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2022 DJI All Rights Reserved.
AGRAS T40/T20 P
Unmanned Aircraft Flight Manual
2. The aircraft immediately brakes and hovers if it detects an obstacle nearby. Users cannot control the
aircraft while it is braking.
Users can y in a direction away from the obstacle to regain full control of the aircraft.
Backward obstacle avoidance will be disabled when the aircraft ies backward at a speed of
more than 7 m/s. Fly with caution.
Obstacle avoidance is disabled during auto landing. Make sure to operate the aircraft with
caution when controlling the aircraft manually during auto landing.
If backward obstacle avoidance is disabled in the app, the aircraft cannot detect obstacles
behind the aircraft while ying backward.
Upward Radar Usage
Make sure the upward obstacle avoidance function of the radar module is enabled in the app. Obstacle
avoidance is used in the following two scenarios:
1. The aircraft begins to decelerate when it detects an obstacle is 3 m away and brakes and hovers in
place.
2. The aircraft immediately brakes if it detects an obstacle nearby.
Users cannot accelerate in the direction of the obstacle, but can y in a direction away from the obstacle
when the aircraft is braking or hovering.
Terrain Follow and Bypassing Functions Usage
In Sensor Settings in the app, select the task terrain according to the environment and enable Auto
Terrain Follow and Obstacle Bypassing. Each type of task terrain is suitable for the corresponding
operation modes. Refer to the descriptions below.
Bypassing is disabled during night or in dark environments. Fly with caution.
In some scenarios such as with power lines, the bypassing function may not be able to
bypass the obstacle successfully. Users can bypass the obstacle by manually controlling the
aircraft.
Terrain follow will be affected when the aircraft is ying over water. Fly with caution.
The max ight speed of the aircraft will be limited to 7 m/s and the height above the vegetation
will be limited from 2.5 to 8 m when obstacle bypassing is enabled.
Mapping/Field on Flatland
This task terrain is suitable for Mapping operations or Route, A-B Route, and Manual operations in areas
without obvious surface elevation changes.
1. Select Mapping/Field on Flatland as the task terrain.
2. Enable Auto Terrain Follow only. Enter the desired operation mode and set the height above the
vegetation. After the operation is started, the aircraft will y above the vegetation at the pre-set height.
3. Enable both Auto Terrain Follow and Obstacle Bypassing (supporting Route and A-B Route
operations only). After a Route or A-B Route operation is started, the aircraft will bypass detected
obstacles automatically. Moving the control stick can pause auto bypassing. The aircraft will hover in
place if bypassing fails. Users can bypass the obstacle by manually controlling the aircraft.
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