Questions about mobile phones and model airplanes and model cars.

v Remote-controlled aircraft are generally controlled by remote-controlled equipment including: radio transmitter (transmitting radio signals), radio receiver (receiving signals).

Fixed-wing aircraft control the horizontal tail, vertical tail, and ailerons and flaps (which are not available in ordinary aircraft) through the transmitter to control the flight attitude of the aircraft.

It is generally believed that it cannot fly, and the model made in a certain proportion with the actual size of a certain aircraft is called an airplane model.

Generally speaking, the model that can fly in the air is called a model airplane, which is called an aeronautical model.

Second, the composition of the model aircraft.

Model airplanes are generally the same as manned aircraft, mainly composed of five parts: wings, tail, fuselage, landing gear and engine.

1. The wing ——— is a device that generates lift when the model aircraft is flying, and can keep the lateral stability of the model aircraft when flying.

2. The tail ——— includes two parts: horizontal tail and vertical tail. The horizontal tail keeps the pitch stable when the model aircraft is flying, and the vertical tail keeps the direction of the model aircraft stable when flying. The elevator on the horizontal tail controls the lifting and lowering of the model aircraft, and the rudder on the vertical tail controls the flight direction of the model aircraft.

3. The fuselage ——— the main part that connects the various parts of the model into a whole is called the fuselage. At the same time, the fuselage can be loaded with the necessary control parts, equipment and fuel.

4. The landing gear ——— a device for model aircraft to take off, land and park. There is a landing gear in the front, and three landing gears on both sides of the rear are called the front three-point type; There are three landing gears on both sides of the front, and one landing gear at the back is called the rear three-point type.

5. Engine ——— It is a device for model aircraft to generate flight power. The commonly used actuators of model airplanes are: elastic bundles, piston engines, jet engines, and electric motors.

3. Common terms of aeronautical model technology.

1. Wingspan - the straight-line distance between the left and right wingtips of the wing (tail). (The part that passes through the fuselage is also counted).

2. The full length of the fuselage - the straight-line distance from the front end to the end of the model aircraft.

3. Center of gravity - the point of action of the resultant force of gravity of each part of the model aircraft is called the center of gravity.

4. Tail arm - the distance from the center of gravity to the quarter-chord length of the leading edge of the horizontal tail.

5. Airfoil - the cross-sectional shape of the wing or tail.

6. Leading edge - the front end of the airfoil.

7. Trailing edge - the rearmost end of the airfoil.

8. Wing chord - the line between the front and rear edges.

9. Aspect ratio - the ratio of wingspan to average chord length. A large aspect ratio indicates that the wing is narrow and long.

Analysis of the elements and principles of practicing flying.

At the beginning, I would like to emphasize the elements and principles of basic flight practice, which are directly related to whether you can successfully master flying skills.

1. Different definitions.

A drone is an unmanned aerial vehicle that is operated by a radio-controlled device or its own programmed control device. An aeronautical model is a kind of aircraft that is heavier than air, has size restrictions, with or without a power plant, and cannot carry people, which is called an aeronautical model.

Second, the flight mode is different.

The only difference is whether there is a navigation flight control system and whether autonomous flight can be achieved. In layman's terms, drones can fly autonomously, while model airplanes cannot, and must be controlled by humans through remote controls. That is to say, the drone itself flies with a "brain", and the "brain" may be limited by artificial intelligence, and there is no brain.

But the "brain" of the model aircraft is always on the ground, in the hands of the operator.

Third, the use is different.

UAVs are more inclined to military use or civilian special use, while aeromodels are closer to toys. Kunming Jinying UAV specializes in the design, production, sales, and aerial survey and aerial photography services of aerial survey UAV equipment, with low cost, strong technology, short construction period and high precision, and is China's top technology aerial survey and aerial photography UAV design, manufacturing and aerial flight service provider.

Fourth, the composition is different.

UAVs are more complex than model airplanes. The aeronautical model consists of a flight platform, a power system, and a remote control system within line-of-sight. It is mainly for the public's enjoyment, and the pursuit is the appearance of the real or elegant flight, etc., and the technology content is not high.

The UAV system consists of a flight platform, a power system, a flight control and navigation system, a link system, a mission system, and a ground station. It is mainly to complete a specific task, and the pursuit is the ability to complete the task of the system, with high scientific and technological content. Some high-end aviation models and low-end UAVs are not much different in the flight platform and power system part.

Fifth, the use is different.

UAVs mostly perform over-the-horizon missions, with a maximum mission radius of tens of thousands of kilometers. Fly autonomously through an on-board navigation flight control system. Upload control commands and downlink task information through the link system.

Model aircraft usually fly within the visual line of sight, the control radius is less than 800 meters, the operator visually sees the aircraft, and controls the aircraft through the remote control transmitter in his hand, and there is generally no mission equipment on board. Many UAS also have model-like capabilities and can be operated remotely within visual range.

Sixth, the management is different.

In China, the aeronautical model is managed by the Aviation Sports Management Center under the State Sports Commission. In China, civilian UAVs are managed by the Civil Aviation Administration, and military UAVs are managed by the military.

Summary: A drone with a flight control system dismantled, but capable of remote flight within visual range, is actually an aeronautical model. An aeronautical model that is equipped with a flight control system and is capable of autonomous flight beyond visual line of sight is a drone.

Aviation poor hunger model, as the name suggests, is a kind of model aircraft made according to the shape of the aircraft, belonging to the aerospace model, is a kind of non-manned aircraft for movement.

Model airplanes have gone beyond the narrow scope of aerospace scientists' research, and have become a means of learning and movement for aerospacers and flight enthusiasts.