How to deal with low temperature weather by drone aerial photography?

Entering 65438+February, the weather is getting colder. But compared with colorful spring, blue sea and blue sky summer, golden autumn and plain winter, it has a different style. So how to achieve "cool flying" in cold weather, and what are the skills of using drones?

Aircraft is powered by lithium battery, and the performance of lithium battery will be seriously degraded in low temperature environment. When the battery is exposed to the environment below 15C, the chemical activity of the battery decreases significantly, and the increase of its internal resistance leads to the decrease of discharge capacity, and the voltage drop increases when the battery is discharged. There are two major risks when the voltage drops sharply (the single battery is less than 3V): First, the maximum thrust of the aircraft power system is not enough to maintain flight; Second, the battery will shut down actively to avoid excessive discharge. This feature is a common problem of lithium batteries, and there is no perfect solution at present. Smart devices such as mobile phones and tablets used by everyone will also be turned off in a low temperature environment.

A self-important aircraft needs more current to maintain power; The aircraft continues to fly with large maneuver, such as when climbing at full throttle, the battery will continue to discharge with large current; In the plateau area, due to the thin air and low air pressure, the aircraft needs higher motor speed to maintain power, and the battery output current will further increase. The above situation, coupled with the low temperature in winter, further increases the battery voltage drop. If the battery takes off with low power, the initial voltage of the battery is low and the temperature of the battery body is low, and the voltage will be pulled down quickly, increasing the risk of insufficient voltage. Therefore, we have always emphasized flying with full charge.

In view of the above problems, I suggest you take the following three steps:

1. Before flying, be sure to fully charge the battery to ensure that the battery is in a high voltage state.

2. Fully preheat the battery to above 20 degrees to reduce the internal resistance of the battery. It is recommended to use the battery preheater to preheat the battery.

3. Keep the plane hovering for about one minute after take-off, so that the battery can fully preheat itself by using internal heat and reduce the internal resistance of the battery.

When using aerial vehicles in winter, besides routine inspection items, the following contents should also be noted:

1. Before taking off, make sure that the remote controller, aircraft and monitoring equipment are fully charged.

Second, pay attention to observe the temperature of the aircraft battery. When the temperature is below-10, it is forbidden to use the battery. When the battery temperature is-10 to 5, it is necessary to keep hovering at low altitude after take-off to preheat the battery. When the temperature reaches above 5, you can fly normally. It should be noted that if the ambient temperature is too low (for example, below -20), hovering at low altitude may not be able to preheat the battery, so other methods such as preheater should be used to make the battery temperature above 5. The best use temperature of the battery is 20℃, and the battery temperature should reach 20-25℃ before normal flight.

Third, use battery insulation stickers or other insulation measures.

Fourth, avoid greedy flying. It is recommended to set the low battery alarm to 50%. Because the voltage will drop very quickly in a low temperature environment, you should return as soon as possible after giving an alarm.

Five, pay attention to the amount of rod, try not to operate with large amount of rod for a long time.

6. If you take flight shots on snowy days. (Gao Dawei does not recommend flying in this environment)

After the flight, the plane needs dehumidification and sometimes even freezes. The treatment method is to wrap the napkin with good texture to absorb water, and observe it at any time to prevent the liquid from entering the plane.

Seven, in the case of severe low voltage, the plane will make a forced landing. At this time, keep the throttle lever in the middle position, and the plane cannot hover. In this case, you must keep calm. During the descent, the plane is still in a controllable state. You can keep the plane hovering or rising slowly by pushing the throttle upward, and control the flight direction by operating the joystick to control the plane to land in a safe zone.

About Shenzhen Gaoju Innovation and Technology Development Co., Ltd. entering the enterprise store

Shenzhen Gaoju Innovation and Technology Development Co., Ltd. takes "technology, starting with happiness" as its concept, and is determined to provide consumers with high-quality UAV products that are safe, reliable, portable and easy to use, and cost-effective.

Innovation is rooted in China's innovation capital-Shenzhen Special Economic Zone. Looking ahead, the UAV industry will become a pillar industry in Shenzhen. At present, Shenzhen's consumer-grade UAV industry is in the forefront of the world, and it is in a leading position in market share, R&D and manufacturing capacity, application breadth and depth. High innovation will be based on advanced manufacturing technology, supported by innovative frontier technology, and make positive contributions to the intelligence and popularization of unmanned aerial vehicles.

Gaoju Innovation currently has a professional UAV manufacturing base of 1.3 million square meters, and has a complete UAV manufacturing chain from product research and development, mold manufacturing, processing to product assembly, which has created a solid manufacturing foundation for UAV research and development.

Since the establishment of 20 14, the R&D center of innovative UAV has attracted a large number of high-end talents. The team members include international students who graduated from well-known universities at home and abroad, as well as senior technical talents from large international enterprises. With the geek spirit, we will jointly build a modern science and technology enterprise with happiness as its mission, innovation as its driving force and science and technology as its guide. The future of drones is unlimited, which requires the joint efforts of every colleague in the industry. Innovation is willing to work hand in hand with friends in the industry to jointly promote the prosperity and development of the UAV industry.