With reference to Unmanned Aerial Vehicles (UAVs), consider the following statements:
I. All types of UAVs can do vertical landing.
II. All types of UAVs can do automated hovering.
III. All types of UAVs can use battery only as a source of power supply.
Which of the statements given above are correct?
Answer:
(d)
Easy
Application Based
CA
Statement I is not correct. Not all UAVs are capable of vertical landing. Vertical take-off and landing (VTOL) is a feature of rotary-wing UAVs like quadcopters and some hybrid designs. However, traditional fixed-wing UAVs require a runway or launch-and-recovery systems and cannot land vertically. Statement II is not correct. Automated hovering is possible only in UAVs designed for it—mainly rotary-wing drones. Fixed-wing UAVs, which resemble airplanes, need forward motion to generate lift and thus cannot hover. Statement III is not correct. While many small UAVs use batteries as their power source, not all UAVs are battery-powered. Medium and large UAVs (like military or surveillance drones) often use internal combustion engines, fuel cells, or hybrid propulsion systems depending on their range and endurance requirements. Therefore, it is incorrect to say that all UAVs use only batteries.