All set for India’s moon lander to touch down on lunar soil

CHENNAI: India’s moon lander is all set to make a landing on the lunar soil on August 23, 2023, as the final deboosting operation got over in the wee hours of Sunday. The moon lander, or the lander, is part of the Indian Space Research Organisation’s (ISRO) Chandrayaan-3 spacecraft. The spacecraft comprises a propulsion module (weighing 2,148 kg), a lander (1,723.89 kg), and a rover (26 kg).

"The second and final deboosting operation has successfully reduced the LM orbit to 25 km x 134 km. The module would undergo internal checks and await the sun-rise at the designated landing site. The powered descent is expected to commence on August 23, 2023, around 1745 hrs. IST," ISRO tweeted. The 25km x 134 km was achieved at 1.50 a.m. on Sunday.

The main purpose of India’s third moon mission, which costs about Rs 600 crore, is to land the lander softly on the moon. The Chandrayaan-2 mission failed as the lander called 'Vikram' crashed on the moon.

According to the ISRO, the lander is expected to make a soft landing near the South Pole of the moon on August 23 at 5.47 p.m.

The lander will descend to the moon from a height of about 100 km from the moon's surface.

The soft landing is a tricky issue as it involves a series of complex manoeuvres consisting of rough and fine braking.

Imaging of the landing site region prior to landing will be done to find safe and hazard-free zones.

Subsequent to the soft landing, the six-wheeled rover will roll out and carry out experiments on the lunar surface for a period of one lunar day, which is equal to 14 earth days.

Meanwhile, the propulsion module will go around the moon for some more time with its payload, Spectro-polarimetry of Habitable Planetary Earth (SHAPE), doing its job.

The Chandrayaan-3 was put into orbit on July 14 in copybook style by India's heavy lift rocket LVM3.

The spacecraft completed its orbit around the earth and headed towards the moon on August 1.

On that day, after a successful perigee-firing performed at ISTRAC, the ISRO injected the spacecraft into the translunar orbit. (IANS)

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