The "explosive machine" often mentioned in the drone industry is not an aircraft explosion. Even if an accident occurs, the aircraft model rarely explodes. The bomber is not terrible. It is important to learn from the failed flight experience and avoid accidents with repeated causes.
Today, I analyzed the main reasons for the drone bomber~
The aircraft just flew together and leaned to one side
Sometimes it is directly rolled over.
Status analysis:
First of all, the order of the blade device is checked. The aircraft is undergoing a process of speeding up the motor during the take-off process. The rotation of the propeller also causes the sound of the take-off to become larger, and the wind caused by the propeller will blow dust or even sand on the ground. At this point, most of the novices will feel nervous or hesitant, and they will not push the throttle more. In this tangled process, the aircraft is very prone to rollover. That is because the flight control of the aircraft before it left the ground has not yet begun to interfere with the balance of the aircraft. The aircraft may not have a level when it takes off. The landing gear does not leave the ground at the same time when it leaves the ground. This causes the flight control to intervene in the flight attitude in order to correct the balance. At this time, if it is not properly operated, it is easy to cause rollover.
Solution:
When taking off, it is clean and neat, push the oil evenly, don't bring other rudders, let the aircraft quickly leave the ground as soon as possible, and then collect the oil to control the flying height.
The aircraft swayed after taking off from the ground.
I feel that I will push the throttle again.
Status analysis:
When the aircraft is just taking off, it is a very normal ground effect to produce proper sloshing. The shaking under normal conditions will not be great. After the aircraft is raised, as long as it does not continue to shake, you don't have to worry too much.
Solution:
When taking off, the throttle should be pushed evenly, the flight attitude should be properly corrected, and the flying height of the aircraft to the stable airflow should be raised as soon as possible.
The aircraft quickly flew to one side after taking off, and the direct bomber
Status analysis:
After the aircraft took off, the remote control did not interfere with the flight attitude, but the aircraft quickly flew to the side of the uncontrolled bomber. This situation is mainly caused by two reasons. First, the spinner button of the remote control joystick is not adjusted, or the rocker neutral position is offset during the aircraft self-test. Second, the setting of the flight control and the direction of the flight control device are correct. If the flight control device is wrong or the blade device is wrong, the rollover phenomenon will occur.
Solution:
â–ª Develop good flight habits, the remote control of the flying hand should be kept by yourself, and the remote control should be stored in the remote control box when not in use;
â–ª Try not to let others touch and play;
â–ª Confirm the center position of the remote control before flight to avoid accidental collision and affect the middle position of the remote control;
â–ª The aircraft strictly checks the installation position of each component before take-off to avoid flight accidents caused by incorrect installation positions.
Feel the aircraft unattended during flight
The throttle can not be pulled up, and the last bomber
Status analysis:
There are two main reasons for this situation:
First, the situation in which the aircraft is dropped is often caused by insufficient battery power. For beginners, the battery's power and proper use are top priorities in flight work. Only the normal operation of the battery can guarantee the normal flight of the aircraft. Novices often feel that the flight time is very short. Just after adjusting to a satisfactory flight state, there is no power. I feel that I have not reached the limit of battery life. In fact, the discharge condition of the battery is affected by many factors. The power consumption status can be grasped in real time through the auxiliary equipment such as the ground station and the OSD, so as to grasp the flight time and route arrangement;
Second, the downdraft in flight can also cause the aircraft to fall for no reason. However, this situation mostly occurs in complex flight terrains such as valleys and buildings. When flying in complex terrain, always pay attention to the movement of the airflow and the flight attitude and speed of the aircraft, and adjust the aircraft to meet the airflow safety flight.
Solution:
â–ª The use of flying batteries should not be charged, but not placed, but not hot, not fully charged. When storing batteries, try to keep about 30% of the power;
â–ª Try to charge the day before the flight, avoid full-time transportation for long-distance transportation, etc., and develop a good flight habit to use the measuring instrument to check the battery condition before the aircraft takes off, and make the last pass for the flight power security;
â–ª It is recommended to avoid flying of these complex terrains as much as possible, or to maximize the flow to the last smooth flow when the airflow changes. The flight of complex terrain is the difficulty of unmanned aerial vehicles, especially between the flight of the valley and the flight between buildings. The analysis of the ascending and descending airflow depends not only on the common sense of airflow, but also on the flight technology by virtue of excellent flight technology.
The remote control distance of the aircraft is sometimes very short.
Sometimes I flew to the tree or lost control after the building.
Status analysis:
The remote control distance of the aircraft is related to the performance of the aircraft and also to the flight environment. The 2.4G remote control we currently use has a theoretical remote range of 1 km. The 72-megabit remote control signal before the intersection is stable and the anti-interference ability is enhanced. However, in the face of obstacles, the 2.4G remote control will still be affected. Significant impact.
Solution:
â–ª In order to avoid the influence of the obstruction on the signal, the aircraft can do the flight within the eye-range range during the aerial photography work, which not only does not affect the work of the aircraft, but can enable the aircraft to complete the aerial photography work more efficiently;
â–ª If you are flying between a building and a valley, try to choose a compromised take-off site to fly within the range.
The aircraft flies far away and can't see the direction of the head and tail. I don't know how to steer to fly back.
Steering the aircraft to one side but flying in the opposite direction, and finally losing control of the bomber
Status analysis:
Since the structure of the multi-rotor is a symmetrical figure of four, six, and eight axes, a situation in which the flight attitude cannot be recognized is likely to occur in the air. Once the head and tail identification is wrong, it will cause the so-called reverse rudder phenomenon, that is, the remote control steers to the left but flies to the right. This situation is very dangerous when repairing the flight attitude, and it is easy to cause rollover.
Solution:
â–ª Install an identification logo on the aircraft to easily identify the head and tail direction. If the arm or the landing gear in different directions are identified by color and LED lights, the flight attitude can be easily recognized during the flight to accurately control the aircraft;
â–ª When flying too high and can't see the flight attitude, you can also use the video signal sent back from the picture to identify the surrounding landmarks and calmly judge the correct posture of the aircraft.
Did not pay attention to the flight time, I feel that the battery has not been powered up until the rated flight time.
The remaining power is insufficient to fly back to the take-off site, resulting in the final bombing due to lack of electricity.
Status analysis:
Novice flight often feels that the flight time is not enough, as if the time of the departure has arrived. These are errors in flight time perception caused by poor control of the aircraft, or the battery cannot be discharged normally due to cold and high altitude weather and terrain.
Solution:
â–ª Feel the length of flight time by practicing the flight simulator. In actual flight, the flight time and power can be monitored through the OSD overlay system;
â–ª Detect the voltage of the flight through the flight ground station, and control the flight distance in time to achieve safe return.
The aircraft suddenly began to violently sway and accelerate down during the descent, no matter how the remote control is operated, it cannot be stabilized.
Eventually led to side blasters
Status analysis:
The sloshing of the aircraft during the descent may be caused by two reasons. The first is the cause of airflow. Taking off in a complex ground environment site may cause the ground airflow to be confusing during the descent. For example, take-off in a small space is relatively easy to take off, but due to the complex terrain, it is easy to be affected by the complicated turbulence of the ground when landing, and it is easy to cause landing and rollover when the control is not good. The second reason is that it is possible to manually drop the speed too fast. The speed of the propeller caused by the excessive closing of the remote control is reduced, resulting in a corresponding decrease in power and shaking of the aircraft. In the GPS mode, the landing speed can be limited, and there is no problem that the landing speed is too fast in the correct setting state.
Solution:
â–ª Choose a suitable take-off site and try to take off in an open, flat place so that the airflow is relatively flat during landing and the landing is relatively safe;
â–ª Reasonably control the amount of throttle. When the sway is found, adjust the throttle properly and master the rudder of the descent.
The following is a summary of the following ten common environmental factors that may lead to the experience of flying bombers (according to the flying hand data):
heavy rain
“Because I have been flying for many years and I have experienced a lot of experience, I would like to talk about one of the impressive ones. I once flew a surveying and mapping project at the junction of Guangdong and Jiangxi, using a fixed-wing fixed-wing aircraft. The aircraft is relatively large and carries value. The 40-500,000 Freescale camera is relatively heavy. When the aircraft performs a mission in a test area 75 kilometers away from us, it will suddenly open a heavy rain on the side of the survey area. The ground engineers will report the aircraft situation in time. The angle of shaking is too large, the airspeed is unstable, and the altitude is dropped at any time. I judged that the plane might be experiencing heavy rain and rain.
Immediately order the ground station to drop the height, find the county town with normal weather nearby on the mobile phone network, find the county coordinates, and immediately command the ground station to change the drone position! Uploading the new coordinates of returning to the ground, we drove at a high speed to reach the plane in the rainless county town 100 kilometers away. At that time, the altitude of the plane was dropped from the original altitude of 1800 meters to the relative altitude of 400 meters, and then the aircraft received the command and then pressed. Our new upload route flies to another city to fly.
As the weather improved, the attitude of the aircraft began to normal, the airspeed report was normal, and the altitude gradually increased. We deeply squeezed a sweat. When we arrived at the rainless city, the plane had hovered there early and waited for the landing. Finally, we found a road with fewer people and less cars. Thankfully, the data planes are all in good condition.
Imagine if the aircraft did not make a good treatment in time, it would be photographed by heavy rain. What should I do if I get to the people? Therefore, the person in charge of the flying drone, not picking up the remote control will take off and land, think that he is no problem, the most important thing is how to deal with emergencies. The drone is a comprehensive classroom, which requires technical skills and safety considerations. You can only say that it is a qualified flight manager by taking into account the circumstances that will happen, will not happen, and the emergency plan. â€
Wind speed
"Talk about an impressive story about playing a model.
The first time I was flying outdoors, holding a model airplane of 200 yuan, my curiosity was also great. I always wanted to try how high this thing could fly. So I put on a new battery and took off in a large empty field against the 3rd wind. At first the breeze was fine, getting higher and higher, so high that I could only see a small black shadow. At this time, the wind was big, the model began to float to the right, and the speed was very fast. People could not distinguish the direction of the nose below, and they would like to hit the left in the direction of takeoff. Finally, the big tree blocked the line of sight and the direction was reversed. The model has drifted away. When I realized that it was the opposite, I rushed back and hit me. What surprised me was that after about 20 seconds, the model appeared again in my sight. But the battery was dead, and the power was directly suspended in the tree. After some twists and turns, I got it down again.
It is recommended that you control the altitude as much as possible during the flight mode and pay attention to the wind speed. I can only share some flying skills with Xiaobai like me: I must do all kinds of inspections before the flight, the return point of the compass battery, etc. After flying, novices should not fly too high. The front and rear throttles must be nudged. After mastering the strength, you can slowly do some flying moves, such as drawing a circle and a character. â€
Dark, hazy
"I once took a picture of the night view of a bridge. It was not too far away. It was more than 300 meters high and more than 600 meters away. It was dark because of the darkness of Taiyuan. The night light was hard to see. Clear (highone does not have a night light, I used a few frog lights, tied to the arm and flashed.) The plane flew more than 300 meters, a little fog can not see, so only look at the lens The image and flight data returned are used to determine its position.
Suddenly there was nothing in the blink of an eye, the communication on the app was broken, and the screen was black. At the time, my head was blank for a dozen seconds, and I felt that I was in trouble. After returning to God, I tried to cut the automatic return flight, try it, the dead horse is a living horse doctor. After more than a minute, I heard the sound of the propeller over the air. At this time, the pictures and communication were restored. I lowered the plane and sweated. â€
Hot weather
"I once had a runaway bombing incident with my friend during the summer flight. Later I learned that it was because the weather was too hot and the flight control crashed. The poor Xiaowu fell on the tree trunk of a towering tree. We can't reach the bridge, and many of the people are still hanging. I am the only girl, the weight is light, just at the top of the bridge. Although it was later taken by the garden workers, but this is my life. A stack of bridges."
Low temperature
"CCTV last year a documentary about intangible cultural heritage, Chagan Lake winter catch, that is our first low-temperature flight, about 20 ° below zero, flying S1000, once the plane suddenly smashed, flying hands panic Oil, the plane turned off the blade and broke one third.
Our spare paddles are used up. After consulting the technology, the other blade that has not been broken is cut into the same blade. The plane can also fly, complete the shooting, and use the plane to shoot a person from the big factory. Going out, passing through a gate and pulling up to take a shot of the entire fishery, this is a more difficult shot. â€
altitude
"We went to Tibet nearly two years ago. It was the Elf 2. It was also testing how much the small plane flew at the highest altitude. The elf 2+gopro3+ used to go to Ramlaco, Tibet. The altitude of the area was more than 5,000 meters. The plane flew up. After that, it suddenly fell down. It is estimated that it will reach the limit. When it falls down, it will fly again when it crashes. This is a test for the high altitude of the aircraft, and it is very impressive."
Power plant electromagnetic interference
“Debugging the aircraft. Xiyuzhuang in Tianjin is a famous shantytown. At that time, it was going to be demolished. The Prime Minister and others have come to inspect. We received the task of transforming the aerial squatter area of ​​the TV station, that is, we put the image of this land. The information was left. The left side of the block is a power plant, and the right side is the Tianjin West Railway Station. The electromagnetic interference is particularly large, but we don't know. We used the six-axis leap, the Gopro, the naza V2 flight control, and the GPS, 10 stars take off, fly forward to go more than 200 meters, when the plane pulls back, the plane is out of control, but the picture is still there, the cloud platform is still pendulum, I was forced to cut the manual manually, use manual flight or out of control, and pull back The attitude mode was stable. At this time, the plane had already flown in the opposite direction. It was not controlled and had been flying. Finally, it was safe and sound.
I have had a long experience since that time, and I have to turn around when I don’t understand the environment. Because there are wires around the shantytown, the GPS must be unplugged when flying. â€
wire
"The fly is the realization of Dajiang. There is a wire pulled out from the scene about 100 meters away from the scene. However, the site drawings provided by the crew do not have this line. When the plane flies, it hangs on this line. It happens to have a group play below. The old man, the plane directly hit the person, and it is more coincident that there is a 3 meter deep ditch next to it, the old man fell directly, and finally caused the 7 ribs to be broken. After this incident, we will take over and use it. In a few hours, check with the cloud platform to eliminate any potentially dangerous hazards. Finally, I advise everyone to use a small bomb and a small amount of personal safety. Try to avoid flying over the crowd. Please fly carefully and check carefully."
telephone pole
"Remember that it was to help a friend take some pictures. The drone's nose was facing me. At that time, the drone approached the pole during the flight. Underneath was the crowd of people watching. At this moment, the pole of the aircraft A little close, the flight began to appear control failure, left and right swing, I was not rescued in time, hit the pole. The drone quickly fell, because the propeller hit the ground, the machine ran, panic caught, but fortunately did not wear injuries ."
Satellite signal interference
"In August 2016, we took a cruise from Xiamen to Okinawa. When I mentioned a flight mission with a friend, he repeatedly stressed that you should never fly on a cruise. I was prepared to fly. I asked him why he had a The friend went out to play by the cruise ship, and the two planes flying all went out of the sea. Later I tried it on the ship. The elf just fell off the ground because of GPS interference. I tried it several times because of the TV and telephone on the cruise. Internet access, etc. all use satellite signals, which is particularly strong against aircraft."
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