A flight controller provides automatic control of the vehicle. The amount of automatic control can vary from fully autonomous flight to assisted manual flight.
Project AirSim supports the following flight controllers: Simple Flight, PX4 Autopilot, and Manual Controller.
Simple Flight is a lightweight flight controller that comes with Project AirSim and enables you to setup and start flying quickly and easily. Simple Flight currently supports quadrotor, hexarotor, VTOL quad-x tailsitter, and VTOL quad tiltrotor airframes.
PX4 Autopilot is a popular open-source flight controller. Project AirSim using PX4 currently supports the quadrotor airframe in the Hardware-In-The-Loop (HITL) configuration, and quadrotor, hexarotor, VTOL quad-x tailsitter, and VTOL quad tiltrotor airframes in the Software-In-The-Loop (SITL) configuration.
If you are not familiar with setting up PX4, you may find it easier to start with Simple Flight if your airframe is supported.
Manual Controller is a pass-through controller type with control signal outputs that are set completely manually by API and optionally starts with initial values set by config. See Manual Controller settings and Manual Controller commands for more details.
The following chart compares the flight controllers when used with Project AirSim:
| Feature | Simple Flight | PX4 | Manual Controller |
|---|---|---|---|
| Project AirSim Airframes | Quadrotor, hexarotor, VTOL quad-x tailsitter, VTOL quad tiltrotor | Quadrotor, hexarotor, VTOL quad-x tailsitter, VTOL quad tiltrotor in SITL, quadrotor only in HITL | Any |
| Controller Hardware | None | None for SITL, required for HITL | None |
| Setup | Easy | Harder | Easy |
| Use | Easy | Harder | Manual |
| Tuning Support | No | Yes | N/A |
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