add standard vtol airframe

src/modules/simulation/simulator_sih/CMakeLists.txt

@@ -53,6 +53,7 @@ if(PX4_PLATFORM MATCHES "posix")
 		airplane
 		quadx
 		xvert
+		standard_vtol
 	)
 
 	# find corresponding airframes

src/modules/simulation/simulator_sih/sih.hpp

@@ -220,7 +220,12 @@ private:
 
 	float       _u[NUM_ACTUATORS_MAX] {};         // thruster signals
 
+	// MC = Multicopter
+	// FW = Fixed Wing
+	// TS = Tailsitter VTOL
+	// SVTOL = Standard VTOL
 	enum class VehicleType {MC, FW, TS, SVTOL};
+
 	VehicleType _vehicle = VehicleType::MC;
 
 	// aerodynamic segments for the fixedwing