Shulou(Shulou.com)11/24 Report--

CTOnews.com, October 22 (Xinhua)-- Russia launched the Lunar-25 (Luna-25) probe on August 11 this year. This is Russia's third space exploration spacecraft in the post-Soviet era, and this mission and the previous two have failed.

According to previous reports from CTOnews.com, the Russian Lunar-25 probe was scheduled to attempt to land on the moon on August 21, but deviated from its designed orbit and collided with the moon on August 19 because of an emergency that "could not maneuver in accordance with the specified parameters."

The Russian lunar exploration mission continues the lunar exploration activities of the former Soviet Union. The mission ended in 1976, when Luna-24 successfully returned about 170g of lunar soil to Earth. Now, Russia has announced the latest timetable for the lunar launch mission:

The lunar 26 orbiter was launched in 2027.

The lunar lander 27 was launched no earlier than 2028.

According to the Russian National Space Group, the most likely cause of the Moon-25 crash was that a large number of instructions were sent at the same time, resulting in the failure of the accelerometer of one of the angular velocity measurement units to open, resulting in the abnormal operation of the airborne integrated control system.

To put it simply, these command data should have different priority settings, so that the equipment should give priority to a certain task, and the allocation of different priority instructions has a certain degree of randomness. the failure of the lunar-25 accelerometer to send a signal caused the airborne control system not to shut down the propulsion system in time when the probe reached the predetermined speed, but only after the thruster was running at a specified time.

As reflected in the actual process, when the lunar-25 probe propulsion system changed from a near-lunar circular orbit to a landing elliptical orbit, the engine ignited for 127 seconds instead of the planned 84 seconds, eventually causing it to enter an unscheduled orbit and collide with the moon.

According to the results of the investigation, the Russian National Space Group will make recommendations to avoid the recurrence of such incidents in future missions.

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