In the end of the SHENZHEN international drone exhibition. The Drone Racing China attract attention of many visitors, they are make up of the teams from China, the Netherlands, the United States and so on, they staged a international Drone racing in SHENZHEN, CHINA.

Although the drone racing is still in the primary stage, and a few of rules and technology needs to improve, but it has attracted many UAV hobbyists. Drone racing can fly in the outdoor or indoor, and also put up the glasses, through video transmission system to experience FPV(First Person View) drone racing.

Quadcopter in the competition, the fastest speed can reach more than 200 kilometer per hour, combined with various obstacles,lighting effects,etc.,feel so shocked. One of most famous drone racing is Dubai held in 2016, in the event, they prepared as much as $1 million bonuses, and finally the age of 15 British boy won the championship. In March 2016, organized by SHENZHEN association of UAV, joint enterprise, nearly 20 domestic industries established China’s first UAV racing league, then began to invite professional referees and drone race team, prepare the UAV racing series.

The drone racing divided into 3 level of knockout,promotion race and finals. There are total of 50 contestants, and about 5000 audiences watched the competition at contest site. Through the fierce competition, in finally, Kunhuang Li and Tao Wang who come from China win the championship and the Second. This drone racing is hold in indoor,and has the complex electromagnetic environment, it’s more difficult than outdoor,so crashing can’t be avoided. But champion of Kunhuang Li with his superior flying skills, crowned.

In this drone racing China, the champion of Kunhunag Li and the other pilots choose the Tattu battery,it not only the Tattu battery has high profile and favorable comment of rate in the UAV field, but also they test the Tattu RC lipo battery after the use of trust, so they chose Tattu batteries for this competition.

Tattu FPV battery is according to the FPV, they has moderate volume,light weight and high discharge rate. At present,through on average 4 series of lithium battery pack, nominal voltage of 14.8v, the UAV battery capacity most of the 1300mah battery, and lipo battey discharge rate around 75c, using professional 5A battery charger for about 20 minutes. Of course,there are some pilots commonly use the capacity of battery,such as1800mah,1550mah and 1050mah battery.

In the competition, the pilots of the psychological and flight skills is important, but also the performance of battery is good or bad is also very important.

The RC lipo battery has a limited life, like as human, cars. Under normal circumstances, RC lipo battery after about 200 times the charge and discharge of storage capacity to the discharge will be significantly decreased, use time is also lower. How to use the 200 times charge-discharge? Or how to extend the battery lifespan? Let’s to listen the battery expert’s recommend.

At first, charge the highest voltage of 4.20v

It’s known to all, 4.20v is always the highest voltage of lipo battery, but with the development of technology and improvement. At present, most of manufacturers of lipo battery can be safe to reach 4.25v, even more of the top technology manufacturers can achieve 4.30v, so 4.30v is the highest voltage at current technology.
Model airplane with lipo battery charger are basic set voltage 4.20v, so use charger of voltage 4.20v to charge the lipo battery is OK, but if you raise the highest voltage to charge (such as 4.35v), they will irreversible damage the lipo battery.

At second, discharge the lowest voltage of 2.75v

Maybe many hobbyists have some questions, why? After research, every RC lipo battery has stage of voltage test from 4.20v to 2.75v. No matter from the battery internal structure theory of data, or from the battery discharge measurement, the lowest voltage is 2.75v.

Remind the important thing to hobbyists,at first tell you the roughly of the battery voltage contrast parameters:
2.75V approximately equal to 0%; 3.56V approximately equal to 5%; 3.70V approximately equal to 10%; 3.75V approximately equal to 20%; 3.85V approximately equal to 50%.

If not do scientific research and the battery with high resolution, the above data can be treated as a standard data. If there couldn’t find the same leaves in the world, and also couldn’t find two pieces of the same parameters of batteries, only the parameters of similar. So more than the contrast of voltage and power relations we only use symbols to represent “approximately equal to”.
From the above battery voltage compare relations you can know, when the battery voltage to 3.56v is only 5% of the electricity, the 5% of the electricity control isn’t good, it’s easy to reach 0% of the limit value, more than the limit, the battery bilge gas immediately.

At third, within 1c charge current to the RC Lipo battery without injure. 5c charging isn’t recommend

Battery charging is a process of converts electrical energy into chemical energy, is a chemical reaction. The chemical reaction has considerable relationship with temperature and pressure. The earliest lithium battery only lithium and manganese substances, the reaction procedure for Li+MnO2=LiMnO2 is REDOX reaction.

Why the cheap RC battery pack has the using lifespan?

According to the experimental data and theoretical prove, within 1c charge current to the battery without injure. More than 2c current will cause the capacity declined slight, and then up to the 5c current, the capacity obvious reduction.

The mainly reason of capacity reduction is the battery internal material generated crystal lead to chemicals. So we use the 1c current to charge is benefits the RC lipo battery.

Source: http://www.genstattu.com/blog/why-such-a-short-time-of-rc-lipo-battery/

Ni-mh batteries A nickel Cmetal hydride battery, abbreviated NiMH or Ni CMH, is usually a variety of rechargeable battery. The chemical reaction on the constructive electrode is similar to that from the nickel Ccadmium cell (NiCd), with each using nickel oxyhydroxide (NiOOH). Even so, the damaging electrodes use a hydrogen-absorbing alloy as a substitute of cadmium. A NiMH battery can have 2 to 3 times the capacity of an equivalent size NiCd, and its energy density can approach that of a lithium-ion battery.

Lipo batteries A lithium polymer battery, or far more properly lithium-ion polymer battery (abbreviated variously as LiPo, LIP, Li-poly and others), is usually a rechargeable battery of lithium-ion technologies inside a pouch format. As opposed to cylindrical and prismatic cells, LiPos are available in a soft bundle or pouch, which tends to make them lighter but additionally less rigid.

The designation “lithium polymer” has brought about confusion amongst battery customers because it may be interpreted in two ways. Originally, “lithium polymer” represented a producing technological innovation making use of a polymer electrolyte instead of the more frequent liquid electrolyte. The result is actually a “plastic” cell, which theoretically could be thin, versatile, and produced in different shapes, devoid of danger of electrolyte leakage. The technological innovation hasn’t been fully created and commercialized and research is ongoing.

The second which means appeared soon after some companies applied the “polymer” designation to lithium-ion cells contained inside a non-rigid pouch format. That is now one of the most common use, through which “polymer” refers extra to a “polymer casing” (that is certainly, the soft, external container) rather then a “polymer electrolyte”. When the design and style is often flat, and light-weight, it is not genuinely a polymer cell, due to the fact the electrolyte continues to be in liquid form, despite the fact that it might be “plasticized” or “gelled” by means of a polymer additive.These cells are often designated as “Lipo 7.4v 5000mah“; nonetheless, from a technological viewpoint, they are really exactly the same since the ones marketed just as “Li-ion”, since the underlying electrochemistry may be the exact same.

1. Bodyweight

In each cell from the battery voltage , the NiMH is 1.2V, whilst the lithium battery 3.6V, lithium battery voltage is its three fold. The same style of lithium battery weighs lighter compared to the nickel-metal hydride batteries . We are able to see that every distinct weight battery itself , but because of 3.6V lithium battery substantial voltage, once the output voltage of the same to ensure that just one battery pack can lower the number of third leaving right after forming the battery weight and volume reduction .

2. Memory effect

NiMH batteries have memory result . Therefore, common discharge management can also be needed. This periodic discharge management belongs towards the fuzzy state to become taken care of , even some with no the best information discharge ( or perhaps a number of instances each and every discharge right after discharge are due to distinctive providers differ ) this cumbersome discharge management when applying NiMH batteries can’t be avoided . Relative lithium batteries mainly because no memory result, inside a pretty effortless and basic to make use of . It is actually fully with out regard to simply how much residual voltage , direct is often charged , the charging time can be reduced naturally .

3. Self-discharge charge

NiMH batteries from 25 to 35% ( January ) , lithium batteries from 2 to 5% ( May possibly ) . Thereby obtained , the price of self-discharge NiMH batteries a lot increased than lithium .

4.Charging

Nickel-metal hydride batteries and lithium batteries can’t overcharge resistance . As a result, the nickel-metal hydride battery frequent current charging PICKCUT control mode on the highest charging voltage , charging stops carry on because the greatest way of charging . The 7.4v 5000mah lipo battery utilizing continual existing, continuous voltage charging mode is most effective.

5. Application

NiMH batteries: buyer electronic merchandise, remote management toys , hybrid vehicles , renewable energy programs; Lithium Battery: cell phones, laptops, energy tools, electric autos, backup electrical power lights , small home appliances.

what is a quadcopter?

Quadcopters are also called multirotors, due to them having 4 or more small rotors instead of one like the traditional helicopter. Some models have more than 4 rotors and are called multirotors. As a general rule, the more rotors a drone has, the stronger and more stable it becomes. This why the more high end professional photography drones have 6 to 8 rotors, but these units are currently thousands of dollars.

How to define aircrafts?

You can find two mostly facets, the definition from the element is the number of the motor, it defines the number of rotor how much N; 2 it truly is rack wing (axis) M, the quantity of that defines the aircraft is M shaft aircraft. We normally of a spacecraft termed M axis N propeller aircraft.

About Tricopter(3-motor)

Tricopter normally has two axis during the plane forward, a shaft within the negative. So your body must seems like T or Y sort. Unfavorable motor modify plane by the rotation in the fixed on the course , tricopter is superior manage, ordinarily also rise quicker, but not drastically. Obviously, when the motor stops operation, so the plane will crash, but this type of model is relatively agile.

About Quadcopter(4-motor)

Quadcopter weight in excess of a tricopter, have been also additional possible to kind, as the quadcopter will not ought to separate to manage the parameters of single motor. They are more secure, along with the flying time is longer,you can carry a high capacity and longer battery,such as Gens ace&Tattu 10000mah battery , quadcopter by reducing the velocity of your two motor to implement the roll, as well as the other two motor can handle the entire from the aircraft.

QuadcopterX(QuadX) or quadcopter (Quad ) has distinctive wingspan, helps make the plane seems to be like an X or maybe.

About Hexcopter and Octocopter(6-moter and 8-moter)

The fundamental design of hexcopter and octocopter are very same. Rotor organized around a central point right into a round shape. There are some model install the rotor in the top rated. Y variety hexcopter looks like a tricopter, but no one in which the parameters with the rotor independent handle. To the contrary, yaw is similar for the four rotor aircraft, by altering the velocity of the motor. Compared with all the independent style and design yaw rotor, such design and style feeling not sensitive in contrast with independent yaw.

Much more rotor enables the vehicle to load better and more secure. Underneath the control on the rotor a lot more aircraft in flight controllers, when one particular or extra on the motor power, still can continue to keep the capability to fly without having crashing. But not surprisingly the total weight of aircraft and its complexity of building and is proportional to your price, along with the number of rotor also need many power supply,also will need more 3s 11.1v Lipo battery to carry.

As a beginner, quadcopter seems to be one of the best introduction to the model. They are easy to set up, and the flight is very stable. But when you start, it is better to ensure that the following two points: as simple as possible, the lighter weight, the better.

It was reported by the Wall Street Journal last year that the US billionaire, boss of the team Miami Dolphins , Stephen Ross has invested the Drone Racing League. He invested $1million through his investment company RSE Ventures. The industries of UAV have raised a question when the news came out: Is UAV contest a real sport? Nick Horbacezewski, CEO of the Drone Racing League said: “I think the game has the ability to let people resonate together because it has been not only a traditional racing game but also a game with new technology.

Recently it has been reported that the drone competition is expected to become the next emerging sporting events. Unlike most racing sports such as car racing, horse racing or dog sledding there is no driver inside the drone. Drivers need to wear goggles, and they control it according to the video camera embedded in the front of the drone. Such manipulation is known as FPV (first person video). By combining FPV and UAV that participants and spectators could experience the speeds up to 90 miles / hour and give participants an immersive, high-speed flight experience of competition.

In the United States, the two-day U.S. National Drone Racing Championships held in California State Fair in 2005. It attracted 120 participants to participated in and the prize money is reaching a high of $ 25,000. It was reported that the game was expected to attract only 60 spectators, but the videos of UAVs hit on YouTube more than a million. Moreover in France, Australia and the United Kingdom the similar evevnts have been also organized.

In China in November 2015 the International Air Robot Contest (IARC) was held at the Beijing University of Aeronautics and Astronautics, the two play-offs multi-rotor UAV “Shepherd of Action” and “remote through” were added. And the competition rules was setting based on FPV model. Both playoffs game directly push the game to a climax and the applause, screams constantly which made the entire event completely a success.
With the growing popularity of the UAVs and virtual reality goggles equipment, consumer goods of science and technology are increasingly becoming affordable. Related associations, Unions strongly promote and integrate into the modern new technology with God’s perspective of the world, the industry of UAV is bond to boil up and FPV drone competition will be growing as a high-energy movement.
Competition of UAVs is on the rise and development. it is a new industry and event planning and preparation will require a lot of time and manpower. The real development of drone competition takes time and it also faces many problems.such as the FPV battery flight time.
Currently, the UAVs on market mainly target lithium polymer battery as the main power. Endurance ability is typically between 20-30 minutes. There are some differences because of different technology but most of their flight time is less than 45 minutes while their charging time is more than one hour. The UAVs can not carry heavy battery with large capacity due to the need to minimize the weight of UAV. Most of the UAV just can maintain ten to twenty minutes in flight then it must be replaced by another battery or plug in the charging cable. So pilots often go out with three to four batteries which is regarded as a primary limits to the development of the UAV industry. To promote the development of the UAV marketing we should putting the problem how to prolong the flying time of UAV into the first place.

In September 2015 Tesla, a leader in the field of electric vehicles, announced a specific application of aerial UAV prototype. Company Tesla showed their scientificalness in rechargeable batteries. It was reported that the UAV was equipped with a 10000mAh battery and a single charge could promise a sustainable flight for 60 minutes and the charging time is only about 20 minutes. Tesla with unique skills has entered the UAV market and it is bound to have a tremendous impact on the domestic UAV battery. Everyone hope to have a kind of 2200mah lipo battery which charging time is shorter and flying time is longer. But this long-awaited product is still in the phase of conceptual designing.
The research on UAV battery has emerged in endlessly. Currently most of the new products are on the phase of research, and development of the UAVs battery can not be predicted. We hope these UAV battery can live up the expectations.

Source: http://www.genstattu.com/blog/drone-competition-is-growing-as-a-high-energy-sport/