How does a toy RC helicopter take off?

Hello, equivalent to this question, what I give you is: force and reaction force, when the motor has the lift force generated by turning to one side, it will also produce the reaction force on the other side, so the plane you do has been spinning, the two forces are inconsistent, and the way to eliminate it is to use two motors to produce the same.

The force is fine, and generally the planes sold outside are factory-based, so it is impossible for each motor to be the same speed. So there is fine-tuning, one motor speed is unchanged, and the speed of the other motor is adjusted by fine-tuning, so that the force of the two motors is balanced, so that the plane takes off, and if the motor fine-tuning is big or small, then the plane will rotate to the left or right, and I don't know how to ask again.

Under normal circumstances, *** take-off is not vertical. Because there is a ground effect, a ground effect. The downward wind of the wings, returning to the aircraft on the ground, will affect the vertical take-off of the aircraft.

Any *** will have this, it's just that the size of the situation is different. This is not the main problem, just take off the plane in an empty mine. The most important thing is that after taking off, whether the plane can hover or not, and if it can hover, there will be no problems.

But the real one is very difficult to achieve, unless you are a very high-end ***, basically you can't hover well. Either the speed of the sculls is different, causing the aircraft to spin, or there is a translation in a certain direction. I used to have a straight plane, which appeared in the air and panned backwards, and there was no way to fine-tune it, and finally I dismantled the horizontal tail of the tail, but it was better.

The super big "toy" remote-controlled plane newly bought by foreign cattle people online took off like this.

In the previous articles, I introduced to you cars, large trucks, amphibious boats, drilling rigs, motorcycles, and assembly drawings of various shapes. After class today, I accidentally looked through the drawings of LEGO 10759. The *** shape inside is more attractive, and it is easy to operate.

So today, I will introduce this LEGO drawing. Part numbers will be announced in a later article.

Before the introduction, a digression. Some parents asked me if their children would need to be exposed to other aspects of knowledge after learning Lego. This question is actually very simple, if your child is more curious and energetic, you can let him get more exposure to interest training.

On the contrary, it is also possible for children to learn a skill well. There is no urgency to learn this, we must guide and form a habit!

First prepare special parts "*** frame" and "white seat", these building blocks can be bought on the Internet and are not expensive. Install the exhaust bucket (formerly known as the grille, I often give the block a nickname for memory) on the left and right sides of the seat, and install the instrument panel on the front of the chair (this is also a special part).

Attach the white clamp plate to the top of the aircraft and install 2 arch bricks. The general appearance of the fuselage came out.

The second step is to dock the side bolt plate with the propeller, then install it to the tail of the fuselage, and then fix it with a curved building block. Install transverse racks on the sides of the aircraft, and continue to install 2 air ducts underneath. On the other side of the fuselage, it is also installed in this way.

In order to familiarize everyone, I also passed on the drawings.

This step is the easiest, directly on the landing gear of the aircraft, installing the red warning lights, and hinge plates. These details are exactly the same as real helicopters.

In the fourth step, on the base plate of the square, except for the red hinge plate, which is used for docking with the fuselage, the other parts are decorated. You can replace the existing parts in your hand.

In the last step, pay attention to the order of installation, mainly to build the top propeller of the helicopter. First use the perforated plate to dock with the propeller bracket, and then dock with two 1*6 foundation plates, and install the cross plate on it. At the top is a smooth plate for decoration, which can be skipped.

Finally, install the windshield on the ***, and the whole work is OK. The cost I calculated was no more than $50.

The model and quantity of parts used today:

Group 1: 6223120*1 piece.

407901*1 piece.

4540386*6 pcs.

4556152*1 piece.

4648256*2 pcs.

Group 2: 6125569*1 piece.

4289255*1 piece.

6047220*1 piece.

4211450*2 pieces.

Group 3: 6137496*1 piece.

4211814*1 piece.

Group 4: 4243812*1 piece.

4515338*1 piece.

Group 5: 247926*1 piece.

4527839*1 piece.

366626*2 pieces.

4571078*2 pieces.

6097283*1 piece.

First, the difference between *** and ordinary aircraft and the simple principle of flight:

Admittedly, *** and airplanes have something in common. For example, they are all flying in the atmosphere, they are heavier than air, and they are all aerodynamic aircraft, but they have many unique characteristics.

1) The flight principle and structure are different from the airplane, and the aircraft relies on its fixed wings to generate lift, while the flight structure relies on the rotation of the propellers (propellers) on its head to generate lift.

2) The structure of the aircraft is different, mainly composed of rotors, fuselage, engines, landing gear and control mechanisms. According to the number of propellers, it is divided into single-rotor type, double-rotor type and multi-rotor type.

3) The tail of the single-rotor type is also equipped with a tail wing, and its main function: torsional resistance, to balance the reaction torque generated by the single rotor and control the turning.

4) The most conspicuous place is the narrow and long knife rotor on the head, which is generally composed of 2 5 blades, driven by 1 2 engines, and its main role is to exert a huge downward force on the atmosphere through high-speed rotation, and then use the reaction force of the atmosphere (equivalent to the upward force of the atmosphere by the helicopter) to make the aircraft able to hang smoothly in the air.

2. Balance analysis (for single-rotor type):

1) The rotation of the large propeller of the helicopter creates lift to balance gravity.

The blades of a helicopter are about 2-3 meters long, and they are generally composed of 5 blades. Ordinary airplanes rely on wings to generate lift to take off, while helicopters rely on propellers to rotate and pluck the air to generate lift. When a helicopter takes off, the propellers turn faster and faster, and the lift generated is also increasing, and when the lift is greater than the weight of the aircraft, the aircraft takes off.

When the pilot adjusts the altitude during flight, it is only necessary to change the speed at which the large propeller rotates.

2) lateral stabilization of the helicopter.

Because if the helicopter only has a large propeller, then the fuselage will also rotate according to the balance of momentum, so the helicopter must have a device that can prevent the fuselage from rotating. The small propeller on the side of the tail of the aircraft plays this role, and the aircraft makes a left turn, right turn or maintain a stable course by it. At the same time, in order not to make the tail rotor touch the rotor, the fuselage of the helicopter must be lengthened, so the helicopter has a long tail like a dragonfly.

3. Analysis of energy mode.

According to the law of conservation of energy, energy neither disappears nor comes into being, it can only be transformed from one form to another. In low-velocity flowing air, the only energy involved in the conversion is pressure energy and kinetic energy.

A certain mass of air has a certain pressure that can push an object to do work; The greater the pressure, the greater the pressure energy; The flowing air has kinetic energy, and the greater the flow velocity, the greater the kinetic energy.

The velocity of the air only comes from the action of the propeller carried by the engine on the air, and of course the energy is also balanced from here.

When opening the toy, try to control *** at a height. Keep holding down 9 and keep holding w to control *** at a height. This has always been the fastest way to increase the speed of ***, turn your head and use Q and E, if someone hits you with a gun, you can use A and D, and you can use the propeller to quickly solve them.

First of all, go to the vicinity of the blasting site, find a car called topfun, the yellow dot in the minimap, and run straight to it.

After getting into the car, the game prompts the player to control the *** model and place the explosives on the gasoline barrels on the 1st to 4th floors of the building, with a time limit of 7 minutes, starting from the player picks up the first explosive. The game will show you how to operate the helicopter Hunger Oak Machine.

First of all, don't rush to pick up the bomb, first control the helicopter to go to the building and kill the workers guarding the building. After attracting the attention of the worker, hover above the worker's head, and then press the S button next to the rotten sun to fall, and at the same time, slightly press the number button 9 to dive forward, and you can use the propeller of the aircraft to solve the opponent.

After cleaning up the guards, go back, pick up the explosives, and then control the helicopter to the designated location, press the number key 0 to release. From the second floor, you can fly directly to the fourth floor, and you can press the W up button all the time. After the last bomb is planted, the building automatically ** and the mission is complete.

The mission at point A is over.