gslv mk3
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@$$ burning??
India's Mars Mission:- Some Amazing Pics
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@$$ burning??
kurup
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ISRO chief highly optimistic of its challenging Mars mission
The Indian Space Research Organisation (ISRO) is highly optimistic of the success of the country’s maiden inter-planetary probe to Mars from Sriharikota on November 5. The mission will begin its odyssey at 2.36 pm, with a window of only five minutes.
Each of the phases has its own challenges and problems as it is an inter-planetary mission with a long navigational path of 300 days from earth to the Martian orbit.
Speaking to Express, ISRO Chairman Dr K Radhakrishnan said: “This is a very complicated mission, but we have the capability to do it. We have developed new knowledge and we are very confident that we can achieve the navigation from earth to Mars accurately and properly. Although the influence of sun (varying solar pressure) and other planets have to be taken into account to make the mission a success, if we have done it for communication satellites, Chandrayaan and others, we can do it for this too. The previous experiences of launching four different missions with the same PSLV vehicle stands good as we have a good understanding of this rocket.”
Dr Radhakrishnan added that the levels of autonomy built in the spacecraft was such that it does not take any wrong decisions.
“The required level of autonomy onboard the spacecraft has been provided as the distance from the ground stations is 400 million km. For the first time, ground operations have been built into the satellite so that it can identify whether systems are functioning well. If not, it can switch over to standby systems. A second level of autonomy too has been provided, which is a chain of commands, stored in the computer and initiated in times of serious problems. The ground control finds a solution that puts the Mars Orbiter in a ‘safe mode’ facing the earth where it can receive the commands and open the solar panels,” he detailed.
This is the first time that Nalanda and Yamuna — the ships of the Shipping Corporation of India — have been requisitioned for tracking the ignition of the fourth stage of PSLV and a good amount of its powered phase, as there are no tracking stations in this region. Because of bad weather, there was a delay in the ships reaching their destination.
They have reached Fiji Islands now and will move 1,000 nautical miles eastwards on October 27.
http://idrw.org/?p=28588
The Indian Space Research Organisation (ISRO) is highly optimistic of the success of the country’s maiden inter-planetary probe to Mars from Sriharikota on November 5. The mission will begin its odyssey at 2.36 pm, with a window of only five minutes.
Each of the phases has its own challenges and problems as it is an inter-planetary mission with a long navigational path of 300 days from earth to the Martian orbit.
Speaking to Express, ISRO Chairman Dr K Radhakrishnan said: “This is a very complicated mission, but we have the capability to do it. We have developed new knowledge and we are very confident that we can achieve the navigation from earth to Mars accurately and properly. Although the influence of sun (varying solar pressure) and other planets have to be taken into account to make the mission a success, if we have done it for communication satellites, Chandrayaan and others, we can do it for this too. The previous experiences of launching four different missions with the same PSLV vehicle stands good as we have a good understanding of this rocket.”
Dr Radhakrishnan added that the levels of autonomy built in the spacecraft was such that it does not take any wrong decisions.
“The required level of autonomy onboard the spacecraft has been provided as the distance from the ground stations is 400 million km. For the first time, ground operations have been built into the satellite so that it can identify whether systems are functioning well. If not, it can switch over to standby systems. A second level of autonomy too has been provided, which is a chain of commands, stored in the computer and initiated in times of serious problems. The ground control finds a solution that puts the Mars Orbiter in a ‘safe mode’ facing the earth where it can receive the commands and open the solar panels,” he detailed.
This is the first time that Nalanda and Yamuna — the ships of the Shipping Corporation of India — have been requisitioned for tracking the ignition of the fourth stage of PSLV and a good amount of its powered phase, as there are no tracking stations in this region. Because of bad weather, there was a delay in the ships reaching their destination.
They have reached Fiji Islands now and will move 1,000 nautical miles eastwards on October 27.
http://idrw.org/?p=28588
Brahmos_2
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Spacecraft getting integrated on the PSLV-C25 vehicle
Propulsion System-Assembly of Oxidizer tank
ISRO's Mars Orbiter Mission Official Facebook Page :- https://www.facebook.com/pages/ISROs-Mars-Orbiter-Mission/1384015488503058?directed_target_id=0
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kurup
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For ISRO, Mars mission may turn out to be rocket science
If the Polar Satellite Launch Vehicle (PSLV) lifts off on November 5 from Sriharikota as planned, it will be watched by more than a normal share of anxious eyes. It is a difficult mission, and fickle weather adds to the complexity.
But ISRO chairman K Radhakrishnan is not prone to fits of worry. “The PSLV is the best vehicle in its class,” he says, “which is why many countries are using it now to launch their satellites.” A mission to Mars will require taking into account the influence of earth, the moon, the sun and, of course, the destination planet, all of which keep changing positions with the day of the launch.
A small error in calculation will miss the target by tens of thousands of miles. “The spacecraft’s arrival point on Mars has to be calculated to an accuracy of 60 miles about 280 days in advance,” says Radhakrishnan. “It takes beyond textbook mechanics to achieve this precision.” An excursion to the red planet does not come easy to even to the most experienced.
The Russians have a long history of failures in Mars missions. The Chinese have not yet attempted its own mission, and so Mangalyaan is extra special for India. “It will be a big leap for the country,” says Goverdhan Mehta, space commission member. The Americans, Russians and Europeans have used larger rockets for their Mars missions. India is using the smaller PSLV, usually used to put small satellites into a low-earth orbit over the poles. The launch window to Mars is very small, the next one being available only in 2018. ISRO has already postponed the launch once due to bad weather.
If the PSLV does not go up before November 19, ISRO has to wait for another five years to get similar conditions. The PSLV is India’s most mature rocket. ISRO has launched 35 satellites so far using PSLV and 10 are in waiting list for launch. The Mars mission will use PSLV in new ways, thereby adding new complexities. The trajectory of the spacecraft is very different to begin with.
The spacecraft’s arrival point on Mars has to be calculated to an accuracy of 60 miles about 280 days in advance,” says Radhakrishnan.
This new trajectory, the calculations for which are different for each launch date, requires a long coasting of the rocket between third and fourth stage. “The management of the long coast between third and fourth stage is a complex issue,” says V Adimurthy, Satish Dhawan professor and senior advisor (interplanetary missions) of ISRO. There is only one time slot for lift-off- with five minutes leeway – available for launch during a specific day.
“The time of lift-off and required coasting duration is different for each day of launch; and one has to work out a series of different trajectory management strategies corresponding to each possible launch date,” says Adimurthy. The satellite is first launched into an elliptical orbit at a velocity far less than what is required – over 11 km per second – for it to escape from the earth.
To make it come up to this velocity would require three to five manouevres using rockets in the spacecraft, depending on the velocity and position of the spacecraft when first injected. When it finally reaches Mars, not more than 60 km away from the intended spot, the spacecraft has to slow down for it to be captured into the Mars orbit. If this is not done with precision, the spacecraft will either fly by or crash into the Martian surface.Some of the difficulty is in the constraints imposed by the need to lower energy use. “We have devised an orbit that reaches Mars with minimum use of energy,” says Radhakrishnan. The more the energy required for the travel, the more the fuel the spacecraft has to carry, and hence the more the weight and more the cost. Other constraints were imposed by the harsh interplanetary environment like intense cold and high radiation.
Delay in communication is another problem as the spacecraft moves further and further away from the earth. The spacecraft has considerable autonomy to take decisions during critical periods.
When the Mangalyaan project was conceived, ISRO got 30 ideas for experiments. Out of these, nine instruments were possible to build and five were flyable. “So all the experiments possible were accommodated,” says Radhakrishnan. One of this is a methane sensor. Finding methane conclusively on Mars would be a major achievement for Mangalyaan.
http://idrw.org/?p=28617
If the Polar Satellite Launch Vehicle (PSLV) lifts off on November 5 from Sriharikota as planned, it will be watched by more than a normal share of anxious eyes. It is a difficult mission, and fickle weather adds to the complexity.
But ISRO chairman K Radhakrishnan is not prone to fits of worry. “The PSLV is the best vehicle in its class,” he says, “which is why many countries are using it now to launch their satellites.” A mission to Mars will require taking into account the influence of earth, the moon, the sun and, of course, the destination planet, all of which keep changing positions with the day of the launch.
A small error in calculation will miss the target by tens of thousands of miles. “The spacecraft’s arrival point on Mars has to be calculated to an accuracy of 60 miles about 280 days in advance,” says Radhakrishnan. “It takes beyond textbook mechanics to achieve this precision.” An excursion to the red planet does not come easy to even to the most experienced.
The Russians have a long history of failures in Mars missions. The Chinese have not yet attempted its own mission, and so Mangalyaan is extra special for India. “It will be a big leap for the country,” says Goverdhan Mehta, space commission member. The Americans, Russians and Europeans have used larger rockets for their Mars missions. India is using the smaller PSLV, usually used to put small satellites into a low-earth orbit over the poles. The launch window to Mars is very small, the next one being available only in 2018. ISRO has already postponed the launch once due to bad weather.
If the PSLV does not go up before November 19, ISRO has to wait for another five years to get similar conditions. The PSLV is India’s most mature rocket. ISRO has launched 35 satellites so far using PSLV and 10 are in waiting list for launch. The Mars mission will use PSLV in new ways, thereby adding new complexities. The trajectory of the spacecraft is very different to begin with.
The spacecraft’s arrival point on Mars has to be calculated to an accuracy of 60 miles about 280 days in advance,” says Radhakrishnan.
This new trajectory, the calculations for which are different for each launch date, requires a long coasting of the rocket between third and fourth stage. “The management of the long coast between third and fourth stage is a complex issue,” says V Adimurthy, Satish Dhawan professor and senior advisor (interplanetary missions) of ISRO. There is only one time slot for lift-off- with five minutes leeway – available for launch during a specific day.
“The time of lift-off and required coasting duration is different for each day of launch; and one has to work out a series of different trajectory management strategies corresponding to each possible launch date,” says Adimurthy. The satellite is first launched into an elliptical orbit at a velocity far less than what is required – over 11 km per second – for it to escape from the earth.
To make it come up to this velocity would require three to five manouevres using rockets in the spacecraft, depending on the velocity and position of the spacecraft when first injected. When it finally reaches Mars, not more than 60 km away from the intended spot, the spacecraft has to slow down for it to be captured into the Mars orbit. If this is not done with precision, the spacecraft will either fly by or crash into the Martian surface.Some of the difficulty is in the constraints imposed by the need to lower energy use. “We have devised an orbit that reaches Mars with minimum use of energy,” says Radhakrishnan. The more the energy required for the travel, the more the fuel the spacecraft has to carry, and hence the more the weight and more the cost. Other constraints were imposed by the harsh interplanetary environment like intense cold and high radiation.
Delay in communication is another problem as the spacecraft moves further and further away from the earth. The spacecraft has considerable autonomy to take decisions during critical periods.
When the Mangalyaan project was conceived, ISRO got 30 ideas for experiments. Out of these, nine instruments were possible to build and five were flyable. “So all the experiments possible were accommodated,” says Radhakrishnan. One of this is a methane sensor. Finding methane conclusively on Mars would be a major achievement for Mangalyaan.
http://idrw.org/?p=28617
HariPrasad
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Really Impressive.
The Russians have a long history of failures in Mars missions. The Chinese have not yet attempted its own mission, and so Mangalyaan is extra special for India.
Now let us see whether it successes or not? If success, it will prove that our scientist are certainly one of the best. No body can imagine to send this kind of mission in a very short period of time with tiny budget.
The Russians have a long history of failures in Mars missions. The Chinese have not yet attempted its own mission, and so Mangalyaan is extra special for India.
Now let us see whether it successes or not? If success, it will prove that our scientist are certainly one of the best. No body can imagine to send this kind of mission in a very short period of time with tiny budget.
Shardul.....the lion
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nov 5 is launch date right????
kurup
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Yes , Nov 5 it is .
Chronos
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If the past mars missions by other countries are any indication , the success rate is below 30% .
How is that an added benefit for us ??
You guys lagging behind us by decades will be the added benefit .......
Could you please stop that?
A lot of the attiude from Pakistani posters and othr have been largely positive. Let's not make science political. Knowledge belongs to Humanity.
kurup
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It was a light joke . Hopefully the person who I was responding to understood it and liked it .
You cannot see the like because of the forum upgrade .
gslv mk3
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He joined this forum long ago mate,and he knows more about their behaviour than you.Check out the threads about past gslv failures and you will know.
Chronos
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sorry.But yes, I have seen some of their antics.
Hafizz..... Wait, did I say that?
The late Salman Taseer made a joke about Indian Space launch failures.
3 days before he was gunned by his bodyguard. That about sums it up.
gslv mk3
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But yes, I have seen some of their antics.
Hafizz..... Wait, did I say that?
The late Salman Taseer made a joke about Indian Space launch failures.
3 days before he was gunned by his bodyguard. That about sums it up.
These geniuses are at the same level we are in 1970s ( in case of satellites) & not even at 1970s (when sounding rockets are concerned,they doesnt have SLVs) .
here is another mountain goat,and supporter of water car scientist
let them bark,meanwhile.........
Hylas 1,built for EADS
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