Russia says its moon landing failed due to malfunction in control unit | World News - Hindustan Times
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Russia says its moon landing failed due to malfunction in control unit

Reuters |
Oct 03, 2023 03:47 PM IST

Russia's Luna-25 spun out of control on August 19 and crashed into the moon.

Russia on Tuesday blamed a malfunction in an on-board control unit for causing its first lunar mission in 47 years to crash into the moon in August.

A Soyuz-2.1b rocket booster with a Fregat upper stage and the lunar landing spacecraft Luna-25 blast off from a launchpad in Russia's Amur region on August 11.(via REUTERS)
A Soyuz-2.1b rocket booster with a Fregat upper stage and the lunar landing spacecraft Luna-25 blast off from a launchpad in Russia's Amur region on August 11.(via REUTERS)

The state space corporation, Roscosmos, said the control unit failed to turn off the propulsion system, which blasted for one and a half times longer than necessary as the craft hurtled towards the moon.

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Luna-25 spun out of control on August 19 and crashed into the moon, dashing Moscow's hopes that it would beat India to the unexplored south pole of the moon. An Indian spacecraft landed there on Aug. 23.

The failure underscored the decline of Russia's space power since the glory days of Cold War competition when Moscow was the first to launch a satellite to orbit the Earth - Sputnik 1, in 1957 - and Soviet cosmonaut Yuri Gagarin became the first man to travel into space in 1961.

Roscosmos said it had come up with a preliminary analysis of the reason Luna-25 crashed.

"When issuing a corrective pulse to transfer the spacecraft from a circular lunar orbit to an elliptical pre-landing orbit, the Luna-25 propulsion system worked for 127 seconds instead of the planned 84 seconds," Roscosmos said.

It said the most likely cause was that an on-board control system malfunctioned in the BIUS-L angular velocity measuring unit because of incorrect data commands. As a result, the propulsion system was not shut down when needed.

The Kremlin has played down the failure of the mission, saying Russia will continue to pursue ambitious plans in space.

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