Safety parameters

A drone is a tool for professionals that can be a safety risk if not used properly. Make sure you always respect the limitations of your system to ensure the safety of material and people.

WingtraPilot features a couple of safety parameters to ensure safe operation throughout the entire flight. The parameters allow you to influence the automatically-triggered RTH scenarios described in Return to home.

The safety parameters are accessible on the top right during mission planning via the drop-down menu below the flight plan information.


Before starting a flight, one can adjust the parameters. These parameters are not saved to the flight plan. They are thus required adaptations after each power cycle / flight, which is especially relevant if your project requires more than one flight. Keep in mind the following considerations:

Geofence radius around home 

  • Defines the maximum allowable distance from home in the particular mission
  • Prevents a fly-away of the WingtraOne beyond this distance
  • When creating or opening a flight plan, the maximum default radius is set to 1200 m, which corresponds to the maximum visual line of sight

Geofence height above home

  • Defines the maximum allowable height above home in the particular mission
  • Prevents a fly-away of the WingtraOne beyond this height
  • Per default, the maximum height is set to 400 m before each take-off

Minimum RTH height above home

  • Defines the minimum height, at which WingtraOne returns to home 
  • If current height is lower than the defined minimum RTH height, WingtraOne will climb to the set value in a loiter circle and only then will it fly directly home
  • Per default, minimum RTH height above home is set to 60 m before each take-off
  • Adapt minimum RTH height to the mission requirements—in particular in difficult terrain and when using ground elevation offsets

Connection loss timeout

  • Defines the time span after which WingtraOne will execute an RTH if the telemetry connection is lost. If you fly with a remote control (RC),  the connection loss timeout indicates the time that WingtraOne will return after both links (telemetry and RC) are lost.
  • Note: since no telemetry connection is available, you will not receive feedback on the state of WingtraOne
  • Per default connection loss timeout is set to 60 seconds before each take-off
  • Adapt connection loss timeout to your mission requirements. I.e., in cases of flights beyond visual line of sight and obstacles in the direct line of sight, you may need to increase the timeout time to ensure that WingtraOne follows and completes the defined flight plan
Without telemetry connection you have no means of interacting with your WingtraOne; do not increase connection loss timeout unnecessarily, and make sure not to violate your local law

Minimum ground clearance

  • Defines the minimum distance between the flight height and the terrain height
  • Use the minimum ground clearance parameter to account for trees, houses and obstacles
  • Set the parameter to have a margin to the highest obstacle in the flight area
  • Note: The minimum ground clearance parameter accounts for uncertainty in the elevation data, which is approximately +- 20 m. Especially in steep terrain, it is recommended to increase the ground clearance parameter.
  • Important: if the minimum ground clearance parameter is higher than the defined height above ground, the flight height will adjusted to match the ground clearance parameter
  • Read the article Flight Planning Tools to learn how to optimally use the minimal ground clearance.