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Chandrayaan-3 Spacecraft Achieves ‘Close to-Round Orbit’ Round Moon After Performing One other Manoeuvre

by Staff Reporter
August 14, 2023
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India’s bold third Moon mission’s spacecraft Chandrayaan-3 on Monday underwent one other manoeuvre, bringing it even nearer to the Lunar floor, ISRO mentioned.

The nationwide area company headquartered right here mentioned the spacecraft has now achieved a “near-circular orbit” across the moon.

Post its launch on July 14, Chandrayaan-3 entered into the lunar orbit on August 5, following which two orbit discount manoeuvres have been carried out on August 6 and 9.

“Orbit circularisation phase commences. Precise manoeuvre performed today has achieved a near-circular orbit of 150 km x 177 km,” ISRO mentioned in a tweet.

The subsequent operation is deliberate for August 16, round 8:30 am, it mentioned.

As the mission progresses, a collection of manoeuvres are being carried out by ISRO to progressively scale back Chandrayaan-3’s orbit and place it over the lunar poles.

According to ISRO sources, another manoeuvre can be carried out on the spacecraft on August 16 to succeed in 100 km orbit, following which the touchdown module, comprising the lander and rover will break free from the propulsion module.

After this, the lander is predicted to endure a “deboost” (the method of slowing down) and make a delicate touchdown on the south polar area of the Moon on August 23.

Last week, ISRO Chairman S Somnath mentioned essentially the most important a part of the touchdown is the method of bringing the speed of the lander from 30 km peak to the ultimate touchdown, and that the flexibility to switch the spacecraft from horizontal to vertical path is the “trick we have to play” right here.

He mentioned, “The velocity at the start of the landing process is almost 1.68 km per second, but this speed is horizontal to the surface of the moon. The Chandrayaan 3 here is tilted almost 90 degrees, it has to become vertical. So this whole process of turning from horizontal to vertical is a very interesting calculation mathematically. We have done a lot of simulations. It is here where we had the problem last time (Chandrayaan 2).” Further, it needs to be ensured that gas consumption is much less, the gap calculation is appropriate, and all of the algorithms are working correctly.

“Extensive simulations have gone, guidance design has been changed, and a lot of algorithms have been put in place to make sure that in all these phases required dispersions are handled….to attempt to make a proper landing,” he mentioned.

Over 5 strikes within the three weeks for the reason that July 14 launch, ISRO had lifted the Chandrayaan-3 spacecraft into orbits farther and farther away from the Earth. 

Then, on August 1 in a key manoeuvre — a slingshot transfer — the spacecraft was despatched efficiently in direction of the Moon from Earth’s orbit. Following this trans-lunar injection, the Chandrayaan-3 spacecraft escaped from orbiting the Earth and started following a path that will take it to the neighborhood of the moon.

Chandrayaan-3 is a follow-on mission to Chandrayaan-2 to exhibit end-to-end functionality in protected touchdown and roving on the lunar floor.

It contains an indigenous propulsion module, a lander module, and a rover with the target of growing and demonstrating new applied sciences required for inter-planetary missions.

The propulsion module will carry the lander and rover configuration until the 100 km lunar orbit. The propulsion module has a Spectropolarimetry of Habitable Planet Earth (SHAPE) payload to check the spectral and polarimetric measurements of Earth from the lunar orbit.

The mission goals of Chandrayaan-3 are to exhibit a protected and delicate touchdown on the lunar floor, to exhibit rover roving on the Moon, and to conduct in-situ scientific experiments.

The lander could have the potential to delicate land at a specified lunar web site and deploy the rover that may perform in-situ chemical evaluation of the Moon’s floor through the course of its mobility.

The lander and the rover have scientific payloads to hold out experiments on the lunar floor. 


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Tags: achieveschandrayaan 3 manoeuvre moon mission near circular orbit spacecraft lunar surface chandrayaan-3Chandrayaan3india's third moon spacecraftisroManoeuvreMoonNearCircularOrbitperformingSpacecraft
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