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Autopilot Autothrottle Function

A micro-controller, designed to be used either by itself or with my Autopilot System, that will attempt to maintain the set speed in knots. This controller comes with a toggle button to enable the autothrottle, a keypad to enter the desired speed, and a throttle lever for manual control of the throttle when the autothrottle is disabled. When the autothrottle is enabled, it will automatically move the throttle lever to match the output of the controller so your vehicle won't suddenly accelerate or decelerate when disabling the autothrottle.

- To place this device in your vehicle, use the Selection Grid tool in the Stormworks vehicle editor to load this device into your vehicle. You can use the arrows to drag the device around and place it anywhere on your vehicle.
- You can move and rotate any part of this device in any way you like. Placement and orientation is not important for normal operation.
- The included keypad labeled "In Flight Tuner" can safely be removed after the PID is properly tuned for your aircraft.

Input:

• Current Speed - Connect this node to the output of the Airspeed Sensor[http//Airspeed+Sensor]
  
• Climb/Descent - Do not connect this node unless you are also using the Autopilot Controller.

Output:

• Throttle Setting - Connect this node to your engine throttle or an engine controller of your choice NOTE: the autothrottle will not idle your engine - if you set the speed to 0, it will set the throttle to 0 and cause your engines to shut off.

When the autothrottle is disabled, you can operate the throttle lever normally. To activate the autothrottle, first set your desired speed in the keypad labelled "Target Speed, then activate the autothrottle using the toggle button. The controller will take over control of the throttle and the throttle lever to maintain your set speed.

The autothrottle may or may not need tuning depending on characteristics of your engine(s).
This device uses a PID controller to control the aircraft roll, which means it must be tuned for each aircraft it is installed on. Tuning has been made easy by the use of a simple coefficient for each of the PID values.

1. Use the Select tool in the Stormworks vehicle editor to select the heading micro-controller.
   
2. In the properties window, turn the option "Enable In-Flight Tuning" on.
   
3. Spawn your aircraft and enter a value of 1 in the tuner keypad to start.
   
4. Once you are flying, enter a speed value into the target speed keypad, and activate the autothrottle while monitoring your speed.
   
5. If the vehicle reacts too slowly to changing conditions and is unable to maintain speed while maneuvering even if it hasn't maxed out the throttle, increase the tuning value.
   
6. If the throttle reacts too quickly or your vehicle overshoots your target speed, decrease the tuning value.
   
7. Repeat the previous two steps until you are satisfied with the responsiveness and accuracy of the autothrottle.
   
8. Write down the value you have entered in the tuner keypad so you don't forget it.
   
9. Return to the workshop and select the micro-controller again, turn off "Enable In Flight Tuning," and enter the value you wrote down into the "Tuner Coefficient" property box.
   
10. Make sure to save your vehicle, and enjoy the relaxation of never needing to micromanage your throttle.