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Safety Features

This chapter covers the flight controller's safety features.

Safety features are crucial to ensure the safe operation of the DeltaQuad Evo and to prevent accidents or damage.

To access the safety features configuration screen, you must turn on the vehicle and establish a connection between the Ground Control Station (GCS) and the vehicle.

Modifying the Safety Features

To modify the parameters click on the Vehicle Status icon in the upper left corner of Auterion Mission Control (AMC).

The Vehicle Overview screen will open. Click on Safety at the bottom of the screen. The Safety screen will open.

Return to Home Settings

This section covers the Return to Home settings.

Return to Launch altitude (HGT) is the predetermined minimum height at which the DeltaQuad Evo will ascend to when initiating a return-to-launch (RTL) procedure. This altitude ensures the vehicle clears obstacles and maintains safe separation from the ground while returning to its landing location.

Default: 100 m

The Return to Launch altitude value should be set at least 25 meters above the highest obstacle in the mission area. If the vehicle is below this altitude when an RTL command is triggered, it will climb to the set altitude and then proceed to return. If the vehicle is already above the set altitude, it will continue at its current altitude.

The Return to Launch altitude is referenced to the takeoff location (HGT), not above ground level (AGL). Special care must be taken when operating in an area with varying ground elevations.

When an RTL command is triggered, the DeltaQuad Evo will return in a straight line to the designated landing location. Therefore, the vehicle must be capable of flying directly back to the landing point from any point in the mission or flight path.

The DeltaQuad EVO can perform an autonomous Return to Launch when instructed via the Ground Control Station, initiated from a mission, or triggered by a failsafe event.

Low Battery Failsafe Trigger

This section covers the Low Battery Failsafe Trigger settings.

It is recommended to leave these settings unchanged.

The Low Battery Failsafe Trigger defines what the vehicle does when reaching low battery levels.

Default Failsafe Action: Return at critical level, land at emergency level

Default Battery Warning Level: 15%

Default Battery Critical Level: 10%

Default Emergency Level: 3%

The following Failsafe Actions are available:

Battery Warning Level: The percentage where the vehicle will give a visible and audible warning to the Ground Control Station (GCS).

Battery Critical Level: The level at which the vehicle is expected to have already returned to the landing site after the critical battery level action has been triggered.

Emergency Level: The level at which the vehicle initiates the emergency battery action (land).

The levels are those estimated to be reached when the vehicle has flown to the landing site. This means that the further the vehicle is from its intended landing location, the sooner these actions will be taken.

It is the operator's responsibility to plan missions in a way that ensures the vehicle has sufficient energy reserves to return to the landing site. The Low Battery Failsafe Actions serve as the final safety measure, and all necessary precautions should be taken by the operator to prevent these actions from being triggered.

If the Default Emergency Level action is triggered, no warranty claims will be accepted for any resulting damages or issues.

Data Link Loss Failsafe Trigger

This section covers the Data Link Loss Failsafe Trigger settings.

The Data Link Loss Failsafe Trigger controls the behavior of the vehicle when the telemetry link is lost.

Default Failsafe Action: Return mode

Default Data Link Loss Timeout: 60s

Failsafe detection can trigger one of the following actions.

(*only available in AMC's Advanced Mode)

By default, when a loss of communication occurs, the DeltaQuad Evo Tactical will continue its mission if a mission plan is being executed.

This behavior is inherent to the Evo Tactical, as a loss of communication is expected during missions with the stealth switch enabled.

The settings for the Data Link Loss Failsafe Trigger should be checked before pausing the vehicle mid-flight.

If the trigger is disabled and the data link is lost while the vehicle is paused and in Hold mode, the pilot will be unable to issue new commands. The DeltaQuad EVO will remain in Hold mode until the data link is re-established. If the data link cannot be restored, the vehicle will remain in Hold mode until the Low Battery Failsafe Trigger activates.

Many local laws and regulations require the Failsafe Action to be set to Return mode.

RC Loss Failsafe Trigger (Advanced Mode)

This section covers the RC Loss Failsafe Trigger settings.

This setting can be ignored. The RC Loss Failsafe Trigger can remain unchanged, as the DeltaQuad Evo Tactical uses only a virtual RC link, not a physical one.

To configure the Failsafe Action for a loss of communication, the appropriate actions must be selected for the Data Loss Failsafe Trigger.

The RC Link Loss Failsafe Trigger controls the behavior of the vehicle when the RC link is lost.

Default Failsafe Action: Return mode

Default RC Loss Timeout: 5 s

High Wind Failsafe Trigger

This section covers the High Wind Failsafe Trigger settings.

The High Wind Failsafe Trigger is a safety feature that activates when the vehicle detects wind speeds exceeding 14 m/s. When triggered, it initiates a predefined action, such as returning to home or landing, to prevent the vehicle from being adversely affected by high winds.

Default Failsafe Action: Return

Failsafe detection can trigger one of the following actions.

(*only available in AMC's Advanced Mode)

Geofence Failsafe Trigger

This section covers the Geofence Failsafe Trigger settings.

The Geofence Failsafe Trigger can be set to limit the vehicle's radius and/or altitude. When these parameters are breached, the vehicle will perform the defined action.

Default Action on breach: Hold mode

Default Max Radius: Disabled

Default Max Altitude (HGT): Disabled

Failsafe detection can trigger one of the following actions.

(*only available in AMC's Advanced Mode)

The Max Altitude is referenced to the takeoff location (HGT), not above ground level (AGL). Special care must be taken when operating in an area with varying ground elevations.

Land Mode Settings (Advanced Mode)

This section covers the Land Mode Settings.

It is recommended to leave these settings unchanged.

The Land Mode Settings control the landing behavior of the DeltaQuad Evo.

Default Landing Descent Rate: 0.6 m/s

Default Disarm After: 2 s (enabled)

In windy conditions, the vehicle will automatically adjust to a lower descent rate to improve stability.

The DeltaQuad Evo goes through three stages during the descent in multirotor mode:

Stage 1: The vehicle descends from the set landing altitude to 8 meters above ground at a maximum of 1.5 m/s.
Stage 2: The vehicle descends from 8 meters to 2 meters, reducing its descent speed to 0.6 m/s at 2 meters above the ground.
Stage 3: The vehicle continues its descent from 2 meters to 30 cm above the ground, reaching a descent speed of 0.3 m/s. From 30 cm until touchdown, the DeltaQuad Evo enters crawl speed to ensure a soft landing. This is achieved using the distance sensor in the DeltaQuad Evo.