ISRO (Indian Research Organization) will simulate various scenarios to find out why Vikram Lander failed to land smoothly on moon's surface, said a retired senior ISRO official. According to him, ISRO has to see wher any simulation prior to launch was overlooked. simulation will include what it had t done and what it had assumed to arrive at probable cause of its moon lander Vikram hitting lunar surface after veering away from its plotted path and losing communication. On September 7, Vikram Lander made a crash landing on Moon's south polar region and lost all communication. 

According to experts, rmally any data loss from a satellite suggests that craft has suddenly changed its attitude. loss of communication link means that target/satellite experienced a large angular rotation. Furr,  loss of communication link could also be due to wrong input being loaded on to lander. According to an official, Chandrayaan-2 mission was done into four parts: putting Chandrayaan-2 craft into earth orbit; taking it into moon orbit; soft landing of lander Vikram; and rover Pragyan rolling down to carry out scientific experiments. Out of se, first two proved to be successful. 

Also read: Chandrayaan-2: bel Laureate Serge Haroche says 'ISRO will fix it'

Also read: NASA to try to capture ISRO's Vikram Lander on camera on Lunar surface

Chandrayaan-2 

On July 22, Chandrayaan-2 was launched into  India’s heavy lift rocket Geosynchrous Satellite Launch Vehicle-Mark III (GSLV Mk III). Chandrayaan-2 craft comprised of three segments - Orbiter, Vikram and Pragyan. craft had successfully completed revolving around five orbits. On September 2, Vikram Lander was separated from orbiter and had started its journey towards lunar surface. It was aimed for a soft-landing on moon's south polar region, making India fourth country to do so. 

Also read: 'Vikram Lander spotted on Lunar surface by Orbiter': ISRO to ANI

Vikram's landing 

On September 7 morning at 1:50 AM when Vikram was scheduled to land, ISRO's Deep Antenna lost communication with Chandrayaan-2's lander - Vikram as it descended towards lunar surface. lander had descended from 30 km to 2 km smoothly. During final smooth braking st, it had lost communication with Mission Control. 

Also read: ISRO: Vikram lander located by Chandrayaan-2's orbiter, all efforts on