1. Inspection items

Appearance and structure inspection:

Carefully check the appearance of the fuselage to see if there are cracks, damage, deformation, etc. These defects may affect the aerodynamic performance during flight and cause unstable flight. For example, if there are fine cracks in the carbon fiber fuselage, it may further crack during the flight force process.

Check the tightness of the connection parts of each component, such as the connection between the motor and the fuselage, and the propeller and the motor. Loose connections can easily cause flight accidents.

Power system inspection:

Test the speed and torque of the motor to ensure that it can generate enough power to maintain the flight of the drone. Insufficient speed may cause insufficient lift, unable to take off or limited flight altitude.

Check the battery capacity and charging and discharging performance. Endurance is a key indicator of drones. Battery aging or poor performance will greatly shorten the flight time and may also cause the risk of sudden power failure.

Flight control system inspection:

By simulating changes in flight attitude, detect the timeliness and accuracy of the flight control system's response to the tilt, roll, lift and other actions of the drone. If the response is delayed, the drone is prone to lose control in the air.

Verify the accuracy of sensor data, such as the angle deviation measured by the gyroscope, the acceleration value sensed by the accelerometer, etc. Incorrect data will cause the flight control system to issue incorrect instructions.

Navigation and image transmission system detection:

Test the navigation positioning accuracy in different environments to see whether the drone can accurately locate when the satellite signal is interfered. Positioning deviation may cause the flight to deviate from the preset route.

Evaluate the transmission distance, image clarity and stability of the image transmission system. Blurred or interrupted image transmission images will prevent the operator from understanding the flight status in real time, causing control difficulties.

2. Detection method

Appearance and structural inspections use visual inspections combined with measuring tools. Suspicious cracks can be further inspected with flaw detectors; the connection parts are checked with torque wrenches for tightening torque.

Power system detection uses professional motor test benches to measure motor parameters, uses battery testers to analyze battery performance, and simulates the charging and discharging process under actual working conditions.

Flight control system detection builds a simulated flight environment in the laboratory, connects to test equipment, artificially creates flight attitude changes, monitors flight control responses; and uses standard signal sources to calibrate sensors.

Navigation and image transmission system detection, navigation accuracy is tested in multiple scenarios such as open areas and urban areas, and satellite positioning data is compared with actual positions; image transmission performance is analyzed by transmitting images at different distances and environments, and image quality and delay are analyzed.

3. Testing standards

Internationally, there are relevant standards such as IEC. Domestically, according to the "Safety Requirements for Civil Unmanned Aerial Vehicle Systems", strict regulations are imposed on design and manufacturing, performance indicators, and testing processes to ensure consistency and comparability of test results.

4. Significance of testing

For manufacturers, testing helps optimize product design, improve quality, and enhance market competitiveness; for users, it ensures flight safety and reduces operational risks; in terms of industry applications, it ensures the smooth completion of tasks such as agricultural plant protection and surveying and mapping, and promotes the steady development of the drone industry.