The use method of multi rotor aircraft is as follows:
Now, UAV equipment has got rid of the height of “beyond expectation” and began to slowly enter the life of the general public. However, UAV is not a remote-controlled aircraft toy, nor is it a tool that can be controlled in a few words in the manual. It not only requires operators to receive professional and rigorous training, but also pay attention to every detail in the operation process, because once there is a mistake, it is easy to cause disaster.
A large part of the accidents during flight operation are due to the lack of careful inspection of the aircraft in the early stage. Any small problem on the aircraft is likely to lead to major accidents during flight. Therefore, sufficient inspection should be done before flight.
1. Before power on
(1) Check whether the propeller is intact and whether there are stains and cracks on the surface. Check whether the installation is tight and whether the forward and reverse propellers of the propeller are installed correctly. Turn the propeller to see if there is interference.
(2) Check whether the motor snap ring is firm, whether the rotating motor is jammed, whether the interior of the motor coil is clean, and whether the motor shaft is obviously bent.
(3) Check whether the frame is firm and whether the screws are loose.
(4) Check whether the pan tilt steering gear rotates smoothly, whether there is interference, and whether the pan tilt and camera are installed firmly.
(5) Check whether the Velcro is secure and whether the battery is fixed.
(6) Check whether the center of gravity position is correct.
(1) Check whether each plug link is tight and whether the welding part between the plug and the wire is loose (DuPont plug, tx60, t plug, banana head, etc.).
(2) Check whether the outer skin of each wire is intact and whether there is scraping and peeling.
(3) Check whether the electronic equipment is firmly installed, ensure that the electronic equipment is clean and complete, and do a good job of protection.
(4) Check whether the electronic compass and IMU point correctly.
(5) Check the battery for damage, flatulence and liquid leakage. Measure whether the voltage is sufficient.
(6) Check whether the remote control mode is correct, whether the power is sufficient and whether the switch is intact. First look at the remote control and then power on the aircraft.
2. After power on
(1) Check whether the electric adjustment indicator tone is correct.
(2) Whether the steering gear works normally and whether there is high-frequency jitter.
(3) Whether the electronic equipment has abnormal heating
(4) Check whether all indicators are normal.
3. Pre flight
(1) Push the accelerator slightly, observe whether each rotor works normally, lift the aircraft and shake to see whether the aircraft can stabilize itself.
(2) Fly back and forth, left and right, spin, observe whether the flight of the aircraft is normal, check whether the rudder amount of the remote control is correct and whether each working mode is correct. Whether the PTZ works normally.
(3) Fly a four sided route. Carry out several large maneuvers to observe whether the aircraft works normally.
The speed of a flying multi rotor aircraft can reach 40km / h. if it loses control and falls, the consequences will be unimaginable. Therefore, a qualified pilot should not only make careful pre flight preparations (for the contents of pre power on, post power on and pre flight, see the operation must know I of last week), but also pay close attention to various states of the aircraft in flight and ensure the daily maintenance of the aircraft.
4. In flight:
(1) The pilot should always know the attitude, flight time, position and state of the aircraft.
(2) Ensure that the aircraft and personnel are at a safe distance, otherwise adjust or land.
(3) Ensure that the power of the aircraft is sufficient for its return and safe landing.
(4) In case of long-distance or over the horizon operation, the monitoring personnel shall closely monitor the flight altitude, flight speed, battery voltage, number of satellites and other information of the aircraft in the ground station, and timely inform the flight controller of battery voltage, flight altitude and other information or other accidents.
(5) If the aircraft loses control due to the loss of satellite in flight, switching the flight mode can regain the control of the aircraft and land as soon as possible.
(6) When the aircraft loses its attitude information at a long distance, keep calm, and re understand its attitude by slightly adjusting the rocker to observe its moving direction.
(7) Automatic return is a support function. Due to many design factors, it can not ensure safety. Generally, it is not used actively, but only as an additional guarantee for aircraft safety.
(8) In case of major aircraft failure, personnel safety shall be ensured first.
5. After flight:
(1) After the aircraft lands, ensure that the remote control is locked. First cut off all kinds of power supply at the receiving end, and then cut off the power supply at the launching end.
(2) Electricity inspection, aircraft inspection, airborne equipment inspection.
(3) Relevant equipment shall be properly placed.
6. Maintenance precautions:
1. When debugging the aircraft, make sure that the propeller is not on the motor.
2. If the lithium battery is not used for a long time, it should be discharged to a single chip voltage of about 3.8V, otherwise it will greatly affect the service life of the battery.
3. The charging voltage of a single lithium battery shall not exceed 4.2V. Do not overcharge (the general charger has protection function), otherwise there will be the risk of explosion.
4. Do not short-circuit the battery. Do not pierce the battery with sharp objects. There is a risk of explosion.
5. Lithium batteries cannot be over discharged. Generally, they are discharged to a single chip of about 3.6V. Excessive discharge will greatly affect the service life of the battery.
6. When charging, pay attention to the charging current, and never exceed the maximum charging current of the battery, which is responsible for the risk of explosion.
7. Lithium batteries should be stored away from combustibles.