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Inspection Procedure

1.Check mission​

Every 10 hours of flight, or after an operation in a specially dusty environment, please carry out a deep clean on the airframe. Pay special attention to:

  • Arms boom joints
  • Battery connectors
  • Service connectors on the bottom plate
  • Motors
  • GPS modules

2.Check arm booms screws​

Check that the joint piece firmly grips the carbon fiber tube

HERCULES X4 Drone

Figure *. Arm booms screws

3.Check arms boom o-ring​

Check that the O-Ring is in good condition. If it is worn it must be replaced

HERCULES X4 Drone

Figure *. Arms boom o-ring

4. Check Arms Boom Alignment​

The easiest way to carry out this check is to verify that the tips of the upper propellers from two adjacent motors are perfectly aligned.

  • Tip: A drift of more than 1 cm is a symptom of rotated arms.
  • Impact: This misalignment may induce an undesirable yaw movement during flight, which the autopilot will need to compensate for.
    • This results in increased battery consumption.
HERCULES X4 Drone

Figure *. Arms boom alignment

5.Check propeller screws​

Check that there are no loose screws in the connection between the propeller and the motors. The Hercules X8 uses x4 screws M4 x 8mm.

HERCULES X4 Drone

Figure *. Propeller screws

6.Check propeller blades tightening​

Sometimes the propeller blades got loose with respect its central hub. In order to correct this, please tight the locknut.

HERCULES X4 Drone

Figure *. Propeller blades tightening

7.Check propeller integrity​

The propeller blades are made of carbon fiber, a material that start losing its properties due to delamination of the fibers. A delamination usually starts as consequence of an impact on the leading edge of the blade. Verify that there are not signs of delamination.

HERCULES X4 Drone

Figure *. Propeller integrity

8.Check motors rotation​

Check that the motors rotates without obstacles and without producing any noise. If any of these situations occurs, please contact the manufacturer.

HERCULES X4 Drone

Figure *. Motors rotation

9.Check battery connectors​

Check that the connectors are clean and free of impurities. Any impurity present inside the connectors must be removed. It is recommended to blow with compressed air.

HERCULES X4 Drone

Figure *. Battery connectors

10.Check battery velcro status​

These straps are consumables and with use, they will lose their mooring capacity. It is necessary to guarantee a strong and tight mooring prior to each operation.

11.Check antennas status​

Check that all the antennas are intact and the connectors in good condition.