Luna-25 was lost because the engine didn’t receive a command to shut down, Roscosmos chief says
FILE PHOTO: Roscosmos employees pack the Luna-25 moon lander for transportation to the Vostochny cosmodrome. © Sputnik / Roscosmos
Russia’s Luna-25 automatic interplanetary station collided with the Moon last month due to the failure of speed-measuring devices on the probe, Yury Borisov, the head of Russia’s space agency Roscosmos, has said.
During the probe’s landing procedure, “the correction engine didn’t stop working based on the data from the accelerometer,” which resulted in the crash, Borisov explained during a press conference on Friday.
The accelerometers that measure the changes in the speed of the vehicle “didn’t switch on,” he added.
The agency head said experts are now looking for reasons why those devices didn’t perform as intended. There are 16 possible scenarios for that to happen, and eleven of them have already been examined, he said.
Borisov also revealed that the first person who offered him words of support after the crash was NASA head Bill Nelson.