CHANDRAYAAN -3

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Chandrayaan-3 is the third lunar exploration mission by the Indian Space Research Organization (ISRO). 
It consists of a lander and the Pragyan rover similar to Chandrayaan-2, but does not have an orbiter. 
Its propulsion module behaves like a communication relay satellite.
 The propulsion module carries the lander and rover configuration until the spacecraft is in a 100 km lunar orbit

Propulsion Module:

Chandrayaan -3 Propulsion

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)

Lander:


Chandrayaan-3 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 carry 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.[23]

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.
  • Rover:
  • 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
Blog Posted By J.Jagan Rupchand. / Lecturer / EEE

Comments

  1. Kesavan17 July 2023 at 22:25

    What was the failure of chandrayaan 1 & 2 sir🤔?

    ReplyDelete
  2. Jagan Rupchand18 July 2023 at 08:01

    India's Chandrayaan-1 played a crucial role in the discovery of water molecules on the Moon. Chandrayaan-1 was India's first deep space mission. Among its suite of instruments, it carried NASA's Moon Minerology Mapper (M3), an imaging spectrometer helped confirm the discovery of water locked in minerals on the Moon.
    Chandrayaan-2's soft landing was failure at the last minute (the lander had lost communication with the ground state just 2.1 km above the moon's surface) but all the operations before that were successful…4 days ago.
    But actually Chandrayaan 2 is not failure it is partially sucessfull.

    ReplyDelete

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