Why did Malaysia Airlines crash in the Indian Ocean, and why did Malaysia Airlines plane crash in th

The cause is still under investigation, and the research process is as follows:

Malaysian officials have announced the basic research and judgment process from relevant British agencies to determine that MH370 fell into the southern Indian Ocean. Experts from the British Aviation Accident Investigation Agency (AAIB) and the International Maritime Satellite Organisation (Inmarsat) and the Malaysian side will explain the relevant content to the families in detail.

Authorities determined that the plane was heading for the southern Indian Ocean by detecting pulse frequency shifts in the "hand shake" signal between the aircraft and the satellite, and between the satellite and the ground receiving station. This new method uses the "Doppler contribution", a theory derived from the Austrian physicist Doppler. In a nutshell, the phenomenon of a change in frequency is felt by the observer due to the relative motion between the source of the wave emitting the sound or electronic signal and the observer (receiver).

This change is called an "offset" and can also be measured in the unit of "Hz" by the instrument.

In the MH370 case, the relative position between the communication satellite and the earth is fixed, and the relative position of the MH370 aircraft will change relative to the satellite when it moves north or south over the Strait of Malacca. When the aircraft transmits the "handshake signal" at different positions, and when it is transmitted to the ground receiving station by satellite, a small difference between the signal pulse intensity and the preset strength will occur, and the speed and course of the aircraft can be judged by comparing the simulated scenes.

Inmarsat has announced that after MH370 turned off the Aviation Response System (ACARS) and the turnaround, they received at least six times that the aircraft had "shaken hands" with the satellite via the satellite data link, basically at one-hour intervals. A vice president of the agency said that this was because the airlines did not purchase information services that continuously track the trajectory of aircraft. According to Malaysia, the agency and the AAIB also conducted simulation scenario experiments based on data from six Boeing 777 aircraft, and finally determined that the burst frequency offset received by the satellite receiving station was different when the MH370 flew in different directions.

Relevant materials show that it is through the satellite signal ground receiving station in Australia that the heading and speed of the aircraft are offset by pulse frequency. The graphs released by the Malaysian side show that the curves derived from this analysis show that the data on the frequency shift of the signal pulse is highly consistent with the data on the flight to the southern Indian Ocean in the simulated scenario. If the plane is flying to the northern route, the offset calculated at the last signal "handshake" is about 50 Hz lower.

Malaysian officials believe that the last time the plane tried to "shake hands" with the satellite was at 0:11 UTC (8:11 Beijing time), and no relevant signals were received after 0:15. With no land to land, the Malaysian side believes that the plane has crashed into the southern Indian Ocean.

The basic research of the ocean, the basic research of the ocean.

inmarsat) experts and Malay inmarsat) experts and Malays.

The captain is supposed to be a terrorist.

There are hijackers, or there is something wrong with the captain. The wreckage has not been found yet, and what Malaysia Airlines says is not credible.