SimConnect - getting all the reference speeds

There is no problem with getting True Air Speed or Indicated Air Speed, but does anyone know how to get reference speeds with simconnect? I mean speeds, that are described by colored stripes on the speed meter (like Vr, Vx, Vy if I think correctly :stuck_out_tongue: )

Isn’t there any info here? I’d like to create a speed indicator, that looks like one from G1000…

Have a look at the flight model variables - lots of reference data there: Aircraft Flight Model Variables

I think not all of [REFERENCE SPEEDS] are accessible through SimConnect. Does that mean I will need to browse aircraft files to process those speeds?

Hello, you can get them in a sort of “tricky” way. I have done it in my FSAutomator application I released some minutes ago. Let me describe how I achieved it.

  1. Get the aircraft loaded via the SimConnect API:
Connection.OnRecvSystemState += new SimConnect.RecvSystemStateEventHandler(GetAirCraftCfgPath);
Connection.RequestSystemState(DATA_REQUESTS.REQUEST_1, "AircraftLoaded");
  1. On you method “GetAirCraftCfgPath”, do:
  • Get all airplanes dfg files installed in the official and the community folders. These files are “aircraft.cfg”. This way you get the full path to them.
  • Get the correct “aircraft.cfg” file path by matching the end of the file paths. In my case, I keep the first one and it has always worked.
  • Now that you have the file path, you can get the “flight_model.cfg” and read it as an INI file.

This is my code:

    public class FlightModel
        private string flightModelPath;
        public ReferenceSpeeds ReferenceSpeeds { get; set; }

        public FlightModel(SimConnect Connection)
            if (Connection != null)
                Connection.OnRecvSystemState += new SimConnect.RecvSystemStateEventHandler(GetAirCraftCfgPath);
                Connection.RequestSystemState(DATA_REQUESTS.REQUEST_1, "AircraftLoaded");

        private void GetAirCraftCfgPath(SimConnect Connection, SIMCONNECT_RECV_SYSTEM_STATE data)
            var baseFSPathOfficial = @"C:\Users\Albert\AppData\Roaming\Microsoft Flight Simulator\Packages\Official";
            var baseFSPathCommunity = @"C:\Users\Albert\AppData\Roaming\Microsoft Flight Simulator\Packages\Community";

            List<string> installedAircrafts = SearchFileInAllDirectories(baseFSPathOfficial, "aircraft.cfg");
            installedAircrafts.AddRange(SearchFileInAllDirectories(baseFSPathCommunity, "aircraft.cfg"));

            var currentAircraftCfgPath = installedAircrafts.Where(z => z.EndsWith(data.szString, StringComparison.CurrentCultureIgnoreCase)).FirstOrDefault().ToString();

            if (currentAircraftCfgPath != "")
                this.flightModelPath = Path.Combine(Path.GetDirectoryName(currentAircraftCfgPath), "flight_model.cfg");

                IniFile ini = new IniFile(flightModelPath);
                this.ReferenceSpeeds = new ReferenceSpeeds(ini);

        private List<string> SearchFileInAllDirectories(string parentDirectory, string filename)
            return Directory.GetFiles(parentDirectory, filename, SearchOption.AllDirectories).ToList();


And my ReferenceSpeeds class looks something like:

    public class ReferenceSpeeds

        public ReferenceSpeeds(IniFile ini)

            this.FullFlapsStallSpeed = ini.Read("full_flaps_stall_speed", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.FlapsUpStallSpeed = ini.Read("flaps_up_stall_speed", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.CruiseSpeed = ini.Read("cruise_speed", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.MaxMach = ini.Read("max_mach", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.MaxIndicatedSpeed = ini.Read("max_indicated_speed", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.MaxFlapsExtended = ini.Read("max_flaps_extended", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.NormalOperatingSpeed = ini.Read("normal_operating_speed", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.AirspeedIndicatorMax = ini.Read("airspeed_indicator_max", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.RotationSpeedMin = ini.Read("rotation_speed_min", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.ClimbSpeed = ini.Read("climb_speed", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.CruiseAlt = ini.Read("cruise_alt", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.TakeoffSpeed = ini.Read("takeoff_speed", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.SpawnCruiseAltitude = ini.Read("spawn_cruise_altitude", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.SpawnDescentAltitude = ini.Read("spawn_descent_altitude", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.BestAngleClimbSpeed = ini.Read("best_angle_climb_speed", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.ApproachSpeed = ini.Read("approach_speed", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.BestGlide = ini.Read("best_glide", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.BestSingleEngineRateOfClimbSpeed = ini.Read("best_single_engine_rate_of_climb_speed", "REFERENCE SPEEDS").Split(';')[0].Trim();
            this.MinimumControlSpeed = ini.Read("minimum_control_speed", "REFERENCE SPEEDS").Split(';')[0].Trim();


        public string FullFlapsStallSpeed { get; set; }
        public string FlapsUpStallSpeed { get; set; }
        public string CruiseSpeed { get; set; }
        public string MaxMach { get; set; }
        public string MaxIndicatedSpeed { get; set; }
        public string MaxFlapsExtended { get; set; }
        public string NormalOperatingSpeed { get; set; }
        public string AirspeedIndicatorMax { get; set; }
        public string RotationSpeedMin { get; set; }
        public string ClimbSpeed { get; set; }
        public string CruiseAlt { get; set; }
        public string TakeoffSpeed { get; set; }
        public string SpawnCruiseAltitude { get; set; }
        public string SpawnDescentAltitude { get; set; }
        public string BestAngleClimbSpeed { get; set; }
        public string ApproachSpeed { get; set; }
        public string BestGlide { get; set; }
        public string BestSingleEngineRateOfClimbSpeed { get; set; }
        public string MinimumControlSpeed { get; set; }