Understanding human factors are important for all areas of aviation. Pilot error accounts for a high percentage of major aircraft accidents; with advances in technology, it is now a human ability that is the weakest link in the aviation chain. Consideration of human factors is not just relevant to manned aviation but is also important for RPA controllers and can determine the successful outcome of a ﬂight.
• Air Frame For all components to be mounted on • Power Source - usually a battery • Power Distribution System - one at battery voltage, another for low voltage • Electronic speed controller(s) (ESC) - vary the speed of the motors
All air vehicles are subject to the forces of nature. Understanding meteorology is equally important for the safety of large aircraft as it is for small aircraft and RPAs. 26% of all general accidents are weather-related. 70% of all airline delays are due to weather. Every ﬂight requires a study of forecasts before ﬂight planning.
The signal from the satellites actually slows down as it passes through the Earth's atmosphere. GPS technology accounts for this error by taking an average time, which means the error still exists but is limited.
Definitions: "Remotely piloted aircraft" (RPAS) means an unmanned aircraft that is piloted from a remote pilot station, excluding model aircraft and toy aircraft. "Toy aircraft" means a product falling under the definition of aircraft which is designed or intended for use in play by children.
All RPAs require an energy source. The type of energy source depends mostly on the type of motor. Larger RPAs rely on fuel and have larger ﬂight times. For smaller battery-powered RPAs LiPo batteries are the most widely used battery option.
Multi-rotors are a popular platform, with many applications for many remotely piloted aircraft (RPA). Multi-rotors do not rely on complex mechanical linkages or actuating control surfaces to get their movement. Instead, they rely on ﬁxed pitch rotors and use variation in motor speed for vehicle control.