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India Moon Mission (Chandrayaan-2)


                                 India Moon Mission (Chandrayaan-2)

well, India's second visit to the moon is the most complex mission ever to be undertaken by a straw in deist heaviest rocket often dubbed the GLVC will lift off from Sriharikota carrying an orbiter Lander named Vikram and a rover called Prague on. An effort to unravel the mysteries of the moon and take India's flag to the lunar surface our science editor Paula Bagua uses animation from Israel to explain the complexities of this truly incredible mission standing majestically on the launch pad India's most powerful rocket as the countdown precedes the 640 ton 44 meter tall monster the geosynchronous satellite launch vehicle mark 3 will lift chandrayaan-2 into orbit one by one the rocket stages will drop off taking the satellite higher the moon-bound 3.8 and chandrayaan-2 satellite will be released it will take several revolutions of the earth before it will be shot off on its long 3.84 lakh kilometer journey to the moon. It will then be slowed down so that the moon's gravity can capture it the composite body will spend several days in the moon orbit on commands from each row the Vikram lander with the pregnant rover. Its belly will be released to land on the lunar surface the orbiter will continue to go around the moon the Vikram lander will start a journey dubbed the 15 minutes of Terror to the lunar surface the orbiter and the lander will together search for the best site to land using onboard cameras the lander will come in for its final approach to land on the lunar surface a ramp will then be deployed and the Indian flag will reach the moon's surface the pregnant Rover will be rolled out onto the lunar surface the rover and the lander.

Baahubali Rocket
 I expected to work on the lunar surface for 14 days India will leave an indelible mark on the moon's surface the Israel logo and the Ashoka Chakra carved on the lunar surface for perpetuity using an animation made and supplied, when it looks absolutely incredible doesn't it is truly a dream and will that dream actually come true that's a big question Apollo joins us as does mother-in-law the former deputy director of the Vikram Sarabhai Space Station both you gentlemen are looking terribly serious that's more like it Mrs. mother-in-law are you what it is that why there's that little bit of a frown on your face also because it's an incredibly complex mission let's face it yes it is a very very complex mission which is Rory's undertaking but I am not really worried because Israel basically you know tries it's best to test out everything before the launch and get the confidence, so I think we have no worries because everything has been working very well so far and we expect that like children 1 we will have success in the first attempt itself as far as Tamron 2 is concerned Paul f 2:50 am right on Monday, Sunday night, Monday morning that's when it's all happening the president will be at 3 hydric odor as well that is true.


 India's only spaceport as the GLVC rocket heads off for a journey to the moon a chandrayaan-2 is very special it's a three-in-one mission it has a lander orbiter and a rover something which India has never done before to soft-land on the moon and then to soft-land very close to the South Pole of the moon where nobody has gone before not even the Americans, not the Russians not the Chinese so India will create history if it reaches that point and trust me in Israel dr. Mullen Lyle is saying they are not worried but the folks were manning chandrayaan-2 are deeply worried.

Today because it's a complex mission okay this is an interesting picture I was just going to ask for it this is a picture of the GSLV it's been a somewhat problematic rocket in the past but it's also India's most powerful rocket we hope everything has been sorted out.  "Why do we need the GSLV for missions?"  it is a composite body, that is the orbiter Lander and the robot the total mass is 3.8 tons which cannot be carried by any other launch vehicle India has so obviously we had to go for u.s. lb mark 3 Paula will talk about we will talk about the rover the orbiter and the satellite itself but let's talk a little bit about GSLV it's got a cryogenic stage at least one cryogenic stage that I am aware of it's solid-fueled it correct me if I'm wrong in most of its stages.

 It's an incredible world-class platform and it's entirely Indian this is very much the pinnacle of Indian rocket design -is that right certainly it's a very elegant rocket world over people and my the mark 3 which is the geosynchronous satellite launch vehicle mark 3 it has had to consecutively successful launches which is why is rover deploying it for its chandrayaan-2 mission that vehicle which has given its flow problem is the geosynchronous satellite launch vehicle mark 3 with the current sorry mark-I apologize for mark - which the current chairman had once characterized as the naughty boy of his role so the naughty boy is history the mark 3 is in place and the mark 3 hopefully should perform and India's chandrayaan-2 satellite should go up.

Chandrayaan 1

 The man who put India's flag or at least crash-landed India's flag onto the lunar surface on chandrayaan-1 so dr. Madan Lal has played a critical role in India's moon impact probe going down onto the lunar surface and chandrayaan-2 is also going to be landing very close. Now is a massive leap up from that so in simple terms for our viewers can you explain why it's difficult to separate a lander from the overall probe guided on to the surface of the Moon ensure that it makes a soft landing right I think as you rightly said that you know till we put the satellite into the orbit of the moon I think more or less we know we have done it in Chandra and one the difference starts from there on that is in Chandra and one we separated the moon impact probe and then we are boosted and then pointed it towards the moon surface and after it impacted on the moon surface the mission was over here the purpose is entirely different that is we are having a lander which is supposed to soft-land.

Problems may appear for chandrayaan-2

 when we say soft-land the velocity on touchdown should be around two to three meters per second whereas in moon impact probe the velocity was very very high we are talking of something like 1600 meters per second or so obviously whatever the design you do it will crash and it will get you know cut into a pieces but here since we have to soft-land and the moon does not have any atmosphere so arrow  breaking is not going to be there, at the same time we have to reduce the speed so that it comes down to 2 to 3 meters per second so this is where the complexity starts how exactly what kind of thrusters we should have which can reduce the speed but at the same time you know. It should not create any other problems and especially you see when we ignite these thrusters near the surface of the moon to maintain that velocity there is a lot of dust there will be a lot of dust and the gases coming out of the thrusters, which will backfire which will be going backward and that way you see these particles. They can go and stick to the different surfaces of you know lender and as a result, you know it can do damage to certain instruments critical. Well India has created a six-wheeled rover which is 27 kilograms in weight and it will do some science on the moon it travels really really fast about one meters per second one centimeter by 1 centimeter per second and within that in its entire lifetime of 14 earth days it can travel a max of about half a kilometer on the moon's surface but what will happen within hours of it landing would be that the rover would send back a picture of the lander and the lander would send back a picture of the rover so the first selfies from the lunar surface are likely to arrive in India sometime very soon after the soft landing and soft landing is not easy the issue.

 The moon-landing will happen in the first week of September tentatively between 6 or 7th of September.


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