I'm working on modifying the interface between JSBSim and FlightGear to work with the new JSBSim standard atmosphere model. There are two or three ways that the atmosphere model can be modified by the calling application:
A temperature bias can be added to the entire temperature profile (from sea level to high altitude) by using the SetTemperature() method: SetTemperatureSL(double t, eTemperature unit=eFahrenheit) Or SetTemperature(double t, double h, eTemperature unit=eFahrenheit) Units supported are eFahrenheit, eCelsius, eRankine, eKelvin. Using one of these will cause a bias to be calculated and used to modify the temperature profile. Setting the temperature will cause the pressure calculations to be re-run. A pressure can also be set using this methods: SetPressureSL(double pressure, ePressure unit=ePSF) Currently, only the sea level pressure can be modified. The available units are: ePSF, eMillibars, ePascals, eInchesHg. I may provide a way to set the pressure at an elevation. Neither pressure altitude nor density altitude are currently being calculated in the new standard atmosphere model - those will be added at some point. I should also add that with the new standard atmosphere model there is another way to modify the standard atmosphere temperature profile, but that would be done using properties and not through a standardized atmosphere API call. For more information, see the JSBSim API documentation at www.jsbsim.org/JSBSim/. The documentation has not been updated with the very latest, but it is still very current. Finally, note that the new standard atmosphere model has not quite yet been integrated with FlightGear, but that should be possible in just a few days. Jon ------------------------------------------------------------------------------ Simplify data backup and recovery for your virtual environment with vRanger. Installation's a snap, and flexible recovery options mean your data is safe, secure and there when you need it. Data protection magic? Nope - It's vRanger. Get your free trial download today. http://p.sf.net/sfu/quest-sfdev2dev _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
