This is very simple. I have been engaged in the application and training of unmanned aerial vehicles in Everest navigation for many years. It is recommended to use a toothbrush to clean the nozzle. The toothbrush capillary, which brushes back and forth along the metal gap, can easily extend into the gap of the nozzle to clean the drugs or impurities left in it. Moreover, the toothbrush bristles are soft and will not damage the metal part of the nozzle.

The toothbrush is a soft-haired toothbrush. After normal use, it should be cleaned and stored for later use. When working outside and staying in a hotel, you can bring a disposable toothbrush from the hotel. Although this toothbrush has a short service life, it can still meet the requirements of nozzle cleaning.

It should be noted that please remove the nozzle from the plane before cleaning, keep the nozzle moist during cleaning, and use moderate force for cleaning. After cleaning, you can check by light source to confirm that the nozzle blockage has been completely cleaned.