China Civil UAV Theory Questions — Questions 1032–1041

UAV-Q1032. When a UAV pilot operates a UAV descending below 10 m, what is mainly observed?

Explanation

Below 10 m in descent, the aircraft enters the landing phase, and fuel level and navigation lights are not the priority information. In landing, the pilot must correctly observe the ground relationship, aircraft height, speed, state, descent rate, and similar factors.

UAV-Q1033. When a UAV pilot operates a UAV in a descent, the correct throttle state is

Explanation

At all descent altitudes, keep the throttle in an appropriate position (for example, 15%).

UAV-Q1034. When a UAV pilot operates a UAV in the landing roll, the correct throttle state is

Explanation

During the flare, one hand should stay on the throttle so the pilot can go around immediately in any sudden or dangerous situation. Under normal conditions, close the throttle gently and evenly according to the visual estimate, usually finishing the closure by the end of the flare. At the latest, the throttle must be fully closed before touchdown. Option A is therefore correct.

UAV-Q1035. The correct description of a remote-control UAV's takeoff roll is

Explanation

Option A can cause the aircraft to lift off before reaching takeoff speed, increasing the risk of a stall and crash. A quick pull can also produce an excessive pitch angle after liftoff, making flight unstable. Option A is wrong. Option B: gradually pushing the throttle to full gives smooth acceleration and reduces airframe shaking from a sudden thrust increase. When the aircraft reaches takeoff speed, a gentle pull lifts it off smoothly and holds a proper pitch angle for the climb. Option B is correct. Option C: even with enough speed, an appropriate pull is still needed to lift the aircraft off. Option C is wrong.

UAV-Q1036. The purpose of UAV nosewheel deflection is

Explanation

Nosewheel deflection helps the aircraft turn while taxiing and correct the roll direction, similar to how a car's or bicycle's front wheel steers.

UAV-Q1037. When a UAV takes off in a left crosswind, the crosswind tends to yaw the nose toward the

Explanation

A left crosswind is wind blowing from the left. It applies a rightward force on the vertical stabilizer (fin), causing the nose to yaw to the left.

UAV-Q1038. Which of the following is NOT a description and cause of deviations easily produced in a turn?

Explanation

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-Q1039. When a remote-control UAV lands, the correct description of using the sideslip method to correct for crosswind is

Explanation

After exiting the fourth turn, based on how far the aircraft has deviated from the runway, judge the direction and magnitude of the drift, promptly bank moderately toward the crosswind and apply opposite rudder to stop the aircraft from turning, keeping the aircraft's longitudinal axis parallel to the landing marker line. When the sideslip angle matches the drift angle, the aircraft lines up with the runway centerline in descent.

UAV-Q1040. When a remote-control UAV lands, the correct description of using the sideslip method to correct for crosswind is

Explanation

When using the sideslip method, the aircraft is banked, the vertical component of lift becomes smaller, the descent rate increases, and the visual estimate easily becomes low, requiring added throttle to correct, increasing lift and thus the vertical component of lift.

UAV-Q1041. When a remote-control UAV lands, the correct description of using the combined sideslip and heading-change method to correct for crosswind is

Explanation

Study note: the fourth-turn exit may be advanced or delayed. The timing for exiting the fourth turn should be advanced or delayed appropriately according to the wind direction (in a left traffic pattern, a crosswind from the right side of the runway means early, and a crosswind from the left side means late), so that after exiting the fourth turn, the nose points toward the runway edge on the crosswind side.