Why is the MU5735 data of the crashed plane abnormal? Can the black box give an answer?

The plane may encounter heavy water vapor in the clouds, and there are many ice crystals or hail, which causes the nose to freeze seriously. The engine may also fail because of low temperature icing, and the plane has no power. The nose of the plane was so heavy that it fell head first. When the plane crashed, there was smoke on one side of the engine, which proved that the engine was out of order.

According to the change chart of aircraft altitude given by FR24 (an application that provides users with real-time flight information on a global scale), it can be clearly seen that the aircraft appeared signs of climbing from 2263 meters to 262 1 meter during the descent, but after climbing more than 300 meters, the aircraft began to descend rapidly and eventually crashed.

Usually, the causes of aircraft accidents are as follows: aircraft mechanical failure, improper pilot operation, or pilot error, foreign objects inhaled by the engine, such as birds, such as 91KLOC-0/USA, and natural causes, such as the weather at that time.

Four hours before the plane crash, according to the weather forecast of the local meteorological department in Wuzhou, Guangxi, they issued a strong convective weather warning four hours before the plane crash, so there is also the possibility that the crashed plane will encounter strong convective weather.

I remember watching movies before, when the plane was struck by lightning in the clouds or when the plane froze, it was very dangerous and it was easy to cause engine failure. In addition, the nose at the front of the plane may freeze more. Too much and too thick ice will make the nose of the plane too heavy, so it crashed.

Judging from the monitoring screen at the time of the plane crash, the time it took for the plane to fall into the forest from the air, that is, a few seconds, is not an exaggeration to describe the speed of the plane falling to the ground at that time, so the final flight data of the plane is extremely abnormal, and the pilot may not be able to change the flight state of the plane by manual operation at that time. Otherwise, the plane should not be head down, but fly forward with an inclination.

This state of the plane is like suddenly putting down a vertical pencil, and no force can change its trajectory. If the plane has no power because the engine is dead or the fuel is exhausted, it can glide to a certain extent and can glide far. Although it will eventually fall to the ground, it will be rich. If you slide forward for a while, there should be many survivors.

But the most terrible thing may not be the power problem, but the plane is out of control. The pilot has taken remedial measures, but the plane only temporarily restores its lift function and will soon be unable to maintain normal flight.

It took only a few minutes for the plane to go from normal to losing contact. Its normal cruising altitude is 8869 meters, but within one minute, it quickly dropped to 2263 meters, rising for about 20 seconds and rising for more than 300 meters, out of control. The falling speed reaches 157 m per second, and the initial velocity of ordinary sq bullets is 300 m/s to 500 m/s.

In such an emergency, the pilots can't handle it, which is why they didn't hang the danger code 7500 from beginning to end, because the situation was too sudden to report, so they had to deal with the plane first.

At present, a second black box for recording flight data has been found under the soil layer 1.5 meters east of the impact point. This black box was placed at the tail of the aircraft. The parts at the tail of a plane of more than 40 meters are under the soil layer of 1.5 meters, so you can imagine how deep the plane head is buried.

The black box at the tail of the plane can be this deep. The plane is more than 40 meters long, so you don't need to look at the data of the plane head. When you look at it with naked eyes, the plane falls vertically. In the process of falling, the plane is head-down and rotates 360 degrees around its own axis. This data is absolutely abnormal.

However, before finding the second black box, experts also said that the black box may always be very serious and may lose the function of sending out pulse signals, but fortunately, the black box was found today.

Black box is fireproof, waterproof, high temperature resistant, corrosion resistant and electromagnetic interference resistant. It can withstand the high temperature of 1 165438 and the impact of 500 kilometers per hour. Even in high salinity seawater, it can remain intact for 30 days. So the data in these two black boxes should remain relatively complete, but it may take a long time to crack them. Some experts said that it may take months or years to investigate the cause of the plane accident, so be prepared psychologically.