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- ISRO Chandrayaan 3 Update; Vikram Lander Pragyan Rover Reactivation | ISRO Moon Mission
Bengaluru24 minutes ago
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ISRO started the automatic landing process on August 23 at 5.44 pm from an altitude of 30 km. 20 minutes later, at 6.04 pm, lander Vikram landed on the lunar surface.
ISRO will make efforts to wake up Chandrayaan-3’s rover Pragyan and lander Vikram today on September 23. The Indian Space Agency had said yesterday on September 22 that there are no signals from Chandrayaan yet. Our efforts to establish contact will continue.
After 14 days of night, sunlight has once again started reaching the South Pole of the Moon. In such a situation, ISRO is hopeful of waking up Vikram Lander and Pragyan Rover which were put on sleep mode. ISRO had put the lander in sleep mode on September 4. Earlier on September 2, the rover was put into sleep mode. ISRO has kept the receivers of Lander-Rover on.
Rover in such a direction that sunlight falls on the solar panel
ISRO had kept the batteries of lander Vikram and rover Pragyan fully charged before putting them in sleep mode. The rover was placed in such a direction that at sunrise, sunlight fell directly on the solar panels. It is expected that it will start working again.
ISRO shared this video on August 25. In this, Pragyan Rover is seen coming out of the ramp of the lander.
Chandrayaan-3 mission was launched on 14 July 2023
Chandrayaan-3 was launched on 14 July 2023 at 2:35 pm. It was sent into space through LVM3 rocket from Satish Dhawan Space Center in Sriharikota in Andhra Pradesh. On August 23, it landed on the South Pole of the Moon. India is the first country to do so.
Chandrayaan-3 mission was launched on 14 July 2023 from Satish Dhawan Space Center, Sriharikota.
Sulfur discovered at South Pole, Vikram’s landing again
- Big difference in surface and depth temperatures: On August 28, the CHASTE payload fitted in the lander had revealed that there is a significant difference in temperature on the surface and different depths of the Moon. The temperature on the surface was around 50°C and at a depth of 80mm it was minus 10°C.
- Sulfur discovered on the surface of the moon: ISRO had said on August 29 that the LIBS payload mounted on the rover had detected sulfur at the South Pole. Apart from this, aluminium, calcium, iron, chromium, titanium, manganese, silicon and oxygen were also detected.
- Sulfur confirmed from another payload: ISRO had said on August 31 that Alpha Particle X-ray Spectroscope (APXS), another instrument mounted on the rover, has confirmed sulfur here. Along with this, APXS also detected some other minor elements.
- Vibration record of rover and payload: ISRO had said on August 31 that the Lunar Seismic Activity Payload (ILSA) mounted on the lander recorded vibrations caused by the movement of the rover and other payloads. Another incident on the Moon was also recorded on August 26.
- Plasma less dense near the Moon’s surface: On August 31, ISRO had said that the Langmuir Probe (RAMBHA-LP) payload mounted on the lander had taken the first measurement of the lunar plasma atmosphere in the South Pole region. It revealed that the plasma is less dense near the surface of the Moon.
- Vikram landed again: ISRO had re-landed Vikram Lander on the lunar surface on September 3. ISRO said that the lander was lifted 40 cm and landed safely at a distance of 30 to 40 cm. This was called hop experiment i.e. jump test.
This picture of Vikram Lander has been taken with the help of two navigation cameras installed on Pragyan Rover. ISRO said- This is a 3-channel picture.
ISRO conducted the hop experiment on September 3 and re-landed the Vikram lander on the lunar surface.
Soft landing of Chandrayaan-3 lander took place in 4 phases.
ISRO started the automatic landing process on August 23 at 5.44 pm from an altitude of 30 km and completed the journey in the next 20 minutes.
Chandrayaan-3 orbited the Earth 21 times and the Moon 120 times in 40 days. Chandrayaan traveled 55 lakh km to cover 3.84 lakh km distance to the moon.
1. Rough Breaking Phase:
- The lander was 750 Km away from the landing site. Altitude 30 Km and speed 6,000 Km/hr.
- This phase lasted for 11 and a half minutes. During this time the sensors of Vikram Lander were calibrated.
- The lander was brought to a distance of 7.4 Km from a height of 30 Km in horizontal position.
2. Attitude Holding Phase:
- Vikram took a photo of the moon’s surface and compared it with the already existing photos.
- During the time of Chandrayaan-2, this phase was of 38 seconds, this time it was reduced to 10 seconds.
- In 10 seconds, the height of Vikram Lander from the Moon decreased from 7.4 Km to 6.8 Km.
3. Fine Breaking Phase:
- This phase lasted for 175 seconds in which the speed of the lander became 0.
- The position of Vikram Lander was made completely vertical.
- The height of Vikram Lander from the surface remained about 1 kilometer.
4. Terminal Descent:
- In this phase the lander was brought to a height of about 150 meters.
- When everything went well, a soft landing was made on the surface of the moon.
On August 23, Vikram Lander made a soft landing on the South Pole of the Moon.
Why Chandrayaan-3 mission is only for 14 days?
Chandrayaan-3 mission was only for 14 days. This is because one day on the Moon is equal to 14 days on Earth. It is such a big night. That means there is night for 14 days and sunlight for 14 days on the Moon. At night the temperature at the South Pole of the Moon drops to minus 200 degrees.
Rover-lander can generate power in sunlight, but power generation stops at night. Due to stoppage of power generation, electronics cannot withstand severe cold and may get damaged. Countries like America and Russia also use nuclear fuel for power, so their missions last longer.
This was India’s third mission to the moon, water was discovered in the first mission.
Chandrayaan-1 was launched in 2008. In this, a crash landing of a probe was done in which water was found on the moon. Then in 2019, Chandrayaan-2 reached close to the moon, but could not land. Chandrayaan-3 landed on the moon on 23 August 2023. Chandrayaan-3 also sent the message of reaching the moon safely. Said- ‘I have reached my destination.’
Read this news also…
Whether humans can settle on the Moon or not: Will a way be found to find a planet like Earth; What will Chandrayaan-3 do in 14 days?
With the soft landing on the South Pole of the Moon, India has become the first country in the world to do so. The biggest objective of Chandrayaan 3 mission was to test and demonstrate the technology of soft landing on the Moon. India has succeeded in this objective. Read the full news…
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