Isro chairman K Sivan told TOI about the moon's journey: "Chandrayaan-2 will take six days to get on the Moon orbit to the Moon on August 20." The total distance from the earth to the moon is 3.84 lakh kilometers.
To bring Chandrayaan-2 into the lunar orbit of Perigee (the point in orbit closest to Earth's vehicle), Isro first raised the lunar vehicle's elliptical orbit around the earth by performing five maneuvers , The fifth maneuver was successfully completed on August 6, when the propulsion system was fired for a duration of 1,041 seconds, whereupon Isro said that all the parameters of the moon plane were normal. Of 3,850 kg (takeoff weight) of Chandrayaan-2, 2,542 kg are just the weight of the fuel.
Entering the Moon's sphere of influence, Chandrayaan-2's on-board drive system is re-fired to slow the vehicle and place it in a temporary orbit around the Moon.
Through a series of maneuvers, the orbit of Chandrayaan-2 is circularized around the Moon at a height of 100 km from the lunar surface. Sivan said, "As if we had raised the earth orbit of Chandrayaan-2 with the help of the propulsion system to remove the vehicle from Earth, we will use the propulsion system to lower the lunar orbit of Chandrayaan-2, we will make five to six maneuvers to reduce orbit. "After that, Lander & # 39; Vikram & # 39 ;, named after the father of the Indian space program Vikram Sarabhai, will be separated from the orbiter and hit a 100km x 30km orbit around the moon. As soon as the lander reaches 30 km altitude on September 6, the final descent to the lunar surface begins.
The Isro chief told TOI: "The last 30km descent for 15 minutes will be the most frightening moments for Team Isro as we are about to complete this most complex operation for the first time, the last departure from Chandrayaan-2 The engines are moving in the opposite direction to reduce the speed of the spaceship. "It will be like having a newborn for the first time," he said.
When the Chandrayaan 2 team under the direction by project director M Vanitha and mission director Ritu Karidhal can land the lunar ship successfully in the early hours of September 7. India will be the fourth country in the world to land its spacecraft on the moon.
After landing, lands Pragyan Rover, Im Housed in Vikram-Lander, it is left behind at a speed of 1 cm per second after four hours, during which its life of one lunar day (14 earth days) moves Pragyan up to 500 meters on the lunar surface Images are taken and content is analyzed on the moon Send back data about Vikram or the orbiter to Earth within 15 minutes.
While Vikram and Pragyan last a lunar day, the orbiter will orbit the moon for more than a year, imaging the moon and taking pictures of various areas to seek water and "new science." A passive payload from Nasa, the Laser Retroreflector Array attached to Vikram, calculates the distance between the Earth and the Moon and helps to determine the exact position of the lander on the Moon.
Chandrayaan-2 is loaded with 13 Desi payloads, which carry out a detailed study of topography, seismography, mineral identification and distribution, chemical surface composition, thermophysical properties of the upper soil, and the composition of the weak lunar atmosphere in order to gain a new understanding to learn about the origin and evolution of the moon.
In video: Chandrayaan-2 leaves Earth orbit and enters transmondal orbit