32 Chapter 2 Flight Safety
If you stop the propellers when the aircraft has an initial velocity, the aircraft will fall along
a parabolic trajectory. If the trajectory is unpredictable, do not stop the propellers.
After completing an emergency landing, contact Autel Robotics promptly for a power
system inspection and maintenance.
Mid-flight Sensing
Automatic Dependent Surveillance-Broadcast (ADS-B) is a manned aircraft monitoring
technology that allows a manned aircraft to determine its position using satellite navigation
systems and broadcast the information regularly, making the aircraft trackable. Other aircraft
can receive the information to achieve attitude awareness and autonomous avoidance.
The Autel Alpha aircraft is equipped with ADS-B receivers that can receive flight information
broadcast by ADS-B transmitters that support the 1090ES and UAT standards within a range of
10 kilometers. By analyzing the received flight information, the position, altitude, course, and
speed of the manned aircraft will be obtained, and the obtained information will be compared
with the current position, altitude, course, and speed information of the aircraft. The Autel
Enterprise App will provide real-time risk warnings, reminding users to plan flight paths rationally
and pay attention to avoidance.
The aircraft has been pre-configured with the ADS-B receiver hardware at the factory. The
mid-
flight sensing function will be available in subsequent versions. Please update the
aircraft firmware in a timely manner.
Operation path: Tap “ ”> “ ” > “ ” > “Safety” > “Receive ADS-B” in the main interface of
the Autel Enterprise App, and follow the on-
screen instructions to perform relevant
operations. For more information, see “6.5.8 More” in Chapter 6.
Direct Remote Identification
The Direct Remote Identification (DRI) system allows for uploading the registration number
(Remote ID) of a UAS operator to the system. During flight, it can actively broadcast some non-
sensitive data to mobile devices within its broadcast range in real time via an open, documented
transmission protocol. The non-sensitive data includes the registration number of the operator,
the unique serial number, timestamp, geographical location, altitude above ground level or take-
off point, route measured clockwise from true north, and ground speed of the unmanned
aircraft, and the geographical location of the operator (if available, otherwise the geographical
location of the take-off point). This system not only effectively controls potential risks to public
safety posed by unmanned aircraft during flight but also provides effective information and data
tools for unmanned aircraft flight regulation.
The Autel Alpha aircraft supports the DRI system and uses Wi-Fi (Wi-Fi Beacon, 802.11n) for
broadcasting. To enable the DRI system, configure it in the Autel Enterprise App.
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