Drone crash refers to the uncontrolled crash of drone caused by interference or internal hardware failure. When a drone is out of control, experienced pilots may be hurry-scurry but still have some ways to salve their drones; but for inexperienced newbies, it is like a nightmare and there is a great chance of crash.
In order to reduce the occurrence of drone crashes and the loss it causes, we summarize some reasons for drone crashes and the countermeasures for your reference. You are welcome to supplement.
Magnetic Compass Interference
The magnetic compass of the drone is a magnetoresistance made of a special semiconductor, which is used to correct the gyroscope. When a drone is near a bridge, high-voltage lines or metal buildings, the magnetic field of metal or wires will interfere with the magnetic compass to some extent. If the magnetic compass is disturbed, it will provide wrong data to the flight control. When the data deviates from the direction calculated by the flight control by more than a certain level, it will cause excessive compensation of the navigation algorithm, pulling the drone to suddenly fly in one direction.
So stay away from metal buildings when flying. n this case, don’t panic and don’t press the buttons on the controller. You should immediately turn on the attitude mode, look at the head and tail of the drone and fly back manually.
Image Transmission Delay Caused by Over-horizon Flight
At present, the remote control distance of most drones is about 500m-1000m. Even if they fly to the limit, they still fly within the range of pilots’ sight, and most drones have the setting of automatic return. However, when the drone enters complex terrain, it is often out of sight. At this time, pilots can only rely on the image transmission of the aircraft to remotely control the aircraft. When the drone exceeds the remote control distance, the image transmitted will be delayed or even disappear. If you fail to take evasive action in time when encountering obstacles, the aircraft may have been sacrificed before you do this action. In this case, the possibility of drone crash is very high. Even if the automatic return function is used, because of the unknown environment, it may hit obstacles on the way back, resulting in an aircraft explosion.
The correct way is to fly the drone as high as possible, so we can see it. The image transmission can also be connected to the drone by restarting the picture transmission interface. Then it’s much safer to use the automatic return or directly control the drone back.
Environmental Factors
Strong wind, heat, humidity, coldness, low air pressure… Humans can generally overcome these harsh environmental conditions, but not necessarily drones. If a drone flies in this type of extreme weather, it is bound to be very dangerous. The strong wind will directly blow the drone away, overheating will cause the system to halt, the humidity will lead to the moisture and short circuit of the drone’s internal electronic system, the coldness will lead to the accelerated discharge of the drone’s battery, low air pressure will reduce the lifting power of the drone and cause a crash.
If you have to use your drone in extreme weather, make sure that the drone is in an overall fit condition and that matching accessories. Take batteries as an example, for using your drone in over-heating temperatures, choose high-temperature batteries as they have raw materials that are resistant to high temperatures, increased heat dissipation, etc. There are also low-temperature batteries, waterproof and moisture-proof batteries, smart batteries with BMS, etc. that can reduce the impact of environmental factors on your flight.
Low Battery Power
Although almost all drones now have the function of low battery alarm. But even so, the drone could still crash because of low battery power. In aerial photography, the pilot will try to focus on the control of the drone and the picture taken, often ignoring the potential danger. In order to seek the best scenery, pilots occasionally fly the plane high and far. When the drone is far away, they may find that the battery is too low to return.
Therefore, before the flight, we should carefully check the battery power. During the flight, in addition to ensuring the normal flight, we should also pay attention to whether the battery power is enough to return the drone.
Artificial Operation
Operational error due to lack of experience is also one of the important reasons for drone crashes. Most drones have a teaching mode for newbies. For newbies, as long as they learn and operate step by step according to the instructions of the teaching mode, there will basically be no problems. After repeated practice, newbies can successfully become experienced pilots. What’s more, seeking thrilling experiences and put drones into a dangerous environment is also a factor leading to drone crashes.
For more information about drone, UAV, FPV,RC, please stay tuned to Tattu & Gens ace.