23rd AUGUST 2023 ENGLISH TNPSC CURRENT AFFAIRS PDF TNPSC SHOUTERS
Chandrayaan 3 successfully lands on the moon - making new history as the first country to reach the South Pole
- The Indian Space Research Organization (ISRO) designed the Chandrayaan-3 spacecraft equipped with artificial intelligence technology at a cost of around Rs 250 crore to explore the moon. It weighs 3,895 kg. Since Chandrayaan-2's orbiter is already orbiting the moon, this time only the lander and rover parts were included in the spacecraft.
- Chandrayaan-3 was launched by LVM-3 rocket from the launch pad at Sriharikota on July 14. LVM-3 successfully placed the spacecraft into its planned geo-elliptical orbit 16 minutes after liftoff.
- As already announced, Chandrayaan-3 landed on the moon last evening with all the preparations completed. The work was done at 5.44 pm. The event was telecast live from ISRO's research center in Bengaluru.
- 25 km from the moon. On reaching the altitude, landing operations were initiated via the artificial intelligence capable computer in the lander. At that time the speed of the lander was 6,000 km per hour. was at the level of Work was carried out to reduce its speed using the reverse force procedure.
- For this purpose, the 4 fluid engines mounted on the quarter of the Lender were operated at a steady state for about 10 minutes. It reduced the spacecraft's speed by 1,200 km/h and brought the lander to an altitude of 7.4 km/h.
- Thus the speed of the lander was gradually reduced until it reached an altitude of 800 meters above the ground, until the legs of the inclined spacecraft were turned vertically downwards for landing.
- At the same time, the artificial intelligence computer in the lander used the camera on the spacecraft to image the surface of the moon and ensure the correct landing trajectory. The lander then continued its journey along the path, reducing the thrust of its liquid engines and reaching an altitude of 150 meters. At this point the lander was suspended for a few seconds. Then the engines in its legs gave upward thrust to prevent the lander from being pulled down by the moon's gravity.
- In this environment, with the help of the 'Danger Sensing Danger Avoidance Camera' on the spacecraft, the area to be landed was explored and a safe flat surface was selected. The lander was then lowered from 150 meters to 60 meters. The laser doppler velocity sensor in it was used to calculate how fast the spacecraft was going down and how fast it could land.
- Next brought to an altitude of 10 meters, the liquid engines were shut down to prevent dust from rising up from the lunar surface. The lander made a successful landing between the Monsinus C and Boguslawski craters near the south pole of the Moon at 6.04pm after passing through a very hectic risk phase.
- With this success, India has created a new era by becoming the 4th country after USA, Russia and China to land a spacecraft on the moon and the first country to visit the South Pole.
- The indigenously developed Astra missile was successfully test-fired from the Tejas, the first indigenously developed fighter jet.
- AV successfully test-fired Astra missile from Tejas aircraft at an altitude of 20,000 feet off the coast of Goa. All objectives of this test have been met.
- An Agreement on Standard Operating Procedures for Exchange of Merchant Shipping Information was signed today (23.08.2023) between the Indian Navy and the Philippine Coast Guard.
- The signing of this Standard Operating Procedures Agreement between the Philippine Coast Guard and the Indian Navy facilitates the exchange of information on merchant shipping. It will also contribute to improved marine conservation in the region.
