value unable to update and stuck indicating a high value. If you'll notice, fuel is not actually flowing, its just an incorrect indication. Ron ------------------------------------------------------------------------------ Check out the new SourceForge.net Marketplace. It is the best place to buy or sell services for just about anything Open Source. http://p.sf.net/sfu/Xq1LFB _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
