How to choose the right battery for the drone?
- Battery capacity: usually in milliampere-hour (mAh) unit. The larger the capacity, the longer the drone is likely to last, but the battery will also be heavier. There is a balance to be found between the need for endurance and the carrying capacity of the drone.
- Discharge ratio (C number) : indicates the maximum discharge capacity of the battery. The high-rate battery can provide a larger current output to meet the needs of the UAV power system. If the battery discharge rate is insufficient, it may lead to insufficient power or overheating of the battery.
- Voltage stability: Stable voltage output helps to ensure the stability of UAV flight and the normal operation of electronic equipment.
- Weight and size: To ensure that the battery can be adapted to the installation space of the drone, while not making the drone too heavy and affecting the flight performance.
- Brand and quality: Well-known brands are usually more guaranteed in terms of battery safety, performance and reliability.
- Charging performance: including charging time and number of charging cycles. Better batteries can withstand more charge cycles and last longer.
- Temperature adaptability: It can work normally under different ambient temperatures, especially under high or low temperature conditions.
Which of the following battery types is commonly used in high-end drones?
- nickel-metal hydride battery B. Lithium battery C. Lead-acid battery
The answer is B: lithium batteries.
Lithium batteries have the advantages of high energy density, light weight and low self-discharge rate, which can provide strong and lasting power support for high-end drones.
Nickel-metal hydride batteries have relatively low energy density and large weight, which are not suitable for the performance and weight requirements of high-end UAs.
Lead-acid batteries are heavy, low energy density, and have a short cycle life, and are generally not used for high-end drones.
Take these factors together to choose the right battery based on your drone model, flight needs and budget.
In order to extend the endurance of the drone, which of the following methods is good?
Optimize battery technology and energy management systems.
The use of batteries with higher energy density and larger capacity can directly increase the amount of electrical energy a drone can carry. At the same time, advanced energy management systems can better distribute and utilize electrical energy, reducing unnecessary energy loss.
Reducing the weight of drones can also help, but not as much as optimizing battery technology. Because weight reduction reduces the energy consumption of the flight, but the total amount of electricity you can carry does not increase.
Improving the UAV's power system and flight control algorithm to improve flight efficiency can save power to a certain extent, but the effect of this way is usually not as direct as that of optimizing the battery.
To sum up, optimizing battery technology and energy management systems is the way to extend the endurance of drones.
Updated flight control system software:
- Watch for updates to the flight control system software issued by the manufacturer. The new software version may optimize performance, fix bugs, or add new features.
- Follow the instructions for software updates to ensure that the drone and remote control remain fully charged and connected during the update process.
Proper charge and discharge maintenance of the battery:
- Avoid overcharging and overdischarging, and unplug the charger promptly after charging.
- When not in use for a long time, keep the battery power at about 50%, and carry out a charge and discharge cycle every once in a while to maintain the battery activity.
- When charging and storing batteries, choose a well-ventilated, dry and suitable temperature environment, away from flammable and explosive materials.
In addition, it is also necessary to check whether the power and button function of the remote control are normal, and use a special storage box when storing the drone to avoid collision and extrusion.
What is the usual way of communication between the remote control of the drone and the drone?
- Radio Frequency (RF) communication: This is one of the common ways. Common frequency bands include 2.4GHz and 5.8GHz. RF communication has longer transmission distance and better stability.
- Wi-Fi communication: Some consumer drones may utilize the Wi-Fi protocol for data transmission. But Wi-Fi has a relatively limited range and is susceptible to interference.
- Bluetooth communication: In some small, low-power UAV systems, Bluetooth can be used for simple control and data transmission over short distances.
What characteristics do the airframe materials of drones need to meet?
- Light weight: helps to reduce the overall weight of the UAV, improve flight efficiency and endurance.
- High strength: It can withstand various stresses and shocks in flight to ensure the stability and safety of the fuselage structure.
- Corrosion resistance: adapt to different environmental conditions, including humidity, acid and alkali environment, to prevent damage to fuselage materials.
- Good thermal stability: In flight may be affected by temperature changes, the material must be able to maintain stable performance.
- Low damping: reduce air resistance and improve flight performance.
- Good processing performance: easy to manufacture complex shapes and structures to meet design needs.
- Reasonable cost: On the premise of ensuring performance, the material cost should not be too high to control the overall cost of the UAV.
Is there a limit to how high drones can fly?
In different regions, there are different regulations on how high drones can fly. In general, without special permission, the flight height of civilian drones is usually limited to about 120 meters.
What safety precautions do you need to pay attention to when flying drones?
- Understand and comply with local laws and regulations, including flight area restrictions, flight height restrictions, no-fly areas, etc.
- Pre-flight inspection: ensure that all parts of the drone are intact, the battery is sufficient, the propeller is not damaged, and the sensor works normally.
- Choose the right flight environment: avoid crowded areas, airports, military restricted areas, high-voltage lines, bad weather, etc.
- Pay attention to signal interference: Avoid flying in areas with strong electromagnetic interference to ensure stable communication.
- Keep the line of sight: Ensure that the drone is always in line of sight when operating.
- Pay attention to the battery status: prevent the UAV from falling out of control due to insufficient power.
- Plan your flight path in advance: Avoid bumping into obstacles.
- Respect the privacy of others: not without permission
- Make flight records: including flight time, location, condition, etc., for follow-up inquiries.
- Emergency preparedness: be familiar with the emergency operation process, and take timely measures in case of emergencies.
- Pay attention to the flight attitude: adjust the attitude in time to avoid excessive tilt or unstable flight.
- Return setting: reasonable setting of automatic return height and power threshold to ensure safe return to the departure point.
What are the common failures of drones?
- Motor failure: the motor may have problems such as gridlock, stall, burn, etc., resulting in insufficient power or inability to fly the UAV.
- Battery failure: such as battery aging, bulging, rapid depletion of power, unable to charge, etc., affecting the endurance and normal operation of the UAV.
- Flight control system failure: it may cause the UAV to lose control of flight attitude, unable to hover stably, unable to fly according to instructions, etc.
- Communication failure: The signal between the remote control and the drone is interrupted or unstable, so that the control instructions cannot be transmitted in time.
- Sensor failure: For example, the failure of gyroscopes, accelerometers, barometers and other sensors will affect the positioning, altitude measurement and attitude control of the UAV.
- Propeller damage: propeller rupture, deformation or imbalance, affecting flight stability and power output.
- Camera failure: can not shoot normally, image blur, picture lag, etc.
- GPS positioning failure: The UAV cannot accurately obtain position information, affecting navigation and positioning functions.
- Circuit failure: short circuit, open circuit or poor contact of the line, which may cause some functions to fail.
- PTZ fault: PTZ can not stably control the camera Angle, affecting the shooting effect.
Is it necessary to buy insurance for drones?
On the one hand, if your drone is expensive, buying insurance can provide you with a financial security. If a drone malfunctions during flight, crashes, is lost, or causes damage to a third party, the cost of repair or compensation can be quite high.
On the other hand, if you regularly fly in complex environments, such as near built-up areas, crowded areas or in bad weather conditions, where the risk of an accident is relatively high, insurance can cover the potential risk for you.
However, if your drone costs less, is used infrequently, and the flying environment is relatively simple and safe, you may not think that buying insurance is necessary.
In short, whether to buy drone insurance should consider the value of drones, frequency of use, flight environment and your own risk tolerance and other factors.
How to carry out daily maintenance of drones?
Clean the fuselage regularly:
- Gently wipe the fuselage with a soft, clean, damp cloth to remove dust, dirt and debris. Avoid touching electronic parts with wet cloth.
- For hard-to-clean stains, a specialized electronic device cleaner can be used, but make sure it does not cause damage to the body material.
Check if the parts are loose:
- Before and after each flight, carefully check screws and nuts at propeller, motor, and rack joints to ensure that they are tight and not loose.
- Check the mounting of the head to ensure that the camera is stable and does not shake.
Calibrate the sensor:
- Calibrate sensors such as gyroscopes, accelerometers and magnetometers regularly according to the instructions of UAV manufacturers to ensure the accuracy of flight attitude and navigation.
- Calibration can usually be done through the mobile app that comes with the drone or the corresponding function on the remote control.