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Luiz Fellipe Carneiro edited this page Dec 9, 2017 · 5 revisions

FLY The atmospheric autopilot

The fly script is a complete atmospheric autopilot for your planes and shuttles. The script uses a Graphic User Interface to makes the control of its features easier.

Parameters

Name Type Default Value Description
KindOfCraft String Plane Set the ILS/Autoland profile. Use Planefor aeroplanes and Shuttle for space shuttles.
LandingGear String Taildragger Set the behaviour of the craft after touching the runway. Use Tricycle for crafts with tricycle style landing gear and Taildragger for crafts with conventional style landing gear.

Normal planes, with tricycle landing gear, can be flow by running fly without any parameters. If you wish to fly a plane with conventional landing gear (when the main wheels are in the front and the small wheel used for steering is in the tail) run the script as fly("Plane","Taildragger") to enable protection against nose-over accidents.

When you're using fly to land a shuttle that just deorbited, run it like fly("Shuttle") to enable a steeper glideslope and to start the script with the ILS (Instrument Landing System) sequence active.

Modes of Operation

The complete fly system is divided into two subsystems: Autopilot (AP) and Autothrottle (AT). As the names suggest, they control, respectively, the flight path and the engine power of the craft. Those systems are independent of each other.

The Autothrottle system has 3 modes of operation:

  • SPD (Speed) mode: Try to keep the craft flying with a determined speed.
  • MCT (Maximum continuum thrust) mode: Keep the craft flying at maximum throttle.
  • OFF mode: Let the user control the engines' power.

The Autopilot subsystem is divided into three parts: LNAV, VNAV and Yaw dumper. LNAV stands for lateral navigation and is responsible for controlling the craft's ailerons. VNAV stands for vertical navigation and its job is to control the craft's elevators and finally, Yaw dumper controls the rudder. Those parts are not fully independent and are controlled in 3 main modes of operation:

  • HLD (Hold): Holds a desired flight path.
  • ILS (Instrument Landing System): Lands on a runway.
  • OFF: Deflates Ottoand let the user fly the plane manually.
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