#Chandrayaan2 #ISRO UH25 (fuel) filling of liquid core stage (L110) of #GSLVMkIII-M1 completed Updates to continue... — ISRO (@isro) 1563727053000

Filling of N204 for the liquid core stage (L110) of #GSLVMkIII-M1 commenced #Chandrayaan2 #ISRO Updates will continue..... — ISRO (@isro) 1563738911000

Filling of N204 for the liquid core stage (L110) of #GSLVMkIII-M1 completed today (22.07.2019) at 0240 hrs IST #Chandrayaan2 #ISRO — ISRO (@isro) 1563762272000

CHENNAI: Tension will peak at the Sriharikota spaceport after 1.30pm on Monday, about an hour before the lift-off, when Isro will redo the helium-filling in the cryogenic engine which suffered a glitch that forced an abortion of Chandrayaan-2 on July 15.Late on Saturday, the space organisation said that the performance of Chandrayaan-2 was normal after rehearsals for the rescheduled launch at 2.43pm on Monday. Isro chairman K Sivan, who reached Sriharikota on Sunday, told reporters at Chennai airport that the mission will be a success, and that the agency expects Chandrayaan-2 to discover several new things on the Moon.Live updates: Chandrayaan-2 launch“Corrective measures have been taken ... it took us more than a day to do that after the glitch was discovered leading to the cancellation. I can assure you that there will be no such technical snag this time,” Sivan said.Isro engineers and scientists at the spaceport, however, are spending anxious hours during the run-up, cross-checking that everything is in place. “Whether it is a Moon mission or a Mars mission, whether we are launching a PSLV or a GSLV, the drill is the same. Yes, the tension is more palpable this time,” said a source.The 20-hour countdown for the July 22 launch started at 6.43pm on Sunday. Filling of propellants started late on Sunday night and will continue on Monday. For all the GSLV-MkIII launches, Isro first fills the solid propellants in the rocket boosters after the countdown begins.Then it fills the propellants in the core stage (L110), which is a liquid engine using Unsymmetrical dimethylhydrazine and nitrogen tetroxide. Then follows the filling of fuel in the cryogenic stage — liquid hydrogen and liquid oxygen — and then helium.Read this story in Marathi