Model airplane design questions, model airplane design ideas

Model Airplane Aerodynamics (by Martin Simmons) You deserve it.

This book basically talks about everything from shallow to deep, and it is definitely enough to play model airplanes.

Then tell me about my own experience. At the beginning of the design of model airplanes, it is recommended to imitate some of the more classic models, which are more mature in terms of aerodynamics and structure, and are usually used for mass production, so the process is not too complicated. After accumulating some experience, according to the pneumatic knowledge learned from reading books, you can try to adjust some basic parameters according to your needs, make them and then go to test flights, and then make adjustments according to the feeling of test flights, so that the learning effect of combining theory and practice is much better than that of pure reading.

As for the airfoil, according to different aircraft types, there are several more commonly used airfoils on the model aircraft, and these materials are easy to find, just use the ready-made ones. If you want to improve the selection of your own airfoil, you can use the profili software, which is an airfoil library software, and can also do some basic aerodynamic analysis of the airfoil, such as polar curves, pressure distribution curves, etc. However, it is generally not used.

That's basically it, and if you have any questions, you can ask them. If you have any questions in the future, please feel free to ask me for help.

Common airfoils that are simple to make can include "flat airfoils", airfoils similar to NACA-66, and CLARK-Y airfoils.

The full weight can be determined first, and then the wing load can be determined, and the wingspan can be obtained after roughly estimating a aspect ratio.

After the wing is calculated, an elevation stability coefficient is estimated, and after the length of a tail arm is selected, the horizontal tail area is estimated, and then the flat tail shape is calculated.

Then there's the vertical tail.

After a rough estimate, it's time to start drawing and refining the details.

The power aspect starts with the choice of propeller, the diameter is calculated, and then a preliminary estimate of a pitch is made.

Then select the engine and correct the pitch value. Determine propeller parameters.

Finally, there is the choice of other equipment such as servos.

It's very simple, you can calculate it in a few steps, draw a drawing, and the design of an airplane will come out.

The easiest way is to go to the DIY forum to see the drawings, and then print them out, and make a few of them yourself to familiarize yourself with, so that you have a number of sizes, and no one is born with them.

That can still be sold for money! Very good! Start with regular paper. And then slowly go long. You will create it yourself.

Read more creative books on model airplanes. There is also 3D software to be familiar with, more than to do model design is a good aid.

Very esoteric! Great knowledge! The precision requirements are very high, and the oil is moving! It's still electric! It is recommended that you buy accessories to assemble it! Or it will end in failure!

Summary. Hello dear to your inquiry, adhere to the concept of people-oriented. (2) Professional skills can independently deal with teaching materials more flexibly, have their own teaching ideas, pay attention to cultivating students' good learning ability, return the learning initiative to students, and provide students with creative private law, economic law, professional ethics and other subjects, and the knowledge points are trivial and easy to confuse.

Here are my thoughts for your reference. Many candidates feel that the textbooks are difficult to understand and the test questions are difficult to understand. It is recommended that candidates study the textbook well to grasp the basic concepts, principles, and basic concepts and values.

Hello dear to your inquiry, adhere to the concept of people-oriented. (2) Professional skills can independently deal with teaching materials more flexibly, have their own teaching ideas, pay attention to cultivating students to develop good learning ability, and return the initiative to students. Liang Shouwang The following is my complex thought for your reference.

Many candidates feel that the textbooks are difficult to understand and the test questions are difficult to understand. It is recommended that candidates study the textbook well to grasp the basic concepts, principles, and basic concepts and values.

What is a model airplane: (1) The model airplane includes three models: air, sea and vehicle: the model of the aircraft (referred to as the model air) refers to:

Aircraft that cannot carry people, conform to certain technical requirements, and are heavier than air. The technical requirements are that the maximum flight weight shall not exceed 5 kg, the maximum lift area shall not be more than 150 square inches, the maximum wing load shall not exceed 100 grams per square meter, and the working volume of the engine cylinder shall not be more than 10cc. (2) The aeronautical model can generally be divided into four large:

Categories: 1. Free flight; 2. Line manipulation; 3. Radio remote control; 4. Elephant model class. Second, the name of the part of the empty mold, the function and the common terms of cracking:

The empty mold is generally composed of five parts:

I'd like to answer from a student's point of view.

Good kiss. From a student's point of view, it is the courage to explore, keep innovating, and develop the future of wide raids and dismantling human beings have always had the dream of flying, from kites to bamboo dragonflies, from hot air balloons to the Wright brothers, from Airbus A380 to spacecraft. Perhaps this dream is the seed planted from the small model airplane in the hands of children, waiting for the dream to come true one day.

The most basic, the most primitive Zen eggplant, that is the most important booster for future take-off. This chapter will introduce you to the most basic and common concepts in model airplanes.

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.