6.1 The basics of flying
6.2 The four main forces
6.3 Flight control surfaces
6.4 Aerodynamic hazards
6.6 The main components of a UAS
6.8 Inspecting the UAS and safety considerations
6.9 UAS settings
As we explained earlier on in this chapter, an UAS is able to fly on the
basis of several aerodynamic principles. However, there are also certain
aerodynamic hazards, two of which are particularly dangerous UAS with rotors.
Downwash is a phenomenon that occurs while an UAS is hovering and the
rotors generate a downward air current. This air current can suck up sand, dirt
and other light objects and potentially damage the motor.
See chapter 6.11 for a summary.