It has started conducting tests for its ambitious Chandrayaan-2 mission at its facility in Challakere in Karnataka, where simulated lunar craters have been created for landing mission?, ISRO Chairman AS Kiran Kumar said on Friday.

According to Kumar, ?several craters, resembling the terrain of the Moon, have been created on the ground at the facility to test instruments and sensors on the lander of Chandrayaan-2.?

"We are doing some tests with regard to the Moon landing mission of Chandrayaan-2. For that, an aircraft carrying some of the instruments is being flown over this simulated area at our facility in Challakere," Kumar told reporters on the sidelines of a function held at Physical Research Laboratory (PRL) in Ahmedabad.

"We have created some craters there. These tests are part of our 'hazard avoidance and landing' exercise. The lander is supposed to come down and land (on the Moon). We have to make sure that it lands at a place which does not have too much of slope. Otherwise, one of the legs of the lander would stuck in a crater," Kumar said.

"There will be instruments on the lander. To make sure that these instruments work when it lands on the Moon, we are doing some simulations and that is one of the activities going on at Challakere" Kumar, who also serves as the Secretary in the Department of Space and Chairman of Space Commission, said.

"Tests are also going on to check the engines which provide required thrust to the lander in order to bring down it's velocity to compensate the lunar gravity during the landing," Kumar added.

Kumar also mentioned that they are planning to launch Chandrayann-2 in 2017 or 2018. He is coming here to become the part of 'Shri Hari Om Ashram Prerit Dr. Vikram Sarabhai Research Awards-2015' and 'PRL Award-2015'.

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