China Civil UAV Theory Questions — Questions 1002–1011

UAV-Q1002. When a remote-control UAV lands, in which case should the throttle be closed appropriately earlier and the closing action appropriately faster?

Explanation

Cases requiring earlier throttle closure: (1) the actual descent point is ahead of the planned descent point; (2) the current height is above the planned height; (3) speed is high and sink is slow; (4) a strong tailwind.

UAV-Q1003. When a remote-control UAV lands, in which case should the throttle be closed appropriately later and the closing action appropriately slower?

Explanation

Cases requiring delayed throttle closure: (1) the actual descent point is behind the planned descent point; (2) the current height is below the planned height; (3) speed is low and sink is fast; (4) a strong headwind.

UAV-Q1004. When a remote-control UAV lands, in which case should the throttle be closed appropriately later and the closing action appropriately slower?

Explanation

Cases requiring delayed throttle closure: (1) the actual descent point is behind the planned descent point; (2) the current height is below the planned height; (3) speed is low and sink is fast; (4) a strong headwind.

UAV-Q1005. When a remote-control UAV lands, in which case should the throttle be closed appropriately later and the closing action appropriately slower?

Explanation

Cases requiring delayed throttle closure: (1) the actual descent point is behind the planned descent point; (2) the current height is below the planned height; (3) speed is low and sink is fast; (4) a strong headwind.

UAV-Q1006. When a remote-control UAV lands, in which case should the throttle be closed appropriately later and the closing action appropriately slower?

Explanation

Cases requiring delayed throttle closure: (1) the actual descent point is behind the planned descent point; (2) the current height is below the planned height; (3) speed is low and sink is fast; (4) a strong headwind.

UAV-Q1007. When a remote-control UAV lands, in which case is a go-around required?

Explanation

Go around in the following five cases: (1) when the flight commander orders a go-around; (2) when an aircraft or other obstacle on the runway affects landing safety; (3) when below 3 m in height and not yet over the runway, or when the visual estimate is too high or too low and the aircraft is not ready for landing; (4) when the landing circuit deviation is large and has not been corrected in time; (5) in any other case deemed necessary.

UAV-Q1008. When a remote-control UAV lands, correcting a visual-estimate deviation

Explanation

A large deviation requires a large correction, so the throttle changes should be large to complete the correction in time. A small deviation requires a small correction, so the throttle changes should be small to avoid overcorrection.

UAV-Q1009. The main causes of deviation in a turn by a remote-control UAV do NOT include

Explanation

The causes tested here are all pilot-caused. There are three main causes of deviation in turns: (1) uncoordinated actions when entering and exiting the turn, producing sideslip; (2) failure to hold the nose-to-horizon relationship during the turn, causing speed to increase or decrease; (3) in the later part of the turn, failure to watch the rollout target direction, resulting in an incorrect rollout direction.

UAV-Q1010. Visual landing estimation is the pilot's visual judgment of the aircraft's flight height and touchdown point. For judging the quality of the visual estimate

Explanation

Visually low: observed from the landing field, when the aircraft's descending height is below the expected height, it touches down before reaching the visual touchdown zone (early touchdown). Visually high: observed from the landing field, when the aircraft's descending height is above the expected height, it touches down beyond the visual touchdown zone (delayed touchdown).

UAV-Q1011. The basic UAV performance that must be understood before takeoff does NOT include

Explanation

UAV performance: (1) the target UAV's landing performance; (2) the target UAV's speed range (true airspeed); (3) the target UAV's speed limits; (4) the target UAV's engine.