How to use model airplane engines, how many types of model airplane engines are there in general

It's hard, so I suggest you go to the forum and check it out.

Model aircraft engines generally include piston engines, pulsating jet engines, solid rocket engines and carbon dioxide engines.

Piston engines, mostly two-stroke, single-cylinder internal combustion engines. Aircraft model piston engines are very light in weight and have a high power per unit cylinder volume. Racing Electric** ignition engines weighing 150 to 200 grams and producing more than 1 horsepower.

The pulsating jet engine has a simple structure and is divided into three sections: air intake, combustion chamber and tail nozzle. There is a reed valve between the intake tract and the combustion chamber, and the gasoline is atomized into a mixture with air after being injected into the inlet duct, and is discharged by the tail nozzle after burning in the combustion chamber through the reed valve, generating thrust. Thus, the combustion is carried out in a pulsating manner, which creates a thrust of several tens of Oxtons.

This type of engine is only used to operate circumferentially flying model airplanes in a line.

Solid rocket engine, a popular commercial engine in the 50s, has been eliminated due to poor safety and high fuel.

The carbon dioxide engine is not a heat engine, but a piston engine that pushes the piston by volume expansion when solid carbon dioxide is vaporized.

1. Free flight (P1).

P1A - towing model glider (divided into P1A-1, P1A-2 stages) P1B - elastic model glider (divided into P1B-1, P1B-2 stages) P1C - piston engine model glider (divided into P1C-1, P1C-2 two stages) P1D - indoor model aircraft (divided into P1D-1, P1D-2 two stages), P1E - electric model aircraft.

P1F – Elastic model helicopter.

P1S – Hand-thrown model glider (divided into empty time and straight-line distance) P1T – Catapult model glider.

2. Line manipulation (P2).

P2B - Line Control Aerobatic Model Aircraft (divided into P2B-1 and P2B-2 levels) P2C - Line Control Group Racing Model Aircraft.

P2D - Line Operated Air Combat Model Airplane.

P2E - Line Operated Electric Aerobatic Model Aircraft (divided into P2E-1 and P2E-2 levels) P2X - Line Operated Rubber Model Aircraft.

3. Radio remote control (P3).

P3A - Radio-controlled aerobatic model aircraft (P3A-1, P3A-2) P3B - Radio-controlled model glider (P3B-1, P3B-2) P3E - Radio-controlled electric model aircraft.

2. Extensive aeronautical model projects among young people.

1. Paper model airplanes.

Second, the hand-thrown model glider (abbreviation: hand-thrown, numbered P1S) third, the elastic model helicopter.

Fourth, catapult model glider (abbreviation: catapult, numbered P1T) fifth, towing model glider (abbreviation: traction, popular class number P1A-1 and P1A-2, international class number F1A).

6. Elastic model aircraft (abbreviation: elastic band, the universal class is numbered P1B-1 and P1B-2, and the international class is F1B).

Channel engine, 70mm channel.

Stainless steel, if you have money, use nichrome alloy to make it, and I should pay attention to safety when I spray the engine myself.

The materials required for the self-made turbojet engine are: stainless steel, fusion welding machine, copper pipe, brazing machine, titanium alloy, aluminum and CNC lathe file.

However, it is advisable to buy it outright. Because, it is not enough to have drawings for making scrolljet light, but also to have relevant knowledge of CNC machine tools and metals. There is also the basis for formula calculations.

Anyway, it is impossible to process it by yourself, and the processing cost is very large. In addition, it is better to ask someone to do it than to buy one.

Clause. 1. There is no guarantee that the *** made by others is bad, and whether there are corners.

Clause. Second, the quality of the materials used in the production.

Clause. 3. Whether the precision of the parts is accurate.

The basic purchase is factory production, with special gas collection and strict testing process.

If it is a ducted propeller, it is to use a power input to drive the fan to rotate and generate thrust. This power may be an electric motor, it may be an internal combustion engine.

However, there are also some model airplanes that are jets. Their engines are the same as those of jet fighters. You understand the engine of the fighter and it's okay.

In the case of jets, turning is not the main thing. The main purpose of the rotating parts in them is to compress the intake. If there is another way to compress the intake air, they can just drop the rotating parts. Such as ramjet engines.

In the case of a jet with a turbine, the power that makes the turbine spin is the gas that is ejected backwards after combustion. It's like the wind blowing windmills. The jet blows the turbine, which in turn drives the compressor to compress the intake air in front.

Of course, when this engine starts, it does need something to turn it up before it can be ignited. Just like when the tractor starts, you have to use the crank to shake the flywheel up before it can start...

In the case of a jet engine, the starter may be an electric motor or a small internal combustion engine. There are various designs.

It's all so detailed, I'll pass by.