Aerial drones have gradually created a niche in our lives, filling up voids in fields such as logistics, photograph, surveillance, leisure etc. These gadgets have come to stay. More specifically, the predominance of quadcopters in aerial drone design often leaves users pondering the reason behind this occurrence.
These multirotor drones sturdily balance four electric rotors on the four corners of an X-shaped lightweight frame and each electric rotor is responsible for powering its individual propeller which can perform all six degrees of motion, but in this case in concert with its other three sibling-propellers.
Benefits of using quadcopter drones
- Design simplicity: Quadcopter drones are designed to be aesthetically appealing due to their symmetric rotor configuration in vast contrast to their less appealing co-axially counterbalanced single rotor counterpart. Also, designing single rotor drones on smaller scales can be very cumbersome and uneconomical, thereby discouraging from a design perspective.
- Mechanical simplicity: Quadcopter drones are more beneficial than single rotor drones primarily because of this reason. In single rotor drones, to vector its pitch or maneuver, the main rotor blade must alter its pitch and engage its tail rotor for stability. Although this process sounds very simple to achieve, this cyclic-pitch altering and balancing mechanism is very difficult to achieve in reality, in comparison to the fixed pitch quadcopters.
- Increased cross-axial controllability: Quadcopters are designed to have their center of gravity at the center and its weight spread over a wider surface area, thereby making it more aerodynamic. Also, the sheer location of their battery, Electric Speed Controls and Flight Control Board relative to its entire frame allows for greater stability and controllability. Additionally, this lower C.G. affords easy stability when a payload is attached relative to a single propeller drone.
In general, the above reasons highlight why quadcopters dominate the drone market and remain arguably inexistent in commercial aviation.