Urgent!! Ask for information on aircraft corrosion and protection. 50

Study on water and anti-corrosion resistance of preservative coatings for aircraft structures:

Common types of aircraft corrosion and anti-corrosion measures:

It's been reported now, right? Is it a disaster area? I asked so late Don't come If you fancy our school, you might as well choose an obedient blend If you're unlucky, you may enter materials chemistry Hehe I guess you were attracted by the things in parentheses

Our school English is called Civil Aviation English, and Law is called Aviation Law, which is very foolish, I don't know your local branch situation, and the undergraduate major is on the first floor, and it is better to say that it is better If you are not afraid of tiredness (referring to work), if you want to have a good assignment, you can choose the flight major, and air traffic control is also good, if it is not a civil aviation child, it may be more difficult to mix

It's not good, but the four strong majors in our school: flying, air traffic control, communication, and industrial management.

Material chemistry is not very good flying, air traffic control, communication is good, engineering management is not good.

Ordinary major, but if you come in, you can study hard. Get good grades and strive to change departments in the first year.

The F-22, the fighter, is the knot sum of the N types of aircraft.

1. The power, speed, and altitude of the aircraft are all different, so sometimes there is sound, sometimes there is no sound.

2 You can even recognize the fighter in the sky Fly so high. Where are you on the floor, I'm going to observe it too.

1. Why can some planes fly over and hear the sound, while others can't?

A: There are several possible causes.

The distance between the position of the aircraft and the observer is too far, and the sound is severely attenuated during transmission, so the sound cannot be heard;

The transmission path of the sound of the aircraft to the observer happens to be upwind, and when the wind speed reaches a certain value, the sound cannot be heard;

The aircraft flies at a high altitude, the air density is very low, and the transmission efficiency of sound is very low, so that the observer cannot hear the sound.

2. How far away can the plane be from us before its voice can be heard?

A: It's hard to say, but it has to do with many factors, such as: the distance of the aircraft from the observer, the flight status of the aircraft, the air temperature at that time, the air density, the wind direction, the wind speed, 、......Wait a minute.

4. Generally see the strong 5, flying leopard, su-27, J-8, what is the speed and altitude of their general flying around?

A: It's even harder to say.

It had something to do with the situation at the time. Mainly: the requirements of the training course, the flight state of the aircraft, ......Wait a minute.

That's all it can say:

For the strong 5, its height may be 0-16500 meters, and its speed may be Mach;

For the flying leopard, its altitude may be 0-15500 meters, and its speed may be Mach;

For the Su-27, its altitude may be 0-18000 meters, its speed may be Mach;

For the J-8, its height may be 0-20000 meters, and its speed may be Mach;

The storage tank is a special facility for storage, which is widely used in petroleum, petrochemical and other industries. Due to the large amount of storage, and the characteristics of flammable, explosive and environmental pollution, once an accident occurs in a large storage tank, it will cause serious economic losses and environmental pollution, and may cause major fires and accidents. And the biggest threat to the ** storage tank comes from the corrosion of the storage tank.

With the intensification of global competition for resources, the processing of many refining and chemical enterprises in China has gradually developed in an unfavorable direction such as inferiority, high sulfur content, and heavy quality, and the resulting problem of storage tank corrosion has been further manifested. Serious pollution incidents caused by the corrosion and leakage of first-class storage tanks occur from time to time at home and abroad, which brings serious consequences to the safety production of petrochemical enterprises.

This paper reviews the current situation, principle, law, current materials, failure cases and other aspects of the corrosion of the first storage tank, and introduces the protection methods, schemes and protection principles commonly used in the industry in view of the current situation. The above contents are commented on separately.

I thought it was the relationship between corrosion and the Protective Knight.

Big brother,It's not the right way to ask for ** in the game section.。。