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1. CHANDRAYAN-3
Presented By ~
Sanya Kumari

2. OBJECTIVE ~
• Chandrayaan-3 mission consists of the main objectives of
exhibiting end-to-end capability in safe landing and roving
on the lunar surface. The successful soft landing of this
mission will make India the fourth nation to have done
it after the United States, the former Soviet Union and
China.

3. BACKGROUND ~
• As part of the Chandrayaan programme to demonstrate soft landing on the Moon, ISRO
launched Chandrayaan-2 on board a Launch Vehicle Mark-3 (LVM 3) launch vehicle
consisting of an orbiter, a lander and a rover. The lander was scheduled to touchdown
on the lunar surface in September 2019 to deploy the Pragyan rover.
• The European Space Tracking (ESTRACK) operated by European Space Agency (ESA)
will support the mission according to a contract. Under the new cross-support
arrangement, ESA tracking support could be provided for upcoming ISRO missions such
as those of India’s first human spaceflight programme, Gaganyaan, the Chandrayaan-3
lunar lander and the Aditya-L1 solar research mission. In return, future ESA missions
will receive similar support from ISRO’s own tracking stations.

4. DESIGN ~
• Chandrayaan-3 comprises three main
components:
• Propulsion Module:
• The propulsion module will carry the lander and rover configuration till
100 km lunar orbit. It is a box-like structure with one large solar panel
mounted on one side and a large cylinder on top (the Intermodular
Adapter Cone) that acts as a mounting structure for the lander. In
addition to the lander, the module carries a payload called Spectro-
polarimetry of Habitable Planet Earth (SHAPE) to study the spectral and
polarimetric measurements of Earth from the lunar orbit in the near-
infrared (NIR) wavelength range (1-1.7 μm).

5. PROPULSION
MODULE

6. • Lander:
• The lander is responsible for the soft landing on the Moon. It is also box-
shaped, with four landing legs and four landing thrusters of 800 newtons
each. It will be carrying the rover and various scientific instruments to
perform in-site analysis. The lander for Chandrayaan-3 will have only four
throttle-able engines, unlike Vikram on Chandrayaan-2 which had five 800
Newtons engines with a fifth one being centrally mounted with a fixed
thrust.[citation needed] Additionally, the Chandrayaan-3 lander will be
equipped with a Laser Doppler Velocimeter (LDV).The impact legs are
made stronger compared to Chandrayaan-2 and increased instrumentation
redundancy. ISRO is working on improving the structural rigidity and
adding multiple contingency systems.
• The lander has three payloads:
Chandra's Surface Thermophysical Experiment (ChaSTE) will measure the
thermal conductivity and temperature of the lunar surface.
Instrument for Lunar Seismic Activity (ILSA) will measure the seismicity
around the landing site.
Langmuir Probe (LP) will estimate the plasma density and its variations.

7. LANDER

8. • Rover:
Chandrayaan-3 Rover Overview:
• Six-wheeled design
• Weight of 26 kilograms (57 pounds)
• Range of 500 metres (1,600 ft)
• Scientific instruments including cameras, spectrometers, and a drill
• Expected lifespan of one lunar day (14 Earth days)
• Communication with the lander and ground control team in India
The rover has two payloads:
• Alpha Particle X-Ray Spectrometer (APXS) will derive the chemical composition and infer mineralogical
composition of the lunar surface.
• Laser Induced Breakdown Spectroscope (LIBS) will determine the elemental composition (Mg, Al, Si, K, Ca, Ti,
Fe) of lunar soil and rocks around the lunar landing site.
The Chandrayaan-3 Rover is expected to make a number of important scientific discoveries, including:
• The composition of the lunar surface
• The presence of water ice in the lunar soil
• The history of lunar impacts
• The evolution of the Moon’s atmosphere

9. ROVER

10. LAUNCH ~
• Chandrayaan-3 was launched on 14 July 2023, at 2:35 pm IST as
scheduled, from Satish Dhawan Space Centre in Sriharikota, Andhra
Pradesh, India. The spacecraft has been effectively placed in the trajectory
it will take to reach the moon. It is anticipated that the Chandrayaan-3
mission will achieve a soft landing on the lunar South Pole region on 23
August.
• Choosing the month of July for the launch of Chandrayan 3 was a special
move because of a calculation made by ISRO regarding the closeness of
Earth and Moon.

11. FUNDING ~
• In December 2019, it was reported that ISRO requested the initial funding of the
project, amounting to ₹75 crore (US$9.4 million), out of which ₹60 crore (US$7.5
million) will be for meeting expenditure towards machinery, equipment and other capital
expenditure, while the remaining ₹15 crore (US$1.9 million) is sought under revenue
expenditure head.
• Confirming the existence of the project, ISRO's former chairman K. Sivan stated that
the estimated cost would be around ₹615 crore (equivalent to ₹721 crore or US$90
million in 2023).

12. MISSION EXECUTIVE ~
• Mission Director : S. Mohanakumar
• Associate Mission Director : G. Narayanan
• Vehicle Director : Biju C Thomas
• Associate Vehicle Director : P. K. Sudeesh Kumar
• Spacecraft Director : Dr. P. Veeramuthuvel

13. THANK
YOU