Indian Space Capabilities

[nitesh]

The Statesman

ndia approves satellite navigation project

Statesman News Service
NEW DELHI, Sept. 11: For providing seamless navigation over Indian airspace and waters, the government today approved implementation of Rs 774-crore Global Positioning System (GPS) aided Geo Augmented Navigation (Gagan) project.
This project involves development of indigenous technology in frontier areas and is expected to yield a number of benefits to the aviation sector.
Apart from enabling aircraft to navigate on a straight path instead of navigating in a zig-zag path over land based stations, it will provide coverage of oceanic areas which is not possible by terrestrial systems. It will increase safety by using three dimensional (3D) approach operations-enabling multiple approach capability, improve airport and airspace access in all weather conditions, enhance reliability and reduce delays.
It will also help airlines’ cause by providing fuel-efficient air corridors and providing CAT-I approaches without ground element support. The Indian Space Research Organisation and the Airports Authority of India (AAI) are developing this system jointly. “With implementation of Gagan, India will become
the fourth country in the world to have a satellite based navigation system,” a spokesperson said.
The civil aviation minister, Mr Praful Patel, said the GAGAN system will be in place by 2011 and it will make flying much safer than at present. He said of the Rs 774 crore estimated expenditure on the project, AAI would spend Rs 580 crore.
The implementation of the Gagan programme is being realised in two phases. The first, Gagan TDS phase (Technology Demonstration System), was completed in August, 2007.

 

[Marshal]

The Statesman

ndia approves satellite navigation project

Statesman News Service
NEW DELHI, Sept. 11: For providing seamless navigation over Indian airspace and waters, the government today approved implementation of Rs 774-crore Global Positioning System (GPS) aided Geo Augmented Navigation (Gagan) project.
This project involves development of indigenous technology in frontier areas and is expected to yield a number of benefits to the aviation sector.
Apart from enabling aircraft to navigate on a straight path instead of navigating in a zig-zag path over land based stations, it will provide coverage of oceanic areas which is not possible by terrestrial systems. It will increase safety by using three dimensional (3D) approach operations-enabling multiple approach capability, improve airport and airspace access in all weather conditions, enhance reliability and reduce delays.
It will also help airlines’ cause by providing fuel-efficient air corridors and providing CAT-I approaches without ground element support. The Indian Space Research Organisation and the Airports Authority of India (AAI) are developing this system jointly. “With implementation of Gagan, India will become
the fourth country in the world to have a satellite based navigation system,” a spokesperson said.
The civil aviation minister, Mr Praful Patel, said the GAGAN system will be in place by 2011 and it will make flying much safer than at present. He said of the Rs 774 crore estimated expenditure on the project, AAI would spend Rs 580 crore.
The implementation of the Gagan programme is being realised in two phases. The first, Gagan TDS phase (Technology Demonstration System), was completed in August, 2007.

thats good News. is this system defferent from IRNSS or both are same???

 

[nitesh]

thats good News??? is this system defferent from IRNSS or both are same???

IRNSS is a different system, it will be used mainly for military purpose.

 

[nitesh]

Salem College students develop motors and components for ISRO rockets and satellites
12 September 2008

Salem: For the first time in the country, two special brushless motors, which form an important part of the Geo-stationary Satellite Launch Vehicle (GSLV), India's largest space launch vehicle and in controlling satellite panels, have been developed by students of a local engineering college here.

These motors were earlier imported by the Indian Space Research Organisation (ISRO).

A prototype of this motor was displayed by students of Sona College of Technology to ISRO scientists at the Vikram Sarabhai Space Centre (VVSC) and ISRO's inertial systems unit (IISU) at Thiruvanthapuram.

The first motor, which will be placed in the rocket nozzle of the GSLV to control its direction, is a 32 newton metre, 1000 rotations per minute quadruplex brushless DC torque motor, according to Prof Kannan, director of Sona Special Power Electronics and Electric Drives (SSPEED).

The second motor, which controls the rotation of the panels in a satellite, is a 2 newton metre, 50 rotations per minute slotless brushless DC motor. It will be used in the scan mechanism of microwave analysis detection of rain and atmospheric structures for the Megha Tropiques Spacecraft.

ISRO's inertial systems unit needed 'cog free' motors to enhance the performance of precision scanning mechanisms in spacecraft and SSPEED had met all the required parameters, Prof Kannan said.

Prof Kannan said this was a "unique" achievement by an institution, which designed and developed an aerospace quality component for actual use in ISRO's satellites and rockets. "This would save precious foreign exchange and provide valuable technical know how," he said.

domain-b.com : Salem College students develop motors and components for ISRO rockets and satellites

 

[Contrarian]

IRNSS is a different system, it will be used mainly for military purpose.

No, it will be our equivalent to the NAVSTAR GPS. Its our own GPS which would cover Indian subcontinent and our regions of interest. It would be used by everyone like in aviation, etc. But we would have our own military grade signals for use by the Armed Forces.

Also we have the GAGAN project going on, which improves the accuracy for all GPS signals. Its first phase is already done and tenders are on for the second phase. Raytheon won the bid for the first phase and is the lead contender for the second phase as well. GAGAN when completed would augment the accuracy of IRNS, NAVSTAR GPS, and GLONASS.

I believe we are the third/fourth country in the world to have a GPS enhancing system(considering that EU implemented it as a whole).

 

[nitesh]

But isn't IRNSS is supposed to take signals also from GLONASS. So creating redundancy for the satellites in our immediate area of interest.

 

[Contrarian]

IRNS is not supposed to take signals from GLONASS. It creates GPS signals just LIKE GLONASS, but limited to South Asia and parts of Middle East-Indian area of interest and action.

We already have access to mil grade signals from GLONASS. India is a partner in the GLONASS constellation. India will launch a couple of the GLONASS satellites.

GAGAN, takes signals from GLONASS/NAVSTAR/IRNS and increases their accuracy by a good amount.

 

[nitesh]

Thanks for clearing it, but again it is just creating redundancy in terms of signal acceptable. In case if any body hits IRNSS signals, GLONASS is working. If some body hits GLONASS then it is dragging russia in to war.

 

[nitesh]

The Hindu : National : Chandrayaan-1 on course for launch

Chandrayaan-1 on course for launch

T.S. Subramanian
Passes battery of tests in Space Simulation Chamber

BANGALORE: The sticker on the threshold just says, “Spacecraft checkout No.4.” As we entered the mezzanine-like floor on Monday and looked below, the gorgeous looking Chandrayaan-1, enveloped in golden yellow insulation foil, came into view.

It was in the dirt-free “clean room” of the ISRO Satellite Centre (ISAC), Bangalore, and men dressed in white overalls, were fussing over it and conducting checks. It had passed a battery of tests in the space simulation chamber (SSC), where it was subjected to extremes of hot and cold temperatures.

Tests that unfolded its solar panel, as if were an accordion, and for pointing its antenna were equally successful. It will now face vibration and noise tests. Things are moving ahead for the launch of Chandrayaan-1, India’s first spacecraft to the moon, before the end of October from Sriharikota by a Polar Satellite Launch Vehicle called PSLV-XL.

Chandrayaan-1 will carry 11 instruments, five from India and six from abroad. They will map the minerals and chemicals on the lunar soil and also provide clues to the moon’s origin.

ISAC Director T.K. Alex called it “a complicated mission” because “for the first time, we are sending a spacecraft beyond the earth’s orbit” (that is, it will orbit the moon). The moon is nearly four lakh km away and the spacecraft has to be manoeuvred precisely in stages to reach the moon’s orbit.

After all the 11 instruments were successfully integrated into Chandrayaan-1, it underwent thermo-vacuum tests in the special facility SSC. The spacecraft was subjected to 120 degrees Celsius and minus 150 degrees Celsius in the chamber. “It was tested in varying temperatures for almost 20 days. The performance of the spacecraft and its instruments were thoroughly checked and we found that they were all working well,” said Dr. Alex.

M. Annadurai, Project Director, Chandrayaan-1, asserted that there were “no issues’ when the spacecraft went through thermo-vacuum tests, including “soak and shock tests.” During the “soak” tests, it was subjected to high temperatures for long durations. In “shock” tests, it alternately went through high and very low temperatures in quick succession. “During these tests also, we found that there was no issue and all the systems were working well,” Mr. Annadurai said.

He called the SSC a big contraption that “looks like a well.” It is four metres in diameter and seven metres in depth. It has a big lid.

Chandrayaan-1 is now getting ready for the vibration and acoustic tests from September 20. It will be placed on a shake-table. Mr. Annadurai said: “We will generate the vibrations that the spacecraft will undergo when it is launched by the PSLV. Then we move on to the acoustic chamber, where we generate noise similar to that made by the PSLV engines. The spacecraft has to withstand that also.”

While an aircraft engine produced 145 decibels of noise, the PSLV engines produced 150 decibels, Dr. Alex explained. “We are on course for transporting Chandrayaan-1 to Sriharikota by the end of this month (September),” Mr. Annadurai said.

 

[Marshal]

http://www.isro.org/chandrayaan-1/announcement_1.htm
NDTV.com: Countdown to India's moon mission begins
Pallava Bagla
Wednesday, September 17, 2008, (Sriharikota)

Wrapped in a golden foil are India's space dreams, waiting to take off. Chandrayaan, that literally means a vehicle to the Moon is s a first for India. Engineers from the ISRO are busy giving final touches to the satellite that is carrying scientific instruments from India and abroad to map the moon resources like never before.

NDTV was given very rare access to the high tech clean room where the satellite awaits launch.

M. Annadurai, Project Director, Chandrayaan-1, says: "The spacecraft is fully ready, integragetd, tested and the fully dressed up baby. The Chandrayyan is raring to go all the way to the Moon for exploration and the whole team is fully charged, anxious, a bit nervous. And weather Gods permitting, we will be able to put the space craft around the Moon at the end of October."

Chandrayaan-1 is an unmanned satellite that will be launched using India's tried and tested rocket the polar satellite launch vehicle, or PSLV.

The journey to Moon will take 5 and half days. In its two-year life, the satellite will also search for water on the Moon.

While also attempting to place the Tricolour on the surface of the Moon that would bring India into a league of its own.

A few more tests, and Chandrayaan-1 will begin its lunar journey.

The launch of Chandrayaan will hail India's arrival as an important regional power with big dreams since missions to study Mars, and the Sun are already planned ISRO then hopes at putting an Indian in space on an Indian rocket very soon.

 

[Marshal]

 

[nitesh]

marshal, please put it in the Indian space capabilities thread na.

 

[Marshal]

marshal, please put it in the Indian space capabilities thread na.

Sorry..........!!!

 

[nitesh]

mods merge the the threads please

 

[Neo]

Done!