Monday, May 27, 2024

Chandrayaan-3 to Launch on July 14, Soft Landing Expected


The Indian Space Research Organisation announced on Thursday that the Chandrayaan-3 mission is scheduled to be launched at 2.35 pm on July 14, with the lander expected to soft-land on the surface of the Moon on August 23 or 24. 

Chandrayaan-3 is a follow-on mission to Chandrayaan-2 to demonstrate end-to-end capability in safe landing and roving on the lunar surface.

The Chandrayaan-3 spacecraft, which will be launched by LVM3 (Launch Vehicle Mark-III) (earlier referred as GSLV Mk III), is a composite of three modules — propulsion, lander, and rover (which is housed inside the lander).

“LVM3-M4/Chandrayaan-3 Mission:The launch is now scheduled for July 14, 2023, at 2:35 pm IST from SDSC, Sriharikota”, the national space agency headquartered here said in a tweet.

Secretary of the Department of Space and ISRO Chairman Somanath S told reporters that the space agency would attempt soft-landing of the lander on August 23 or August 24.

ISRO officials noted that the mission life of the lander is one lunar day, which is equal to 14 Earth days.

“The date (for soft-landing) is decided based on when there is sunrise on the Moon. While landing, sunlight must be there. There is sunlight on the Moon for 14-15 days and for the next 14-15 days there is no sunlight,” they noted.

Chandrayaan-3 mission carries scientific instruments to study the thermo-physical properties of the lunar regolith, lunar seismicity, lunar surface plasma environment and elemental composition in the vicinity of the landing site.

While the scope of these scientific instruments on the lander and the rover would fit in the theme of “Science of the Moon”, another experimental instrument will study the spectro-polarimetric signatures of the Earth from the lunar orbit, which would fit in the theme of “Science from the Moon”, according to ISRO officials.’.

In March this year, the Chandrayaan-3 spacecraft successfully completed the essential tests that validated its capability to withstand the harsh vibration and acoustic environment that the spacecraft would encounter during its launch.

The propulsion module, which has Spectro-polarimetry of Habitable Planet Earth (SHAPE) payload to study the spectral and polarimetric measurements of Earth from the lunar orbit, will carry the lander and rover configuration till 100 km of lunar orbit.

Lander payloads are: ‘Chandra’s Surface Thermophysical Experiment’ to measure the thermal conductivity and temperature; ‘Instrument for Lunar Seismic Activity’ for measuring the seismicity around the landing site; and ‘Langmuir Probe’ to estimate the plasma density and its variations.

A passive Laser Retroreflector Array from the US space agency, National Aeronautics and Space Administration (NASA), is also accommodated for lunar laser ranging studies.



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