Chang’e-5’s gamma ray altimeter

Chang’e-5’s gamma ray altimeter

During Chang’e-5’ landing, a gamma ray altimeter was used to control the descent. Wang Xiaobo (leader of the gamma ray altimeter project, China Aerospace Science and Industry Corporation – CASIC) explained: “When the distance was less than five meters, the altimeter sent a turning-off instruction and switched off the orbital control engine and the self-control engine.”
Credit: China Central Television (CCTV)/China National Space Administration (CNSA)

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