Schlagwort-Archiv: rc racing lipo

Why Such a Short Time of RC Lipo Battery

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:

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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/

Do you want to know more things about UAVs?

With the development of Dji and X-zero, we can buy a aerial device at the price of thousand dollars which sold at least ten thousand each one. But as more and more teams enter into the market, identical function and appearance can not satisfy consumers. So the price is the major element to attract consumers.

UAV control is a technology activity. It is easily influenced by environment. Although the UAV at the mid-high level is equipped with automatic return function it still does not apply to a complex environment because of their accuracy and reaction. Moreover it is too complex for shooting when you are control ling the aircraft.

In fact, there are many areas of UAV capabilities need to be explored. Follow us GREPOW(5000mah lipo battery) to predict the new features of the UAV in the feature according to the products and technology existed.

Four axises + fixed wing aircraft = Deformable structure?

It is reported by Geeks Park a deformable UAV designed by Tesla who comes from British. The biggest bright spot of the UAV is it can meet the requirements of different shooting through its deformation. There are two different flight postures of aircrafts. When they need stability it will shoot like a “helicopter”. If you need high speed with the film it will fly immediately through becoming “tiltrotor aircraft”.

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Similarly, in an interviewing with Geeks park a domestic professional aerial equipment manufacturing company, the company’s CEO also pointed out that the four-axis aircraft flight is with few flying postures, low speed and easily to be influenced by crosswind because of the monolithic construction. But the fixed wing aircraft could remain stable under high-speed flight. If the ” Variable type ” is introduced to UAVs the environment of them could be expanded with increasing speed and high safety.

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However, because the operator can not view flight environment in time the safety of a flying UAV is not able to be improved from the consideration of structure or even may have crashed. If you want to avoid impact of the external accidents The UAV should designed with the function of avoiding obstacles by itself.

Avoiding obstacle and following with the film

Dji has released its next-generation UAV conceptual model called Phantom X it has the functions of following with the film, controlling an array of unmanned aerial vehicles with a mobile device. If you want the UAVs to fly following with the film or do a Array flight, there must be a certain autonomous founctions as obstacle avoidance and distance detection which also can be a judgement to define the UAVs.

“So many people in the production of unmanned aerial vehicles, but do not know how to prevent these things which can lead us to fall into trouble. ” said doctoral Andrew, “Laser radar mounted on drones and establish the flight path in advance is unrealistic. If we want the UAV to fly at a high speed. We need better and faster need to algorith ms.” Andrew Barry team let each UAV fly 10 meters and draw the next section of the route without considerating the flying of the following 10 meters.

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New Exploration of aerial mode

In addition to aerial and follower function with the film, with the development of panoramic camera and VR technology, unmanned aerial vehicles in the shooting mode will have some breakthrough.

Geeks Park, at a venture exchange, was also experienced drones racing team combined VR and UAV. Compared to ordinary racing machine, vision provided by VR is more extensive. But if you fly it at high speed it will definitely affect the bit rate of the return video thus affecting the image quality at the receiving end. If you want to solve this problem a more stable and efficient wireless communication should be established with the input device. Currently, wireless transmission scheme used by the majority of drones. It supports data transfer of 4M bps, and can be effectively against harmonic interference. But the maximum bit rate can only support 720P and can not meet the public demand.

 

The biggest problem is to prolong the flying time

Through a series of products’ experience and the recent exposure of a variety of news the development of the future UAV is clearly. Overall UAVs are accelerating the pace of its development in structural, technical, aerial mode and so on. But it still has a critical problem to be solved – the flying time.

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Currently lithium batteries are very popular in Civil UAVs, but the small volume of a single lithium-driven UAV flight the longest flying time is no longer than half an hour. And the time would be shorter if you want to ensure the difficult shooting not to mention the cutting-edge features such as panoramic camera and following automatically .

Two aspects we need to considerate when comes to the ability of UAV to keep flying. “power” and “Battery capacity” .To reduce power consumption, it is bound to make a considerable compromise on features, configurations. If you want UAV to be able to do more things the power consumption will be increasing. The four rotors of quadcopter and aerial itself are the major parts for power consumption so UAV battery capacity has to be increased but the overall size of which in turn will affect the UAV. We can say that the UAV can not be a breakthrough if there is no a term of battery matching them.

Source: http://www.genstattu.com/blog/do-you-want-to-know-more-things-about-uavs/

Intelligence of UAV lipo Batteries

In terms of a business perspective pattern , UAV lipo batteries intelligence , is a good direction and forms. Conversely , this form also makes a more profitable business model potential. Around us , the smart lithium battery is everywhere, notebook computers, mobile phones , and many mobile devices, have adopted smart lithium battery. UAV power lithium battery , it is the transition to smart lithium .

1.Solve over discharge problems spawned smart batteries

For non- disposable batteries, namely rechargeable batteries, over-discharge is the most annoying thing . Over-discharge means that the battery performance degradation. To avoid over- discharging the battery pack in the people has increased by over- discharge protection circuit , when the discharge voltage drops below a preset voltage, battery -powered stop outside . However, the actual situation is even more complicated , such as laptops , unmanned aerial vehicles , electric vehicles, because if you avoid battery discharge immediately stop power supply , then the computer will immediately shut down, too late to save a lot of data ; unmanned aerial vehicles, will direct fall from the sky ; electric vehicles will be anchored in without warning . Thus , the smart battery discharge battery protect themselves off just the last line of defense , before that , managing circuit also calculates the end of life, to provide early warning for the user , so the user has enough time to take appropriate safety measures .

Life time calculation and distance flown , the flight altitude , the current motor output power and other factors. These factors are dynamic, and the range of changes can be large , all the data needed to calculate in real time , which for the smart lithium battery management chip , algorithm design will make very high demands .

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2.Solve charge and keep problems spawned smart batteries

Nowadays, lithium batteries have been very popular. As we all know , lithium battery charging , there are special requirements . The second is currently a large number of lithium batteries using a multi- core string and form , since the batteries of individual differences , resulting in the charge and discharge can not be 100% balanced , and therefore a perfect charge management circuit is particularly necessary. And this is the smart lithium battery to have the second function – to improve the lithium battery pack charge management , and discharge management .

3.Solve batteries power detection problems spawned smart batteries

Conventional battery voltage to be detected , the need for additional connection detection means , such as a voltmeter , etc. , and this can not be detected in real time during the flight . There is no more convenient and intuitive way to let users know in real time the remaining battery charge and other information we trust? Yeah , which requires battery management circuitry to complete.

4.Solve electrode contacts electrically rot aging problems spawned smart batteries

Maybe you have the impression that when the battery is connected to the moment drone on , plug sparks , accompanied by the sound of ignition . Over time, the reliability of the connection plug is lowered , and will lead to heat the plug , even the air melted. Plug problems caused by aging drone crash cases are not uncommon. To solve this problem , smart lithium battery management circuitry and also play a role .

5.Solve batteries copyright problems spawned smart batteries

Smart lipo batteries get a good copyright protection , on the one hand provide only original lithium battery, the battery can be better guaranteed quality , consistency better, and better reliability theory .

Above five points , the battery management circuit ( smart 14.8v lipo battery management module ) close contact with the original ecological battery together into a common forms of intelligent lithium battery . Smart lithium advantages are many, these ” intelligent” to bring users the reliability , ease of use .

What Equip Was Used At First Taiwan FPV Racing Competition?

Taiwan ford environmental restoration park host the first ever FPV racing drone contest, this FPV is different from the well known aerial photography UAV. FPV drone is more focus on racing, and is operated by the first-person perspective screen through the OSD Monitor system which is more realistic than a flight simulation flight game. Gens ace here ,brand from a famous LiPo factory will bring us report after the game:

What is FPV?

FPV, full name: First Person View, but generally refers to the FPV that is a first person perspective UAV(UAV battery). And what it differ from the general speaking Aerial Photography UAV (which is more focus on stability and the ability of photographing) is that FPV is more in pursuit of flexibility, speed and flight experience.

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FPV is divided into fixed wing and multi-axis vehicle, although the former originated earlier,but the latter gradually began to develop in recent years, foreign countries also started some multi-axis FPV drone racing, although in Taiwan it is not yet universal ,But there are also a lot of amateur players in China, and these lovers gather together to hold the Taiwan’s first FPV drone racing contest.

Competition System

Since it is the first FPV drone racing in China ,so many rules and the system is still in groping, but generally it’s referred to other countries FPV competition regulations. The Competition adopting Circuit, a total of three times bypass, four participants ,they must bypass two main green bars obstacles, and pass through the four limit high arches,if does not get through arch,it will be required to fly again.And then elect the champion through semi and final champion.

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The reason why FPVs don’t take off together is to avoid mid-air collision, the second aspect is to avoid radio frequency interference, as some times the FPVs do not response(like just lie on the ground,can’t move), and also remote control device around the site will interfere , for example, frequency interference from remote control cars, remote control vessels.

The game take place at an altitude of about 150M, Mucha – Taiwan Hang environmental restoration Crawford Park, the venue is quite open for the FPV racers to fly with few limit.

Unique gameplay

Before playing FPV, first you need to know that FPV drone players crontrol the FPVs by a first-person perspective of the Monitor (or glasses), instead of looking at the body to control it. Why play like this? It’s because the body of PFV is quite flexible, when carrying around a cone or turning flight, it is difficult to distinguish the state of the fuselage and flight attitude, and therefore it must be a first-person perspective to control the body.

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Such feeling is somewhat similar to play first-person perspective flying games, therefore, FPV players in the game are all looking at the screen , a group of people take with a chair each one, and with a display screen set on the grass, the players will watch the screen to concentrate on operating the remote control, it is probably a major feature of the FPV game.

FPV kit

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Currently FPV players mostly used their own DIY FPVs, in order to fly stable, fast and flexible, specific accessories include: FPV drones, remote control, Monitor, or glasses, FPV battery ,etc. But the cost is not as much high as imagine, single frame need about five thousand, and the cost of remote control and Monitor Level depends, about 20,000 you can play the game,but it’s not enough for these DIY Makers , camping chairs, sunshade ,and the like are also needed.

Notes of aircraft battery check

The problem of go aboard with batteries

1. How many batteries can bring with?

Combined with China’s major airlines airport security requirements:

If battery energy is less than 100wh , you can carry two or more batteries without reporting; when 100wh <energy <160wh , you can take only two batteries, and need to delare to the airlines when check-in at the counter , to obtain a license voucher .

If Energy surpass 160wh ,you can’t take it to aircraft; such as: DJI S1000 + which using gens ace & tattu battery , even with the smallest adaptable capacity , 10000mAh battery ,it’s energy is 222wh, far higher than the upper limit of 160wh , can not take it to aircraft. So we recommend it’s better to mail to the destination at least five days in advance .

1000mah电池

Please also notice:

The Lithium battery are using metal active material, high temperature spontaneous combustion or a short circuit spontaneous combustion and other accidents may occur during the flight. Therefore, lithium batteries must let go of power befor boarding. And make sure the battery was insulated in advance , Seal the battery positive and negative interface with an insulating rubber.

Remote control can not be checked, what to do?

When checking , the security staff pointed out aircraft remote control contains a lithium battery thus can not be checked, there are two ways:

1>Remove the battery out of the remote control;

2>Please call the big boss who is in charge of the checkpoint, try and explain that the battery of the remote control is a built-in battery and can not be removed,and you can ask him to carry out safety checks to the remote control.

How to count the excess baggage charges?

When the baggage weight exceeds the shipping weight stipulated by the airline (China flights, free shipping weight 20kg per person), you need to pay excess baggage charges.

Excess baggage fee calculation formula:

Excess baggage charge = [total shipping weight (kg) – the number of trips * 20 (kg)] *Adult full price ticket * 1.5%

How to solve the problem that batteries and other equipment can not travel with the team ?

1.Delivery in advance

If the battery energy surpass the transportation standard of the airlines, you can express to the destination in advance.

Be noticed that land transportation for UAV battery is slow(such as Beijing to Dali ,Yunnan the transportation time takes about 5 days), please send in advance and you’d better select a large and reliable courier company.

2.Courier company refuse to accept the battery.

After return from aerial location, it’s better to leave half a day to deal with the battery mail issue.

For small cities, Courier company companies may not do the battery business. In this case, you can try to complaints about the courier companies (note: Complaint to the head office, rather than the local branch), try to tell the staff there that the battery was mailed in accordance with the policy of courier company, Let they mail back the battery in accordance with company policy.

When the complaint reached the local branch from the head office,they will pay more attention to this issue. Even if the express outlets can not receive the battery, the customer service staff will recommend you go to a local heavy goods warehouse to mail battery.

3. The Sender’s information is very important

Before mailing, make sure the sender’s address and contact telephone number are correct ,because once there’s problem occur during transportating,and can not pass through security, the battery will be returned to sender.

Mail back the battery from the aerial location is in the same situation. You need to find a local person to act as a Sender , once there’s problem occurs,the battery will return to the sender, no one will lost their 7.4v lipo battery.

 

4.Borrow or rent battery

You can also contact your local aerial shooting team, if they happen to have the same type aircraft battery, you can borrow or rent from them.

When travel with UAVs , we should have a sense of security , start from details, abide by relevant regulations of the local airport and airlines consciously .

What’s the difference between NI-MH batteries and lipo batteries

Ni-mh batteries A nickel–metal hydride battery, abbreviated NiMH or Ni–MH, is a type of rechargeable battery. The chemical reaction at the positive electrode is similar to that of the nickel–cadmium cell (NiCd), with both using nickel oxyhydroxide (NiOOH). However, the negative electrodes use a hydrogen-absorbing alloy instead of cadmium. A NiMH battery can have two to three times the capacity of an equivalent size NiCd, and its energy density can approach that of a lithium-ion battery.

5000mah lipo 2s Lipo batteries A lithium polymer battery, or more correctly lithium-ion polymer battery (abbreviated variously as LiPo, LIP, Li-poly and others), is a rechargeable battery of lithium-ion technology in a pouch format. Unlike cylindrical and prismatic cells, LiPos come in a soft package or pouch, which makes them lighter but also less rigid.

The designation “lithium polymer” has caused confusion among battery users because it can be interpreted in two ways. Originally, “lithium polymer” represented a developing technology using a polymer electrolyte instead of the more common liquid electrolyte. The result is a “plastic” cell, which theoretically could be thin, flexible, and manufactured in different shapes, without risk of electrolyte leakage. The technology has not been fully developed and commercialized and research is ongoing.

The second meaning appeared after some manufacturers applied the “polymer” designation to lithium-ion cells contained in a non-rigid pouch format. This is currently the most popular use, in which “polymer” refers more to a “polymer casing” (that is, the soft, external container) rather than a “polymer electrolyte”. While the design is usually flat, and lightweight, it is not truly a polymer cell, since the electrolyte is still in liquid form, although it may be “plasticized” or “gelled” through a polymer additive.These cells are sometimes designated as “LiPo”; however, from a technological point of view, they are the same as the ones marketed simply as “Li-ion”, since the underlying?electrochemistry is the same.

(1) Weight

In each cell of the gens ace 3s lipo battery voltage , the NiMH is 1.2V, while the lithium battery 3.6V, lithium battery voltage is its 3 -fold. The same type of lithium battery weighs lighter than the nickel-metal hydride batteries . We can see that each different weight battery itself , but because of 3.6V lithium battery high voltage, when the output voltage of the same so that a single battery pack can reduce the number of third leaving after forming the battery weight and volume reduction .

(2)Memory effect

NiMH batteries have memory effect . Therefore, regular discharge management is also required. This periodic discharge management belongs to the fuzzy state to be treated , even some without the right knowledge discharge ( or a few times each discharge after discharge are due to different companies vary ) this cumbersome discharge management when using NiMH batteries can not be avoided . Relative lithium batteries because no memory effect, in a very convenient and simple to use . It is completely without regard to how much residual voltage , direct can be charged , the charging time can be reduced naturally .

(3)Self-discharge rate

NiMH batteries from 25 to 35% (January) , lithium batteries from 2 to 5% (May). Thereby obtained , the rate of self-discharge NiMH batteries much higher than lithium .

(4)Charging

Nickel-metal hydride batteries and lithium batteries can not overcharge resistance . Therefore, the nickel-metal hydride battery constant current charging PICKCUT control mode at the highest charging voltage , charging stops continue as the best way of charging . The lithium battery using constant current, constant voltage charging mode is best.

(5)Application

NiMH batteries : consumer electronic products, remote control toys , hybrid vehicles , renewable energy systems ; Lithium Battery: cell phones, laptops, power tools, electric vehicles, backup power lights , small household appliances.

The basic knowledge of Lipo battery

For example: a 3s 11.1v 25c 2200mah lipo battery

3s:three cells in series

11.1V:3.7*3=11.1V

2200mah:the capacity of the battery

25c:the discharge rate

About voltage

3.7V voltage does not mean that when the battery is fully charged, for lithium-ion battery, the general voltage after full voltage reaches 4.2V,so 4.2*3=12.6V for a 3S battery.

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Actually,the real voltage of a cell is 2.75~4.2V.the capacity signed on a battery is how much we got when the battery discharges from 4.2V to 2.75V.So all the remote control model aircraft with lithium-ion battery also must be used within the voltage range of 2.75 ~ 4.2V.Once the lithium-ion battery voltage in remote control model aircraft is lower than 3.7V,we called it over discharging(the damage for battery is fatal),It will cause puff phenomenon,chemical liquid inside will has crystalline polamer,and the crystal may penetrate the inner structural layer caused by a short circuit,will also greatly reduce the battery capacity and discharge rate, so that the battery use value greatly reduced.So good habits is the only way to increase battery life!When the lithium-ion battery voltage in remote control model aircraft is higher than 4.2V,we called it over charging.That will cause intense internal chemical reactions.It easily be exploded if you continue to charge the battery.So no matter overcharge and over-discharge of lithium batteries will have a devastating injury.Therefore, we recommend using the safety standards of regular charger to charge the battery while the charger is prohibited unauthorized alterations, which may result in very serious consequences!

About capacity and discharge rate “C”

Battery capacity to mah (mAh) as a unit, discharge rate in units of C.Regarding “C”,for example,1C means with 1C discharge rate,the battery can last work for one hour.

All in all, the smaller of the discharge rate, the longer the battery discharge time.So when you buy a battery,you cannot just check the discharge rate.A small discharge rate battery also may have large discharging than a large rate battery.Because it is also associated with the battery capacity.It means that a bigger discharge rate have a stronger life vitality.The battery in a small discharge rate will be scrapped a few times.

About charging

A.the charging current:charging current is generally located between 0.5-1c.Recommended not to exceed 1 c(it is C not A)

B.the charging voltage:charging voltage shall not exceed the limit voltage (4.20V / single cell).The maximum limit charging voltage is 4.25V for each cell. (Prohibited the use of straight recharge your battery,otherwise may cause overcharge the cells.Users undertake all the consequences due to an error using battery.)

C.temperature of charging:The battery must be charged in prescribed ambient temperature range of product specifications , otherwise the battery vulnerable to damage.

When find the battery surface temperature anomaly (refer to the battery surface temperature exceeds 50 ℃), you should immediately stop charging.

 

About discharging

A.discharging current:the discharge current must not exceed a predetermined maximum discharge current.Large current discharge capacity will lead to the sharp decline in the battery and cause overheat and swelling.

B.discharging temperature:the battery must be discharged within specifications specified operating temperature range.When the battery surface temperature exceeds 60 ℃, it should suspend use until the battery is cooled to room temperature.

C.over discharging:over discharging the battery will cause devastating damage, so the discharge can not make the best single battery voltage is lower than 3.7V(lipo 3s voltage).

 

About stock

The battery should be placed in cool storage environment, long-term storage battery (more than 3 months), it is recommended at a temperature of 10-25 ℃ and low temperature non-corrosive gas environments.In the long-term storage,every 3 months ,battery should be charged and discharged for maintaining its activity, and to ensure that the voltage across each cell within the range of 3.85V.

Advises For the New Aircraft Hobbyists

With a growing popularity of RC aircrafts, there are more and more new aircraft hobbyists coming out paying little attention to the safety awareness. There are advises listed below, hoping these advises would do any help to those new hobbyists who are lack of safety awareness. Every hobbyist should have their safety awareness(rc car batteries lipo).

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1. Try to study more knowledge about the flying and to know how it works, the more you know about the flying theories, your flying skills would improve faster and you could fly your aircraft smarter. Huge differences between the hobbyists who have played for a while lie in how much they know about the flying theories.

2. Paying attention to the aircraft no matter when it is flying or landing, stay alert, get prepared for any emergency situations. Don’t even rest easy when you are landing your aircraft, passersby may get hurt by the propellers.

 

3.Getting more flights or practices makes you a better hobbyist. You may not improve your flying skills for one flight only, but accumulated flights will enrich your flight experience and your understanding for your aircraft.

4.Never overlook the suggestions brought up by the experienced hobbyists when you’re taking a flight. Listen carefully and treat seriously, it would avoid you from some dangers or severe outcomes.

5. Fly your aircraft slower and steadier when you stop the flight for a long time. Focus on every landing and taking off.

 

6. Check every single device on your aircraft more regularly to ensure a more safety flight. If you feel any abnormal happening on your aircraft, try to land it safely and check at once in case of a flight crash. Besides, more discussions or analyses after every failure flight is necessary to avoid getting your aircraft broken.

7.Always being in a good mood when you are flying your aircraft. Never argue with other hobbyists for any little trifles. You would enjoy a good flight when being happy. You may also fly at your best when you’re in a good body condition. Get a good rest and ready to stop flying your craft when you feel exhausted, depressed or in bad mood. Knowing to control your mood and keep a good body condition will also help for a nice flight.

8. Take the 14.8v lipo battery out of the aircraft when there is no need a flight in case the craft takes off by accident.

Difference between multrotor and fixed wing

We all know that in the UAV field is divided into multi-rotor and fixed-wing , this article will compare the following three aspects:

As for the definiton

A multirotor or multicopter is a rotorcraft with more than two rotors. An advantage of multirotor aircraft is the simpler rotor mechanics required for flight control. Unlike single- and double-rotor helicopters which use complex variable pitch rotors whose pitch varies as the blade rotates for flight stability and control, multirotors often use fixed-pitch blades; control of vehicle motion is achieved by varying the relative speed of each rotor to change the thrust and torque produced by each.

A fixed-wing aircraft is an aircraft, such as an aeroplane, which is capable of flight using wings that generate lift caused by the vehicle’s forward airspeed and the shape of the wings. Fixed-wing aircraft are distinct from rotary-wing aircraft, in which the wings form a rotor mounted on a spinning shaft, and ornithopters, in which the wings flap in similar manner to a bird.

As for Dynamic principle

Multirotor and fixed-wing aircraft for the purposes of, in fact, the principle is the same to generate lift, it simply is the differential pressure and air flow up and down the wing shock effect caused by the air flow, but we know that the atmosphere increasing altitude, air density is getting smaller (after all, the existence of gravity) but we know that the atmosphere increasing altitude, the air density is getting smaller (after all, the existence of gravity) but we know that with the atmosphere elevation, the air density is getting smaller (after all, the presence of gravity) so that the larger the reactive force on the rotor, which lift more), but in the case of high altitude, the air density is low, even if the high rotor speed (due to the material strength limit, the so-called pneumatic shock impact, rotor speed is also limited), it is difficult to obtain greater thrust, the aircraft would be difficult to rise. Therefore rotorcraft flight altitude there is a certain limit. Lift fixed-wing flying up and down the main source of air pressure, fly faster compared to the greater lift, of course, he is also affected by aircraft or engine aerodynamic and structural characteristics of the speed increase can not be infinite.

As for power field

Multirotor has more electric motor drivers than the fixed-wing , so they need more capacity battery to provide power such as the

Difference between multrotor and fixed wing

We all know that in the UAV field is divided into multi-rotor and fixed-wing , this article will compare the following three aspects:

As for the definiton

A multirotor or multicopter is a rotorcraft with more than two rotors. An advantage of multirotor aircraft is the simpler rotor mechanics required for flight control. Unlike single- and double-rotor helicopters which use complex variable pitch rotors whose pitch varies as the blade rotates for flight stability and control, multirotors often use fixed-pitch blades; control of vehicle motion is achieved by varying the relative speed of each rotor to change the thrust and torque produced by each.

A fixed-wing aircraft is an aircraft, such as an aeroplane, which is capable of flight using wings that generate lift caused by the vehicle’s forward airspeed and the shape of the wings. Fixed-wing aircraft are distinct from rotary-wing aircraft, in which the wings form a rotor mounted on a spinning shaft, and ornithopters, in which the wings flap in similar manner to a bird.

As for Dynamic principle

Multirotor and fixed-wing aircraft for the purposes of, in fact, the principle is the same to generate lift, it simply is the differential pressure and air flow up and down the wing shock effect caused by the air flow, but we know that the atmosphere increasing altitude, air density is getting smaller (after all, the existence of gravity) but we know that the atmosphere increasing altitude, the air density is getting smaller (after all, the existence of gravity) but we know that with the atmosphere elevation, the air density is getting smaller (after all, the presence of gravity) so that the larger the reactive force on the rotor, which lift more), but in the case of high altitude, the air density is low, even if the high rotor speed (due to the material strength limit, the so-called pneumatic shock impact, rotor speed is also limited), it is difficult to obtain greater thrust, the aircraft would be difficult to rise. Therefore rotorcraft flight altitude there is a certain limit. Lift fixed-wing flying up and down the main source of air pressure, fly faster compared to the greater lift, of course, he is also affected by aircraft or engine aerodynamic and structural characteristics of the speed increase can not be infinite.

As for power field

Multirotor has more electric motor drivers than the fixed-wing , so they need more capacity battery to provide power such as the Gens ace 3s lipo batteries of 75C. But increased battery capacity , increase the quality of the aircraft , the aircraft is also a corresponding increase in power configuration , thus leading to the need for greater capacity of the battery can not be so infinite loop , and the lower the number , the more efficient the shaft .Resulting in many power are wasted. Therefore, multi-axis , the flight time and flight distance is limited , carrying equipment is also limited . However, electric wing as long as the rational design , can carry the same equipment, access to multi-axis more than the flight time and distance , but also to a certain height can be unpowered glider . It needs more time , a wide range of flight you can use oil moving fixed-wing and fixed-wing flight speed or some advantage. Like a large variety of military UAVs are now used to perform tasks across continents this mulrotor none(3s lipo voltage).

However everyone has their own interests ,no matter which type you choose ,just insist doing this and enjoy yourself!

batteries of 75C. But increased battery capacity , increase the quality of the aircraft , the aircraft is also a corresponding increase in power configuration , thus leading to the need for greater capacity of the battery can not be so infinite loop , and the lower the number , the more efficient the shaft .Resulting in many power are wasted. Therefore, multi-axis , the flight time and flight distance is limited , carrying equipment is also limited . However, electric wing as long as the rational design , can carry the same equipment, access to multi-axis more than the flight time and distance , but also to a certain height can be unpowered glider . It needs more time , a wide range of flight you can use oil moving fixed-wing and fixed-wing flight speed or some advantage. Like a large variety of military UAVs are now used to perform tasks across continents this mulrotor none.

However everyone has their own interests ,no matter which type you choose ,just insist doing this and enjoy yourself!

Smart Batteries for Your Quadcopters

The multirotor is more and more popular nowadays thanks for the high-technology and affordable price with an easy control system. The most common multirotor is quacopter, and a vital sparepart for your quadcopter is the battery, which support the quadcopter to work.Today we are going to share a new higher-technology batteries for your quadcopter-Smart batteries.

 

A smart battery is a rechargeable battery pack equipped with a built-in battery management system. The smart battery can internally measure voltage and current, and deduce charge level and SoH (State of Health) parameters, indicating the state of the cells, calculated and predicted information to its SMBus Host under software control.

The new hexacopter M600 released by DJI is equipped with 6 smart batteries to support the big heavy device to work for more professional and high-end aerial photography and vedio making. And more earlily, the DJI M100 quacopter has adopted smart batteries. Why smart battery is more and more widely used now? What are the benefits of these quadcopter smart batteries compared to the ordinary batteries?

The quadcopter smart batteries have the following advantages:

1.Provides the user with accurate state of charge information along with an accurate prediction of the remaining operating time;

2.Auto-balance inside when the voltage is different between the cells;

3.Provides state-of-charge and full charge capacity;

4.Reflects capacity estimations; records battery history; including cycle count, usage pattern, maintenance requirements, max error, etc;

5.Auto discharge in high temperature, under static or storage stateand;

6.Auto alarm fuction;

7.Configures charger to the correct algorithm;

8.Reminds user of periodic service;

9.Protects battery from unauthorized use;

10.Prevent accidental system cut-off;

This is why smart battery is more and more popular and widely used. And whether you need to choose smart batteries or not depends on yourself. If you want your quacopter to make professional and quality photos and vedios, it’s advisable for you to choose them. But if you just treat them as entertainment, then you can choose ordinaly battery.

But there is no doubt that the smart battery is the new trend and era of battery area, not only for the quadcopter, or UAV, but also for other electronic area. more about battery:http://www.genstattu.com/tattu-uav-battery.html