UAV Communication and Fail-Safe Procedures

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Questions and Answers

What is the first action to take when a video channel failure is detected?

Replace GCS components

Set video transmitter to 'Low'

Turn off the UAV

Use the operative channel for communication (correct)

What indicates that GPS failure has occurred?

Steady flight path

Low battery warning

GPS LOSS alert (correct)

Green UAV icon

What might be a consequence of GPS failure?

Unreliable UAV position report (correct)

Stable wind direction

Increased video quality

Accurate UAV tracking

In the event of GPS failure, what should the UAV operator do to assist in navigation?

Maintain radius with CG/Roll bar/HDG Signup and view all the answers

What is the significance of having a red UAV icon during GPS failure?

Warns of unreliable GPS data Signup and view all the answers

At what battery percentage is the red warning for VTOL battery voltage considered high?

38.2% Signup and view all the answers

What action should be taken if the VTOL battery percentage is at 10% during landing?

Consider landing immediately Signup and view all the answers

If the VTOL battery is in a low voltage condition of 31%, what should be considered during flight?

Consider transitioning at low altitude Signup and view all the answers

What does a red indicator signify when the battery percentage is low?

Critical risk of battery failure Signup and view all the answers

Which action should be taken if the VTOL battery is below the yellow threshold of 31%?

Refer to the appropriate manual for malfunction details Signup and view all the answers

What action should be considered if the VTOL battery voltage is at a low level during takeoff?

Consider QLand Signup and view all the answers

What is the indication of a red VTOL Motor cut?

Battery voltage is in critical range Signup and view all the answers

What is the voltage level of a low yellow VTOL battery?

34.4 volts Signup and view all the answers

What should be done if the VTOL battery voltage reaches 42.4 volts and shows high status?

Check for battery malfunction Signup and view all the answers

What voltage condition alerts the operator of an imminent danger according to the displayed information?

Battery voltage at 30 volts or less Signup and view all the answers

What indicates that a UAV has not reached the required transition speed?

UAV does not reach 60 Km/h Signup and view all the answers

What immediate action should be taken if a UAV performs an automatic emergency landing?

Announce landing Signup and view all the answers

Which condition may lead a UAV to enter 'Loss of Link' logic?

The UAV shows a frozen telemetry update Signup and view all the answers

What action should be taken when a red 'Comm' alert is detected?

Increase the amplification Signup and view all the answers

In which scenario should the operational sortie continue with one communication channel only?

One communication channel fails during an operational sortie Signup and view all the answers

What should the crew do if both communication channels fail?

Search for eye contact with the UAV Signup and view all the answers

What verification step is essential for GCS checks?

Verify the LAN cable is connected Signup and view all the answers

Which action should be considered if the UAV amplifiers are not functioning properly?

Set the amplifiers to 'high' Signup and view all the answers

What wind speed is categorized under strong wind conditions?

25 - 60 km/h Signup and view all the answers

At what external temperature level is considered low for preventing icing?

5° Signup and view all the answers

What is the recommended action when the flight battery voltage drops to 29.5?

Consider landing immediately Signup and view all the answers

What warning is associated with a flight battery voltage of 30.5?

Consider landing Signup and view all the answers

At what wind velocity does it become necessary to be aware of external UAVs?

0 - 60 km/h Signup and view all the answers

What is indicated by a condition classified as 'Red' for flight battery?

Imminent motor cut Signup and view all the answers

What is the significance of wind shears mentioned in relation to wind conditions?

They indicate strong vertical movements in wind Signup and view all the answers

Which of the following conditions is described as 'low'?

Flight battery below 29.5 volts Signup and view all the answers

Study Notes

Transition Timeout

The UAV will perform an automatic emergency landing after 30 seconds if it doesn’t complete the transition or reach 60 km/h.
If the UAV descends below 30 meters, an immediate QLAND command should be issued.

Communication Interruptions

A red “Comm” alert, red UAV icon, or frozen/blinking telemetry updates indicate a communication interruption and the UAV entering “Loss of Link” logic.
Actions should include switching communication channels, increasing amplification, and verifying GDT and GCS functionality.
If the link is not recovered, consider continuing the mission with only one communication channel or returning to the landing site.
If both communication channels fail, check the last UAV position, shut down noise sources, and search for eye contact with the UAV.

Video Channel Failure

Signs of a video channel failure include a jammed or black screen on the nose camera, a red "UAV link" alert, and operative primary channel with non-operative secondary communication.
Actions include using the operative communication channel, setting the video transmitter to "High", verifying GDT and antenna connections, and restarting the camera.
If the failure persists, consider replacing GCS components or aborting the flight.

GPS Failure

A GPS failure is indicated by a GPS LOSS alert, a red UAV icon, spoofing detection, and the inability to maintain GPS flight modes.
The UAV's position report, wind data, and true position may be unreliable during a GPS failure.
The GDT's heading may be incorrect, and the Waldo Mission may not be possible.
Actions during a GPS failure include maintaining a radius with the CG/Roll bar/HDG, using the camera to identify familiar locations, and verifying wind conditions.

Flight Control Malfunctions

Wind speed and direction, as well as external temperature, can impact flight control.

Battery Malfunctions

Battery malfunctions can be detected by observing flight battery voltage, flight battery percentage, and VTOL battery voltage.
Red alerts for battery malfunctions indicate significant issues that require immediate action.
Low battery levels can lead to motor shutdown.
Battery malfunctions in takeoff require immediate QLAND.
Battery malfunctions in flight can impact the ability to transition between landing modes.
Actions taken based on battery alerts include considering landing, transitioning at low altitude, and referring to relevant battery malfunction documentation.

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Description

This quiz covers vital emergency protocols for UAV operations, focusing on transition timeouts, communication interruptions, and video channel failures. Test your knowledge on how to effectively respond to critical situations to ensure safe UAV landings and mission continuity.