Added sensible contents for message

proto/gz/msgs/air_flow_sensor.proto

@@ -18,27 +18,30 @@
 syntax = "proto3";
 package gz.msgs;
 option java_package = "com.gz.msgs";
-option java_outer_classname = "AirSpeedSensorProtos";
+option java_outer_classname = "AirFlowSensorProtos";
 
 /// \ingroup gz.msgs
-/// \interface AirSpeedSensor
-/// \brief Definition of an air speed sensor
+/// \interface AirFlowSensor
+/// \brief Definition of an airflow sensor
 
 import "gz/msgs/header.proto";
 import "gz/msgs/sensor_noise.proto";
 
-/// \brief Message that describes an air speed sensor.
-message AirSpeedSensor
+/// \brief Message that describes an airflow sensor.
+message AirFlowSensor
 {
   /// \brief header data
   Header header               = 1;
 
-  /// \brief Differential pressure (hPa).
-  double diff_pressure        = 2;
+  /// \brief airflow speed Mag in the xy plane (m/s).
+  double xy_speed        = 2;
 
-  /// \brief Temperature (kelvin).
-  double temperature          = 3;
+  /// \brief airflow direction in xy plane (rad).
+  double xy_direction          = 3;
 
   /// \brief Sensor speed noise.
-  SensorNoise pressure_noise     = 4;
+  SensorNoise speed_noise     = 4;
+
+  /// \brief Sensor direction noise.
+  SensorNoise direction_noise     = 5;
 }