. Be aware of getting started with beginners.
First, make a self-evaluation based on your personal hobbies, hands-on ability, and financial resources, and decide the direction of buying a model aircraft, such as fixed wings, straight aircraft, and multi-axis. It is simple to get started with fixed wings, straight aircraft, and more difficult to get started with straight aircraft. Due to the advancement of flight control and GPS stabilization technology, personal technical requirements are also low under high investment. Model aircraft are different from toy aircraft and are highly dangerous. Please treat
carefully. How high can an aircraft fly? The height of the model aircraft of should be determined based on its basic type, the material and power used. Generally, there is no problem with 0-1000 meters, and it is roughly considered a fixed-wing multi-axle helicopter. DJI drone height limit is 500 meters. is based on the 12 coordinate points of the obstacle restriction surface and tolerance buffer area of civil airports announced by the Civil Aviation Administration, and expands the coordinates of the airport protection range defined by the Civil Aviation Administration by 100 meters outward to form a new no-fly zone. The aircraft cannot take off in the no-fly zone; when approaching the boundary of the no-fly zone from the outside, it will automatically slow down and hover.
extends outward from the midpoints of both ends of the runway for 20 kilometers, and extends for 10 kilometers on both sides of the runway, forming a rectangular area of approximately 20 kilometers wide and 40 kilometers long as the height limit area (the part that does not intersect with the no-fly zone). In the height limit zone, the aircraft's limited flight altitude is 120 meters. ,
. How far can a plane fly? The flight distance of an aircraft is mainly determined by two factors. The distance between its own energy and maneuverable is generally 0-20,000 meters, but in most cases, people will fly within 500 meters, because only the attitude of the aircraft can be seen clearly within this distance.
. How much does an airplane cost? Answer: How much does an aircraft cost mainly depends on the electronic power equipment made of fuselage material used. A set of sets that do not include a receiver that can be used to fly. For common foam machines (1-1.4 meters wingspan), the price is generally 300-800 yuan; helicopters (450 level), the price is 1000-3000 yuan; multi-axis (four-axis 450 wheelbase), the price is generally 600-5000 yuan.
. Power type of model aircraft? common power combination is generally a motor-driven propeller, an internal combustion engine fueled by methanol or gasoline or other mixtures, or a motor drives duct fan to form high-speed air flow propulsion, or combustion and boosting in the engine to form high-speed hot air flow propulsion, and niches also use rubber band power, or no-power gliding.
6. What is the emulator? simulator is a software program. The software will simulate the operation of the model aircraft and the site environment in reality, and the control of the aircraft operation, so that you can master basic flight operations, such as the throttle response size, rudder surface response, aircraft posture response, etc. Commonly used simulators include PhoenixRC (commonly known as Phoenix), RealFlight G4. (commonly known as G4), Reflex XTR, and FlyingModelSimulation. This is the simulator that is sold online in daily online, generally bringing a CD and a dongle (the simulator software has confidentiality measures and needs to be decrypted using a dongle, similar to the shape of a USB flash drive).
7. What are the remote control and the receiver? model aircraft goes to the sky and needs a device to be able to control it. This device is the remote control. The corresponding aircraft needs a device to receive instructions from the remote control. This device is the receiver . The remote control and the receiver are connected and communicated through radio waves. The commonly used radio frequencies are 72Mhz and 2.4Ghz. The remote control can set some flight parameters, such as: the front and back of the throttle, the sensitivity of the rocker, the neutral position adjustment of the servo , the function definition of the channel, the aircraft time record and reminder, the function setting of the lever, the advanced functions include the battery voltage and current data of the model aircraft return, etc.
8. Remote Control Channel Definition and Requirements? remote control will have several channels to control, commonly known as several channels. For example, the common Tiandi Fly 6 is six channels.
A model aircraft, some of which need to be controlled manually through a remote control.For example, power size control, commonly known as throttle, elevator, rudder, aileron, flap, landing gear, smoke puller, light, etc. Each project requires a separate channel for control, but some project control needs to be very precise and stepless operation, such as throttle, lift, direction, aileron, and some project controls are fixed in several gears, such as flaps, landing gear, and light. For the above remote controls, there are rockers and levers, such as throttles, lifts, directions, and ailerons, and levers, and levers for flaps, landing gear, and lights.
9. The difference and definition of Japanese hand and American hand? Because the regions where model aircraft activities were carried out earlier were in Japan and North America, the functional definitions of the two rockers and four channels in the controller are different in these two regions. For example, the Japanese hand, the left rocker is: the upper and lower elevator, and the left and right are the rudder; the right rocker is: the upper and lower throttle rudder, and the left and right are the aileron rudder. American hand, left rocker: up and down is the throttle rudder, left and right rudder
Right rocker: up and down is the elevator, left and right are the aileron rudder. This is mainly based on personal preference, like driving, with a left rudder, mainly mainland China and North America, right rudder, mainly Commonwealth countries and some regions, such as the United Kingdom and Hong Kong, China. From a theoretical safety perspective, the left rudder is better in the northern hemisphere, but the main thing is the problem of habit development. The advantages and disadvantages of American hands and Japanese hands are usually different in operation speed in some super difficult operations. Usually, people use Japanese hands more in fixed wings and American hands more in helicopters.
0. Selection and brand of remote control? remote control is an imported and domestic brand. The domestic products include Tiandifei, Huakol , Fuss, and Futaba (Japan), JR (Japan), ROBBE (Germany), and Graupner (Germany). In the early days, the domestic electronics level was poor, and the quality of control was average. Now the domestic control quality is quite stable and the cost-effectiveness is very high. The remote control mainly pursues practical and stable, and it is not advisable to pursue high-end configurations too much. The domestically produced Chinese interface is simple to operate, affordable, and the supporting receiver is also cheap. A set of remote control and receiver can not exceed 1,000 yuan. Choose Futaba T8FG 14SG, JR 9X XG7XG11, and the price starts at more than 1,500 yuan, and the receiver is expensive. Newbie can start with the model aircraft sixth, and then upgrade according to the needs of the aircraft they are playing. Usually, most of them only need six channels to control the aircraft, namely the throttle, aileron, lifting, and direction.
1. Model aircraft type?
The types of aircraft that model aircraft enthusiasts often play are divided into three categories: fixed wing, helicopter, multi-axis, and other categories such as stunts, 3D, aerial photography, and FPV. The professional ones include the International Air League FAI SPORTINGCODE. It has a code classification for aviation sports competitions, which is specifically divided into 17 CLASS levels. Each CLASS level has its own DISCIPLINES classification. Remote-controlled aerobatics flights are listed in the [F] level [3A] category, which is the so-called F3A. F3A is just a name, or it is the name of a subcommittee under the FAI. It regulates a set of relevant regulations for remote-controlled model aerobatics, such as the size of the model fuselage, engine volume limit, weight limit, etc. Every two years, this committee will appoint a country to host a world competition, which is what the Chinese people call the World Cup. In addition, FAI also has a detailed definition of each stunt action, and clearly uses text description and graphic description to explain the phenomena and scoring standards of each stunt action
2. What are the advantages and disadvantages of electric and oil-powered aircraft? Due to the insufficient energy density of the battery itself, the efficiency of brushed motor is low, resulting in the early days of model aircraft model aircraft being mainly methanol or gasoline engines. With the advancement of the technology of lithium-ion brushless motor electric regulation , the motor is no less than the oil engine in terms of power and energy density. At the same time, the oil engine has high requirements for the start-up of the ground adjuster, and the ground maintenance work is more, and it is relatively dirty and messy. The structure of motor is simple, clean and maintenance-free.Since electric model aircraft uses electric motors, it is necessary to purchase corresponding chargers and batteries as aircraft power. Currently, new model aircraft are basically recommended to enter electric.
3. What does 50CC 120CC mean? This statement means that the engine's cylinder volume is 50 ml or 120 ml, which is usually analogous to the power size of the engine or the size of the aircraft. Since the aircraft has strict weight requirements, the aircraft basically has the size of the engine. Generally, the fixed wing span of 50CC is 2.4 meters
4. Methanol and gasoline engine? both belong to the category of internal combustion engines, but methanol machines are similar to diesel engines , with two strokes , which consumes a lot of fuel and has a lot of noise, and gasoline engines have four strokes, which saves fuel and saves less tension.
5. Model aircraft engine (internal combustion engine) brand
leaf (domestic), OS, Beijing Business KELLY, Komatsu, YS.
6. Brushed motor? brushed motor consists of two parts: stator and rotor . There is magnetic pole (winding type or permanent magnet type) on the stator. The rotor has windings. After power on, a magnetic field (magnetic pole) is also formed on the rotor. There is an angle between the stator and the magnetic pole of the rotor. Under the mutual attraction of the magnetic field of the stator (between the N pole and the S pole), the motor rotates. By changing the position of brush , you can change the direction of the magnetic pole angle of the stator (assuming that the magnetic pole of the stator is the angle starting from the magnetic pole of the stator, the magnetic pole of the rotor is the other side, and the direction of the magnetic pole of the rotor pointing to the magnetic pole of the stator is the rotation direction of the motor), thereby changing the rotation direction of the motor. This brush refers to a brush, also known as carbon brush . Disadvantages are power-consuming, wear and tear of carbon brushes, bulky and short life.
7. Brushless motor : Brushless motor also has a rotor and a stator. The rotor of the brushless motor is permanent magnet steel, which is connected to the output shaft together with the shell. The stator is a winding coil. The commutation brush used by the brushed motor to alternately change the electromagnetic field is removed. Therefore, it is called a brushless motor. It relies on changing the alternating frequency and waveform of the current wave input to the stator coil of the brushless motor. A magnetic field rotating around the geometric axis of the motor is formed around the winding coil. This magnetic field drives the permanent magnet steel on the rotor to rotate, and the motor rotates. The performance of the motor is related to factors such as the number of magnets, magnetic flux strength, and the motor input voltage. It is also closely related to the control performance of the brushless motor, because the input is DC power, and the current needs an electronic speed regulator to turn it into 3-phase AC power. It also needs to receive control signals from the remote control receiver to control the motor speed to meet the needs of the model. In general, the structure of a brushless motor is relatively simple. What really determines its performance is a brushless electronic speed regulator, commonly known as electric regulator. Advantages: Long life, power saving, easy to maintain in the later stage, no need to replace the carbon brush.
9. Brand of electrostatic control?
Haoying, Huapai, Phoenix, Zhongtewei, recommended Haoying.
0.XXA of electrostatic regulation?XXA often refers to the electric regulation that can stably adjust the output current, such as 60A. That is, it can stably output 60A ampere current. Do not use it beyond the standard, as it will cause the electric regulator to burn.
1..The brand of the motor?
commonly used are: Langyu, New Zealand, Yatu , Scorpion, Homat, Flower Brand, Yinyan; generally, Langyu is more used for fixed wings, New Zealand (cheap), followed by Helicopters, Yatu and Scorpion (too expensive) are second,
2. Motor model? motor model, each manufacturer has its own numbering rules, mainly KV value and motor code.For Langyu motors, the model of conventional brushless motors 2212 2217 220822 refers to the motor diameter 12 17 08 refers to the length and volume of the motor body 2216 2212 2216 The power is stronger than 2212. For specific values, please refer to Langyu official data
3.KV value? refers to how much the motor speed increases when the voltage is added to one volt. KV2000 refers to when the voltage is 10 volts, and the motor idling speed is 20,000 rpm per minute. The significance of this parameter is: it can help you judge the characteristics of motor . A high KV motor is violent, with a small internal resistance, large current, high power, fast speed, or high power bursting at the same voltage. It has a very high speed speed, but due to the design and material limitations of the motor itself, there will be an upper power limit. Generally speaking, a high KV with a small high speed paddle, and a low KV with a large low speed paddle, which is a bit similar to driving. When the car feels that the most powerful, the speed is often relatively low.
4. Why are the prices and control differences between model aircraft helicopters and toy remote-controlled aircraft so big? Level 100 of model aircraft helicopter, Level 250, Level 450, Level 500, What does level 800 mean? Remote-controlled toy aircraft refers to the number of channels that control the aircraft forward, backward, up and down direction. It cannot be combined with multiple commands for precise control, and can only control the aircraft to fly up and down, left and right; while the model-aircraft remote control helicopter, the channel refers to the number of channels that directly control the command. Each channel directly controls the corresponding servo, and through operation combination, the aircraft can be controlled to make complex special moves. Take the camera as an example. Toy remote control aircraft is like point-and-shoot . The camera itself has set the parameters for you, and it cannot allow you to change a better lens, adjust the aperture, sensitivity, etc. of details. You only need to press the shutter to focus simply. The model aircraft helicopter is like a SLR camera. You can freely change the combination of the lens, and you can also manually adjust the aperture, and the sensitivity can also be used to capture the effect you need. Model aircraft helicopters can complete somersault movements seen on TV through practice, while remote-controlled toy aircraft can only simply push and lift the movements forward and backward.
Regarding the level, it is generally used to define the size of the aircraft, and it is based on the distance from the helicopter main axis to the tail axis (see mainly the ATO series). Some companies also classify the main rotor size. Take the Ato 450S as an example, it is the 450 level, and the large paddle used is 325MM, while the Ato 450L is the 480 level, and the 360MM large paddle used is. The 450-level fuselage is about 65 cm long, the 600-level fuselage is about 1.10 meters long, and the 700-level aircraft fuselage is about 1.35 meters
5. The material of the aircraft? aircraft is mainly composed of a fuselage bearing structure and power electronic equipment. Commonly used materials for aircraft fuselage carriers are divided into foaming categories, plastics, copper, iron and aluminum, carbon fiber, nylon, wood, fiberglass, etc. Since the aircraft has extremely strict weight requirements, in order to reduce the weight of the fuselage, the fuselage often adopts foam material supplemented with carbon fiber rod reinforcement, or the outer skin of the light wood frame structure is covered with empty inside, and there are also direct non-real fuselage methods such as KT board and carbon rod blending. Just like the making of kites, in addition to the tough paper knot, it must also have bamboo strips of sufficient strength to support them as a skeleton to spread the paper open and form. Just like a gun, it was basically all-metal structure in the early days (more than 90%). Now the proportion of metal parts on many guns is less than 50%. At the same time, high-strength parts such as firing needles are still made of metal, but can you say that the current gun is not as good as before?
6. How to implement the operation of model aircraft? The operation of the model aircraft is basically achieved through the remote control in hand. It operates the rocker and lever on the remote control, and transmits the corresponding operating signal through the transmitter of the remote control. The receiver on the aircraft receives the corresponding signal and then converts it into a command to pass it to the corresponding servo action, so that the corresponding rudder surface moves as needed. The movement of the rudder surface affects the flow of airflow and drives the aircraft to respond accordingly.
7. Functions of the servo? servo can be understood as a precisely controlled motor, divided into simulated servo and digital servo. Its function is to perform specific rudder surface changes and change the airflow. It is a component that we actually operate when we control the aircraft. Just like when the ship needs to change the direction when we need to change the direction, we will operate rudder , so that the water flow changes and the direction of the ship will change. When choosing a servo, the torque, reaction speed, self-weight, etc. are mainly determined by the aircraft's demand for the rudder surface. Because when the aircraft tells the aircraft to fly, the rudder surface will be affected by the wind and will be subject to wind pressure, different servoes need to be selected for use. For example, a 1.2-meter surfer foam machine with a total weight of less than 1.5KG and a light wood 50E-class model aircraft with a self-weight of more than 3KG, the servo will definitely not be the same. Generally speaking, 9 grams and 12 grams refer to the weight of the body, and generally simulates the servo. The power of the servo is generally measured by torque, and the unit is ounces/inch or kg/cm. Torque indicates how much rotational power can be output from the shaft within the set distance. For example, a 1.6kg/cm servo can pull 1.6kg from a distance of 25px. The further away from the shaft, the smaller the torque. For example, when you reach 50px, you can only pull 0.8kg of things. Another related measure is the speed of the servo, which indicates how fast the servo can rotate (such as 60 degrees in a tenth of a second).
8. Simulated servo and digital servo? analog servo and digital proportional servo (or standard servo) have no MCU microcontroller in the electronic circuit, and are generally called analog servo. Digital proportional servo is the best type of analog servo. The digital servo electronic circuit has an MCU microcontroller, so it is commonly known as a digital servo. The digital servo has a faster reaction speed, a small non-response range, high positioning accuracy, and strong anti-interference ability than analog servo. Generally, aircraft such as fixed-wing foam machines that require low accuracy and response, such as Surfers and Cessna 9g simulated servo, are sufficient to use, while for example, the swash plate and lock-tail servo used in helicopters require high reaction speed and accuracy, they all need to use better digital servo.
9. Why is the speed not as fast as that of a digital servo? Whether it is an analog or a digital servo, when the load torque remains unchanged, the motor speed depends on the driving signal duty cycle and is independent of the frequency. The digital servo can receive higher frequency PWM external control signals, obtain position information after a shorter period of time, and make the latest adjustments to the servo rocker position. Therefore, the response speed of the digital servo is faster than that of the analog servo, rather than the speed of the driving motor is faster than that of the analog servo.
0. Why does the servo sound squeaking after power on servo always make a squeaking back and forth positioning adjustment sound? It is because some servo has no hysteresis adjustment function, and the range of the control dead zone is adjusted to be small. As long as the input signal and feedback signal always fluctuate, their difference exceeds the control dead zone, the servo will send a signal to drive the motor. There is no hysteresis adjustment function. If the gear set of the servo gear is poor in mechanical accuracy and the teeth are imaginary, it drives the rotation step of the feedback potentiometer, and the step range will exceed the control dead zone range, and the servo will be adjusted continuously and squeaked continuously.
1. Why are the prices of servoes so different? The basic structure of the servo is like this, but there are many ways to implement it. For example, motors are divided into brushes and brushless, gears are divided into plastics and metals, output shafts are divided into sliding and rolling, shells are divided into plastics and aluminum alloys, speeds are divided into maximum and slow speeds, volumes are divided into large, medium and small, etc. Different combinations and prices vary greatly. For example, a small servo is generally called a micro rudder, which is more than twice as large as a medium size under the same material, and metal gears are more than twice as large as plastic gears. Different types need to be selected according to your needs. There are three input lines of the servo, with the power cord in the middle of the red, and the ground cord on one side. This wire provides the most basic energy guarantee for the servo, mainly the rotation consumption of the motor.There are two specifications of power supply, one is 4.8V and the other is 6.0V, which correspond to different torque standards, that is, the output torque is different, and the corresponding 6.0V is larger, depending on the application conditions; the other wire is a control signal line, Futaba is generally white, and JR is generally orange. Also, it should be noted that some models of SANWA servo lead power cords are on the side rather than in the middle, and need to be identified. But remember that red is the power supply and black is the ground wire, you can't make mistakes.
2..Why do helicopters and aircraft use a large gear disc, and why do large gear discs be made of plastic? Since the helicopter uses a high-speed motor with a high KV value, the shaft rotation speed can be reduced and the corresponding driving torque can be increased after passing through the large gear disc. The number of driving gear teeth ratio is the gear ratio. Less than 1 means increasing the shaft speed and reducing the torque. More than 1 means reducing the shaft speed and increasing the torque. For example, when a variable speed bicycle becomes a pinion, whether the force increases or decreases is a reverse application. Use plastic materials, first, protect the motor from secondary damage, and second, reduce weight.
3. Is there more metal on the helicopter, the better? helicopters are not all metal parts, so they can fly stably and withstand falls. Because the helicopter structure is relatively complex, a 450-level helicopter has hundreds of parts of various types. These parts are combined into an aircraft. The advantage of metal is its strength and ductility, but now many such as carbon fiber and nylon plastics surpass metal parts in some characteristics. Moreover, because the metal parts have good ductility, when fried chicken appears, the metal parts will absorb part of the energy, resulting in slight deformation, which makes it difficult to detect problems and hidden dangers. This is also one of the reasons why many fried helicopters are becoming more and more difficult to fly. Therefore, all-metal aircraft are not the best aircraft. Just like cars, metal will not be used in general bumpers and some places that are prone to bumps. The reason is the same.
4. The material of the main rotor paddle of the helicopter? The paddles of model aircraft helicopters generally include three types: wooden paddles, glass fiber and carbon fiber.
5. model aircraft battery selection? . When choosing a model aircraft with a motor, you need to buy a power battery according to the size of the fuselage. It is taboo to buy too large batteries. Large-capacity batteries are used on small fuselages. Because the battery is too heavy, it will affect the efficiency of the motor propulsion, and the air stagnation time will not be long.
Give a classic example: in the early stage of the development of in my country's missile, the range did not reach the target. At this time, Wang Yongzhi Academician proposed a way to reduce the amount of fuel filling to solve it. No one could understand it. Later, with the support of Qian Xuesen , Dongfeng 2 was modified. By reducing 600 kilograms of fuel, the range actually reached the standard.
6. What are the parameters of model aircraft batteries? model aircraft battery, the general parameters include voltage, discharge rate, charging rate, capacity, and internal resistance . The conventional 3S 2200mAh 25C discharge 5C charging, and 3S (S series) represents the battery connected in series with 3 batteries. The normal starting point voltage of a single battery cell is 3.7V, and the full voltage is 4.2V (US ROC high-voltage lithium battery, the full voltage can reach 4.35V). This battery is 11.1 volt voltage, and the full voltage is 12.6 volts, the capacity is 2200mAh, and the 25C discharge means that this model aircraft battery can discharge at a maximum current of 25*2200mA=55A. 5C charging means 5*2200mA=11A maximum current charging. Commonly used brands: ROC, Huapai, R&F, Format, Equator, Dapp.
7. What is the C number of battery? The number of C of the battery can be understood in this way. Taking the 3S 2200 mAh battery as an example, 1C discharge is an hour to release the battery from 4.2v to 3.7v. It is roughly discharged with 11A current for one hour, and 5C discharges with 55A current for a current, and a battery will be discharged in about ten minutes. For example, the discharge multiple of an ordinary model aircraft battery, that is, starting from 10C, and ranging from 50C, the polymer battery cell used by a special process is different from the polymer battery cell used by ordinary mobile phones and mobile power supplies and cannot be mixed.
8. Save voltage of the model aircraft battery? Due to the special process of model aircraft battery, it is usually fully charged a few hours before use. When not in use, it is discharged to 3.8 to 3.9 volts to store. Do not store the battery at too low or too high voltage to extend the service life and maintain the effective capacity. Conventional lithium batteries such as mobile phone battery mobile power supply all have protective circuit boards, which can prevent over-discharge, over-shoot, and short-circuit. However, the model aircraft power battery does not have a protective circuit board, so it is easy to over-discharge and short-circuit, causing danger or even explosion.
9.Propeller installation direction? generally moves the side on the propeller with the specifications (6*4) printed on it toward the front, so you can simply feel the downwind force. The wind generated by the propeller always blows from the head to the tail. At the same time, pay attention to whether the motor steering is normal. If the reverse direction is performed, just switch the two of the three wires on the motor.
0. Wind direction of the plane taking off? fixed-wing model aircraft take off, usually against the wind, small aircraft have poor wind resistance, and it is recommended to pause flights at level 4 or above.
1. What does empty machine mean? airplane is an airplane with only fuselage structural components and does not include electronic equipment such as electric-controlled motor servo.
2. What does the "PNP" version mean? has the entire machine, except for the battery remote control charger, no charger, and other motors and electronic servo machines. Just plug in the receiver and play.
3. What does the "RTF" version mean? means Ready To Fly, you can fly. PNP plus remote battery charger. But generally, it can fly with just one configuration. Very low-end
4. What does the remote control work frequency 72M and 2.4Ghz mean? The remote control and the receiver use radio waves for communication. The frequency of this radio is commonly used in 72M and 2.4Ghz. In the early days, it mainly used 72M Hz long waves. A long remote control antenna can be seen on the remote control. Now, technological progress has gradually adopted 2.4Ghz short waves, and there is only one small antenna on the remote control wire.
5. crystal oscillator and counter frequency? When uses a 72M Hertz remote control, due to the openness of radio waves, a channel is allocated for every 20kHz interval between 72.010MHz and 72.99MHz in the 72Mhz frequency band, a total of 50 channels are allocated. In this way, there is a frequency generator (crystal oscillator) with the same frequency on the remote control and the receiver, so that the receiver and the remote control can communicate with each other. With the advancement of technology, the 2.4Ghz remote control does not need to pair a consistent crystal separately. It only needs to directly adjust the frequency between the remote control and the receiver to directly establish a communication connection between the remote control and the receiver. Due to the requirements and price reasons, remote control toys for household use mainly use 40MHZ and 27Mhz. Remote controls with the same frequency can sometimes be operated in common with each other. This problem also exists in model aircraft. Therefore, when using a 72Mhz remote control in the early days, model friends will first understand each other's remote control frequency bands to avoid miscommunication operations. The 2.4Ghz that is commonly used now does not need it.
6. What are the brands of model aircraft helicopters? mainly includes Yatuo, Taishi, JR, Gulang, Fengshen, Huakell, Beijing Shang , Leihu, RJX, etc.
7. What fuel is the main use of oil-powered aircraft Oil engines mainly use methanol and gasoline and the corresponding ones cannot be mixed. The engine using methanol as fuel is a two-stroke, and methanol and castor oil are mixed four to one. The engine that uses gasoline as fuel is four-stroke and uses high-purity gasoline.
8. What is hover , and why do you need to practice hover? hover is a unique way of flying for helicopters and the charm of helicopter flight! As the name suggests, it means that the helicopter stays almost at a certain height in the air, so that it can complete tasks that ordinary fixed-wing aircraft cannot complete! For those who are just starting out, you must start with the practice of hovering flight, because the helicopter takes off, lands, and the beginning and end of some other flight actions all need to enter the hovering flight state first. So hovering becomes a basic exercise subject for helicopter flight!
9. Why does helicopter move to the left or elsewhere instead of taking off straight? Due to the influence of gyro effect and the main paddle downward scrubbing flow, it is normal for helicopters to tilt to the left during takeoff! It is necessary to slightly tap some aileron control lever (right-hand horizontal control lever) to the right, and it cannot be corrected by fine-tuning the aileron. After observing the left and right movements of the body after stable hovering, then adjust the fine-tuning of the aileron. If you shift in other directions, you can correct it by fine-tuning on the ground
0. What to do if the parts are damaged in the aircraft bomber Since many parts of model aircraft are very versatile, you can basically find the corresponding model on Taobao. There are also the so-called original and secondary factory parts, such as the helicopter Central Asia Rags, which have corresponding Flyover secondary factory parts.
1. Is it better to buy a set of aircraft or assemble it yourself? If a novice is not very familiar with the aircraft, it is recommended to buy a high-end suit version from a brand manufacturer. This can save a lot. Find accessories and adaptability issues for whether they are suitable for use. Once you have a certain foundation, try to buy various bulk parts installed separately.
2. Suitable people for model aircraft? Since model aircraft requires a certain amount of investment, considerable hands-on and theoretical basis, and a considerable amount of time will be invested in the future, it is not recommended to be under 15 years younger.
3. Is it necessary to use batteries on a fuel-powered aircraft? The receiver and servo on the oil-powered aircraft also require electricity, so it also requires battery power.
4.Flight time of electric aircraft ? Due to the limited battery capacity of the engine, it is a violent flight such as 3D special action. Under full throttle operation, electric aircraft generally only has 5-8 minutes of air stagnation time, or even shorter. Of course, if it is a specially designed aircraft for long air stagnation, it is an exception.
5. Beginners, choose oil-powered or electric? Answer: Now the electric technology is mature, and the electric power has some aspects such as maintenance-free and clean. It is recommended that the motor be given priority for beginners. It is especially recommended to first be electric fixed and familiar with flight, and then turn to helicopters or multi-rotors according to your hobby.
6. Flight time of the fuel-powered aircraft? The fuel-operated aircraft can carry a lot of fuel, and the flight time is generally more than that of electric aircraft, more than 10 to 30 minutes.
7.GTAT ? Because the aircraft has high-frequency vibration during flight, if some equipment, such as cameras are mounted directly, the image will be blurred. Using the helicopter mounted through the gimbal, the gimbal's own vibration compensation function can offset the impact of the aircraft's vibration on the camera or other equipment, and can operate the equipment mounted thereon. There are two-axis and three-axis, mainly in the controllable direction, such as horizontal, up and down, etc.
8. How fast can a model aircraft fly? The fastest of model aircraft should be considered as a spray. The speed of over 300 kilometers per hour is not a problem. Ordinary foam machines can reach tens to hundreds of kilometers, and helicopter high-speed routes can also reach seventy or eighty kilometers.
9. What is the tail of a helicopter goldfish? There is a lock-tail servo on the helicopter. When the helicopter is flying in the sky, the lock-tail rudder will stabilize the fuselage. If the tail shakes left and right, we generally call it the goldfish tail.
60. Helicopter sculls? After the helicopter takes off, the main rotor should rotate on one plane. If you observe and find that this phenomenon is not on the same plane, it is generally called a double-salt problem. When the double-salt is running, the large oar has two planes, up and down, that is, the two large oars do not rotate in the same plane. The double-salt will cause vibration and power loss of the body. Adjusting the length of the connecting rod corresponding to one of the large oars can change the situation of the double-salt. If the double-salt becomes more serious after adjustment, it needs to be adjusted in the opposite direction.
61. What is the practice stand? helicopter practice frame, mainly because the helicopter is not easy to master balance during takeoff and landing, the fuselage is easy to roll, causing the main rotor large oar to sweep and damage. The carbon rod can be opened in a cross or X shape on the sled of the fuselage, so as to avoid damage to the large oar caused by rolling on the fuselage during takeoff or landing.
62. Helicopters have ailerons and no ailerons. What is the difference?
Remote-controlled helicopters basically had ailerons in the early days. Intuitively speaking, there was an aileron under the main rotor, and without ailerons, there was only a pair of main rotor large oars. The aileron of a helicopter can be roughly understood as a result of counteracting the rotation of the helicopter's large paddle. It has the function of self-stabilizing the aircraft. It has a relatively complex aileron structure. The gyroscope is generally called a single-axis gyroscope, which mainly controls the tail locking servo to lock the tail. The aileron-free structure is simple. After removing the aileron structure, the gyroscope is generally called a three-axis gyroscope. In addition to controlling the tail locking servo to lock the tail, it also needs to connect the swash plate servo to achieve the cancelled electronic aileron function.
newbies recommend that there are no ailerons, simple structure, few parts, and less time to adjust the machine.
63. What is the function of ailerons with fixed wings? aileron refers to a small movable wing surface installed outside the trailing edge of the wing tip. For the main operating rudder surface of the aircraft, the rolling torque generated by the pilot's control of the differential deflection of the left and right ailerons can make the aircraft roll maneuver. Why: When manipulating the aileron, due to the differential between the left and right ailerons, that is, the aileron on one side moves upward and the aileron on the other side moves downward, the lift at both ends of the wing changes, resulting in a pressure difference. The lift at one end of the aileron is smaller than the lift at the one end of the aileron descending, which provides the power for the aircraft to roll left and right.
64. Functions of gyroscope? helicopter has a large reverse torque due to its rotor lift structure, so it needs to use a tail rotor to overcome it, so a special equipment is needed to adjust the balance of torque, which is a gyroscope. How does a gyroscope work? A gyroscope with aileron basically consists of two parts: an angular velocity sensor and a bias correction circuit. Angular velocity sensor is used to detect whether a certain axial direction has deflected. The most common one is whether the tail of the machine is deflected on the helicopter. At this time, this axis is the helicopter's main axis. That is to say, as soon as the tail handle is moved, the sensor tells the control system: I have detected the deflection, direction xx, rotation rate xx degrees/second. At this time, the bias correction circuit comes. After calculation, it sends a correction signal: send a response in the direction of xx with the force of xx. This is reflected in a helicopter generally tells the tail servo to deflect at what angle and what direction is. The gyroscope used without ailerons, also known as a three-axis gyroscope, has more complex functions. In addition to the function of locking the tail to prevent deflection, it also needs to ride the aileron function to enhance the stability of the fuselage and some properties of flight control.
Common aileron gyroscopes include GY401 gp780, aileron gyroscope without aileron K8 V8 MB, etc.
65. What is sensitivity? The sensitivity of the gyroscope is the sensitivity of the gyroscope to correct its deviation after the body is deflected. It must be corrected in time when deflecting, and avoid overcorrection.
66. What is flight control? flight control is the flight auxiliary control system. It is based on three-axis gyro, three-axis acceleration, three-axis magnetoresistance, barometer and DSP or micro CPU data processing. These sensors obtain the current attitude of the aircraft. When abnormal attitude changes occur, corrective measures will be taken automatically after the processor calculation to maintain the attitude of the aircraft stable to avoid accidents and bombers, but it needs to be turned off when doing special 3D actions. Commonly used flight controls are such as Naza produced by DJI.
67. Charger selection? beginners can get involved. In the early days, they can choose chargers like B6 or A6A9. The price of B6 is cheap, and the full set costs only more than 100 yuan, but the power is only 50W, so it is only suitable for model friends with extremely tight budgets. The full set of A9 with power supplies costs more than 600, and the power is also 300W, which is suitable for model friends with a certain budget. If you don’t have enough money, you can use the PL8 308 to provide a full set of chargers with a dual-channel output power of over 10,000 W. The above charger differences are mainly in terms of the charging time caused by charging power, the battery type that can be supported, the single and double output, the charging balance accuracy, etc.
68. Why do we need to balance the charging function? The power batteries of model aircraft are generally connected in series by several battery cells. For example, the 3S 2200 is connected in series by 3 3.7-volt 2200 mAh battery cells. Because there are differences in the individual cells themselves, such as internal resistance and capacity, not each cell marked as 2200 mAh, the actual capacity must be exactly 2200 mAh, and there will be a difference between 10-50 mAh, and the same is true for internal resistance. Such differences will cause the actual voltage of a single cell when discharged and charged in series. This will damage the life and capacity of the battery in the long run. Therefore, when charging, we generally charge in series first for individual cells, and then charge separately according to the voltage of individual cells to maintain the voltage of each single cell.
69. What is the function of the balance head? balance head is used on the battery to measure the overall and single cell voltage and perform balanced charging.
70.What is BB sound? BB sound is actually a small device that measures voltage and has a low voltage alarm with a buzzer. It can measure the overall voltage of the battery and the voltage of a single chip through the battery balance head, and can set the low voltage alarm with a buzzer.
71.Fiber tape function? model aircraft are made of foam foam material, while reducing weight, when the bomb appears, the fuselage wings and other parts are prone to damage. When using foam glue to bond, colleagues generally use fiber tape to paste and reinforce the surface, which resists tensile and inhibits slight deformation.
72. Functions of ball head clamps?
Helicopters use ball head pull rods to connect, and ball head pliers are used as tools to separate ball heads from the tie rods.
73. Pitch ruler? Since the helicopter's lift adjustment is mainly achieved by controlling the windward inclination angle of the main rotor large propeller, the difference between the pitch angle of the main rotor large propeller in the initial state and the two large propellers is very important, so it is very important to measure the pitch angle of the actual installed large propeller together. The pitch ruler is such a measuring ruler that specializes in measuring the pitch, which is divided into electronic pitch ruler and mechanical pitch ruler.
74. The difference between the material of the helicopter and the AB product? helicopter large paddles are mainly made of wood, glass brazing, and carbon fiber. Wooden paddles are cheaper and can be used for hovering, but due to poor strength and toughness, it is not recommended to use them if you fly stunt 3D. AB products are different in quality. AB products may have some differences in appearance or accuracy, which basically does not affect normal use. Picks are available for daily exercises.
75. What is a paddle? propeller will withstand a large centrifugation when operating at high speed during flight. Therefore, if the propeller itself is damaged or collided, the propeller will also be ejected, which is very dangerous. Because the fixed-wing propeller is formed in one piece and is directly fixed to the motor, the structure is generally less. Helicopters are more common. Because the large propeller is large in size and is prone to bumps. At the same time, the helicopter has a large vibration. The large propeller is fixed on the rotor head by a multi-stage screw connection, so it is more likely to have a propeller launch problem. Therefore, before taking off, it is necessary to check whether the screw fixation at the connection of the large propeller and whether there are damage and cracks in the large propeller itself.
76. What does the crane mean?
crane is one of the special 3D actions, and it is also a fancy flight action. It is to operate a fixed-wing aircraft so that the aircraft head is upward and the fuselage is basically vertical, creating a similar aircraft as if it is hung up. There are also similar 3D actions such as cobra, top hat, side tumbling, etc.
77. Choice of flying field? The requirements for playing model aircraft airports are that due to the certain dangers, it is necessary to choose a sparsely populated and empty place with flat surfaces, open and no electric poles around, houses and other buildings. Common places such as large lawns and beach tidal flats, with an area of no less than the size of a football field.
78. Classification of electric ducts? electric ducts are usually classified according to the diameter of the fan blade, roughly: 55, 64, 70, 90, 105, 120, 144mm and other specifications. The materials are made of plastic and metal, that is, the air guide tube and the fan blade are both metal. One type of air guide tube is metal, and the fan blade is nylon and fiberglass. Another material is carbon fiber.
79. Uses of aircraft? model aircraft mainly serves leisure and entertainment, but can also be used for aerial photography, cable mounts, bird repelling, performances, etc.
80. What is the load capacity of a remote control helicopter? The load load of the model helicopter is basically different according to the size of the aircraft. For example, taking the ATO 700 as an example, the load load exceeds 2KG, so there is no problem with hanging a gimbal and a SLR camera.
81. Choice of power cables used in airplane battery electrostatic motors, etc.? Because the electric model aircraft has a large power, the battery electrostatic motor needs to bear a large current in a short time, so it is necessary to use copper core silicone wires with good quality to avoid excessive impedance and causing heat and burning. Please refer to the AWG US standards. The 40A electric regulator has already used wire No. 16 for the battery type, and the 60A electric regulator and the batteries used simultaneously are wire No. 14. The diameter of the copper core of the wire No. 16 is 1.29 square mm, and the diameter of the No. 14 is 1.63 square mm. When using wires, the margin is appropriately reserved, because the voltage is low and the current is large. If the impedance on the power wire is too large, it will lead to obvious problems such as heating and voltage drop of the wire. When welding, the joints should be in good contact to avoid poor welding, heat from the large impedance of the solder joint, and frequent insertion and removal, causing fallout.
82. What material is the KT board? Can it be used for airplanes? KT board is a plate core produced by foaming PS particles, which is easy to cut and process, and is cheap. It is usually used in the advertising and home furnishing industry. Some model aircraft enthusiasts also use this material to make board machines. A cutting knife can be used, or a heating wire can be used for thermal cutting. Use carbon rods as the skeleton to strengthen the structure.
83. Why don’t you set a power switch on a model aircraft? Model aircraft has a relatively large discharge current, while ordinary switches have idle technology and materials and have relatively large contact impedance. When there is a large current, it is very easy to cause the switch to heat and burn. A switch that can bear high current is of great price and weight, so there is basically no switch installed, and the wiring terminals are directly pulled out.
84. What is EXP? EXP is the exponential curve. Our actions of the servo can change the correspondence between the rocker and the servo reaction.Just like it was originally a straight line, it could be adjusted to a curve to rise, such as the change of fast when the small throttle, the change of slow when the large throttle, etc.
can adjust the corresponding relationship between the control and the servo response according to personal habits through the setting of the EXP curve.
85. Should I take off or go against the wind? When the model aircraft takes off, the head of the plane is facing the direction of the wind, which is to take off against the wind. This way, the lift is the greatest, and it is not easy to cause the plane to overturn sideways.
86. Why do you need to turn on the control first and then turn on the plane? When the aircraft is powered on first, the aircraft is equivalent to a state where there is no controller to control it. Electronic equipment such as the aircraft's propeller servo may start on its own, and the flight field is dangerous, so you must turn on the control first so that the aircraft will always have a remote control signal to control it when powered on. Otherwise, still.
87. Can helicopters be played at home? remote control helicopter is prohibited from playing near crowds at home. Because the helicopter is complex in structure and difficult to operate, the body is also very dynamic, so as long as it comes into contact with people, it will cause great damage. Therefore, the helicopter must be played in an open space outdoors. Novice recommends that the distance is at least five meters.
88. Can model aircraft be picked up by hand? model aircraft has propellers and is fast at the same time, so it is not recommended to use hands to pick them up. The propellers in front of the nose and the kinetic energy brought by the faster speed are enough to cause harm to the human body.
89. What should I do if the model aircraft battery bulge is bulging? model aircraft battery is bulging, which means that it has been damaged and is not recommended. Please throw it into a special battery recycling trash can like other batteries.
90. What is the difference between PCM and PPM? mainly refers to the method of encoding the remote control. PPM is equivalent to analog transmission, which directly transmits the radio waveform to the receiver and transmits it to the servo for execution. PCM first processes the signal, forms a digital model and encodes it and then transmits it. The receiver needs to receive a decoding and restore process, which is transmitted to the servo for execution. Similar to previous analog signal transmission TVs and current digital signal TVs.
91. What is the picture rumor mentioned in aerial photography? What is the difference between 5.8G 1.2G? image transmission is image transmission, which is basically composed of an on-board camera, a transmitter, a ground reception and a screen. The main frequencies are 5.8GHZ and 1.2GHZ, and some use WIFI frequencies. Use 5.8GHZ for short distances and 1.2GHZ for long distances. DJI’s flying camera adopts WIFI method, and you can communicate with the unmanned aerial camera in the air by using your mobile phone to realize the operation of the camera. Among them, the power of the transmitter is 200 1000 milliwatts, etc. It is mainly determined based on the distance required for wireless transmission. The larger the power, the better the signal. The commonly used wireless routers at home generally have only a few milliwatts of antennas. 92. What are the commonly used shooting equipment for multi-axis fixed wing aerial photography? for aerial photography. Commonly used equipment include micro-single, Gopro, Mountain Dog SUPTIG, 808, Hawkeye, and even dash recorder. The prices and performance are different. If you pursue static image quality, you can choose micro-single. If you shoot at high speed, you can use professional G0PRO cameras. If you need to be small in size, you can choose 808. The picture quality requirements are not high, and you can choose dash recorder for modification. In order to pursue picture quality, there are also people who use the cloud platform to hang a SLR camera to shoot according to their needs.
Black Dog Silver Dog White Dog corresponds to three color versions of G0PRO generation three.
93. Use and storage of new batteries? After buying the model aircraft battery, you need to pay attention to check whether there is any appearance damage. If there is a timely return and exchange process, and measure the battery voltage after obtaining the battery. Generally, the single-chip battery cell ranges from 3.5-4.0V. You can use the charger's charging and discharging function to try charging for one round and then discharge it to 3.7 to 3.9 for a single-chip storage. When you are about to fly, you will be fully charged.
model aircraft battery has different characteristics from the polymer battery we use in daily life and is not suitable for long-term full-charge storage.Since the model aircraft battery does not have a protective plate, it is highly dangerous. It is recommended that the model aircraft battery be stored in a special battery box (iron) to avoid accidents.
94. Newbie's entry-level aircraft choose a fixed wing type? beginner aircraft, it is recommended to purchase a waist-push version of the Surfer aircraft. The 1.2-meter wingspan, the propeller installation of fixed-wing model aircraft is mainly organic head forward push, upper waist legs in the middle of the fuselage, and rear tail backward. Because novices are not proficient in handling model aircraft, it is difficult for aircraft to control the way and attitude of landing. Using a landing without a landing aircraft and waist push can reduce the technical requirements for takeoff and landing, and avoid aircraft bombing or bombings from being seriously damaged.
95. Is seaplanes more suitable for beginners? Seaplanes are more difficult than those on the road. The aircraft fuselage includes electronic equipment and needs to be waterproofed, otherwise it is very easy to enter water. When the aircraft lands on water, due to the frictional resistance of the water surface and the frictional resistance of the ground is very different. The downward angle causes the different depth of the float to enter the water.
96. The horizontal axis spindle tail axis of the helicopter? The central axis connecting the rotor head and the fuselage in the middle of the helicopter is called the spindle. The rotor head is connected to the horizontal axis is the horizontal axis, and the tail rotor and the tail wave box are the tail axis.
97. What is the first step to get the remote control? Get the remote control. Please read the remote control instructions and remember to carefully compare the remote control to be familiar with the functions of each knob lever on the control, and how to adjust the operating interface of the control system, such as: how to set the off switch, the corresponding lever and rocker of each channel, the positive and negative terms of the channel, etc. This will open up the basics for you in the next step. Only when you ask questions can you get the answer accurately, otherwise you will not be able to accurately describe the problem, or if you cannot answer the inquiries, it will be difficult to solve the problem.
98. How to fly the plane so as not to bomb the plane? can only be done without taking off. What we need to do is reduce the bomb. The aircraft we take daily are priced at hundreds of millions of dollars. The pilots have hundreds or thousands of hours of training. Professional ground crew members on the ground check the aircraft and guide them, but they still cannot avoid air crashes. So how can our model aircraft reduce bombs? We must start from three aspects: 1. Hardware, choose suitable accessories of good quality, and assemble and use them correctly; 2. Software: Practice flying techniques on simulators, such as; 3. Attitude: Have a rigorous certified flight attitude, carefully check whether all components of the aircraft are working properly, and initially formulate flight plans, and do not fly unprepared and adventure flights. Doing the above three points will reduce the chance of bombers in flight.
99. How to reduce the harm of bombers? Since the bomber occurs instantly, it is basically difficult to make more actions at this time. The most important reaction is to close the accelerator immediately, which can avoid damage to the motor itself and other Shanghai.
00. How can you turn from a newcomer into a master? Every expert comes from a newcomer step by step, but not every newcomer can become a master. To grow, newcomers must first learn to explore more by themselves. Secondly, there must be veterans guided and guided the entry, so that they can get started. It is difficult to make progress by simply working behind closed doors and relying on veterans to help install and adjust the machine.
