Orbit Flight

How it work?

An orbit flight will fly circles around a point in space.

Once an orbit flight starts to run, it will first fly from its start point to the orbit entrance point, then enter the circle orbit, after flying predefined circles, it will exit from orbit and fly to end point.

The route of an orbit flight will look like:

200000N0800000E ORBIT/150000N0850000E/100/000/540 100000N0900000E

The syntax is:


After reaching end point, the orbit flight will become inactive.

How to use?

Circle orbit is commonly used by flight test to check surveillance equipment (e.g. radar) or navid equipment (e.g. DVOR/DME). It is used to simulate the flight and make sure all support system works well before a real test flight departure.

Create Orbit Flight

Following are the steps to create orbit flight.

  • Step 1

    Man menu -> Simulation -> Flight -> Create Orbit Flights;

    Or Main Toolbar -> Orbit.

    Open Orbit Flight Window.

  • Step 2

    Fill parameters in Orbit Flight Window.

    Click Check to make sure all parameters are correct.

  • Step 3

    Click Create to create an orbit flight.

  • Step 4

    In Main Window, switch to Flight List View, check orbit flight is created.

Here is a sample of Orbit Flight Window.

Orbit Flight Window
And the meaning of each parameter is listed below.

Parameter Description Format Example Note
Callsign The callsign of flight [A-Z]{3}[0-9]{1,4} DLH1923
ICAO Address The Mode-S address [0-9|A-F]{6} 6830C9 System will assign a random Mode-S address which is not used by any other flight
SSR Code The SSR code of flight [0-7]{4} 1277 System will not check if code is duplicated or not
Altitude Flight level, unit is flight level, or 100 feet [0-9]{3} 320
Speed Ground speed [0-9]{3} 400
Start Fix The start point where flight will first appear DDMMSS[N/S]DDDMMSS[E/W] 200000N0800000E
Stop Fix The stop point where flight will finish DDMMSS[N/S]DDDMMSS[E/W] 100000N0900000E
Orbit Center The center of circle orbit DDMMSS[N/S]DDDMMSS[E/W] 150000N0850000E
Radius The radius of circle orbit [0-9]{3} 100
Enter Azimuth The azimuth in degree where flight will enter circle orbit [0-9]+(\.[0-9]{1,2})? 5.00 Range 0.00 - 359.99
Orbit Azimuth The azimuth in degree the flight will fly in circle orbit [0-9]+(\.[0-9]{1,2})? 540.34
Exit Azimuth The azimuth in degree where flight will exit circle orbit [0-9]+(\.[0-9]{1,2})? 184.34 This filed is not mandatory, it will be calculated when clicking Check button
Route The route of orbit flight This filed is not mandatory, it will be calculated when clicking Check button

After clicking the Check button, system will check all parameters and field with error will be marked with red color.

Field with Error