How do drones fly?

How do drones fly?

How do drones work, and what are their main features?

Drones are becoming increasingly sophisticated and are therefore being used in more and more areas. They are not only used for entertainment, but in many cases, they also help in the professional development of people, for protection from accidents, rescues, observation of animal species, and much more. The list is long, and the capabilities of drones are constantly growing with time.

Although these machines are considerably small in size, they are changing our world and helping us experience new exciting moments. However, not everyone understands how drones function and what helps them to be so effective in the tasks we set them. Here, we'll take a closer look at the specifics of drone technology.

How do drones work?

Drones are unmanned aerial vehicles, or UAVs for short. They are essentially a flying robot that is remotely controlled by a controller. Modern drones have a number of onboard sensors and a GPS system.

These unmanned flying machines have been created for military purposes, for various reconnaissance tasks and even for attacking enemy teams. Today, however, the application of drones is more than impressive because we can increasingly see how useful they can be. Nowadays, drones are used in rescue operations, monitor endangered species, monitor farms and oil rigs, and regulate traffic in large cities. Of course, they are very popular in various areas of photography and videography.

The size of drones and their technical capabilities can vary according to their intended use. Smaller models are mainly used to capture amateur or professional footage.

Basically, we can divide drones into two types - fixed wing or propeller.

Drones come in two main types: fixed wing and propeller. The first type is exactly what the name implies - a small aircraft with wings fixed to the main body. In the latter, flying is done forward to generate lift and get the machine airborne.

In the second type, the propellers rotate and are attached to motors that drive them. When rotated, the propeller moves against the air, pushing it down, and the drone thus lifts up.

Types of propeller drones

Drones that fly via propellers can also be basically divided into two types - single-engine and multi-engine. Single-engine drones are extremely rugged and stable and very similar in appearance to helicopters.

Multi-engine drones are the most popular today, being used by hobbyists and professionals alike. They are the smallest in size and the most affordable in price. The types of rotary drones are named according to the number of rotors they have. The most used ones are tricopters (3 rotors), quadcopters (4 rotors), hexacopters (6 rotors) and octocopters (8 rotors).

We can confirm that quadcopters, drones with four motors and four propellers, are the most popular.

How do drones fly?

We'll take the most popular type of drone, the quadcopter, as an example to look at how they work.

The propellers of quadcopters literally scoop up the air and thus rise above the ground and overcome gravity. This is very similar to swimming. Think about how we manage to swim using our limbs. We scoop up the water and push ourselves out, thus moving and staying above the surface. Similarly, scooping air and flying happens in drones.

Once the drone is above the ground, it can fly in all directions, spinning its four propellers.

Control of the drones is done remotely through a controller that is connected to the machine. You set the desired settings, and the remote controller sends a radio signal to the machine. Additionally, you can use different flight modes that help the drone fly autonomously, track objects, avoid obstacles and much more.

If the drone has a GPS system, you can task it to move to a certain point. Also, you can choose to save a route for the drone to fly on your command on some models. This is very useful when monitoring specific areas.

The drone's built-in sensors also allow the use of one of the most useful settings - obstacle avoidance. When the sensors detect that there is an object nearby that the drone could crash into, they send a signal to the controller and the pilot can take timely action. Should the drone get too close to the hazard, it stops or stays in place until other settings are set. The machine is protected even if the batteries run out in this mode - it automatically starts searching for a safe landing spot via its sensors.

If you found this article interesting, check out the rest of our blog. COPTER.BG offers different types of drones designed for hobbyists and enthusiasts and for professionals in the field of aerial photography, imaging, or precision agriculture. You can see our offers here.