ISRO GSLV-F08/GSAT-6A Mission: March29, 2018

[Śakra]

Do look into how many satellites ISRO currently has in orbit.
And how many foreign $$ ISRO has earned by launching satellites for foreign coustomers.
All this was done while SUPARCO was busy launching water rockets for kids for the past 55 years.

Could be research into a new form of rocket propulsion? I know they had groundbreaking research developing a car that ran on water @Water Car Engineer can tell you more.

 

[sinait]

Do look into how many satellites ISRO currently has in orbit.
And how many foreign $$ ISRO has earned by launching satellites for foreign coustomers.
All this was done while SUPARCO was busy launching water rockets for kids for the past 55 years.

Funny how Gangadesh is reduced to comparing with their smaller neighbors to boost their self worth and ego.
.

 

[boxer_B]

Very frustrated. Satellites should have failover and independent processors running OS independently. Moreover there should be multiple bands and login ports for accessing sat, that's inband and out of band comm.

 

[ni8mare]

Funny how Gangadesh is reduced to comparing with their smaller neighbors to boost their self worth and ego.
.

Funny how Pakdesh is reduced to hiding behind different flag just to bash its neighbors to boost their self worth and ego.

 

[sinait]

Funny how Pakdesh is reduced to hiding behind different flag just to bash its neighbors to boost their self worth and ego.

Does it matter to the topic on hand?
Is that all a population of 1.2 billion can do?
Keep touting their superiority over their much smaller neighbors.
If you are referring to China, that should be a fair target to compare.
Nobody needs to hide, compare to China if you want, not much smaller nations only 1/7 your size.
Only the insecure and lack of self esteem would do that, i.e INCREDIBLY PATHETIC INDIA.
.

 

[KapitaanAli]

Preliminary data shows chances of recovery of GSAT-6A: ISRO

 

[noksss]

Funny how Gangadesh is reduced to comparing with their smaller neighbors to boost their self worth and ego.
.

Big neighbor for you

https://www.indiatoday.in/india/story/india-mars-orbiter-mission-mangalyan-china-300640-2014-09-24

 

[MimophantSlayer]

A mini satellite that works is better than a heavy junk that stops working within 48 hr from launch.

Works better how?
Can it monitor the subcontinent 24*7*365, can it give you telecommunications access, does it be have legitimate military applications?
We all get it, you are here to nut off on schadenfreude but do choose your battles carefully, as pakistan is more or less a nothing in space tech.

Lol, maybe launch as many satellites as we do then boast about china made pak named sats.

Every space agency fails once in a while, a space organisation that was created before ISRO and doesn't have 1/100th of its capabilities is no where near ISRO.
You are delusional if you think that is a worthy enough diss.

 

[sinait]

Big neighbor for you

https://www.indiatoday.in/india/story/india-mars-orbiter-mission-mangalyan-china-300640-2014-09-24

China lauds India's Mars mission as 'pride of Asia'

That should be the way.
Asian nations cooperating to shed the ignominy of lagging the Western powers who got their riches exploiting Asia.

I agree Mars mission is an achievement to be proud of for India and Asians.
But there is a long way to go as India had depended on the US for deep space navigation.
India is also lacking in satellite technology.
India space program is possible only because of external support.

https://thewire.in/science/atomic-clock-rubidium-irnss
Three Atomic Clocks Have Failed Onboard India's 'Regional GPS' Constellation

http://indianexpress.com/article/te...clocks-in-space-worry-for-indias-gps-4721918/
The failure of seven of the 21 clocks in the constellation has, however, raised concerns. “Six of the seven satellites are still working,” said a senior ISRO official associated with the programme. “There are, however, inherent hardware problems on the rubidium atomic clocks in some of these.

Indians must learn to moderate their overly enthusiasm.
.

 

[Hindustani78]

http://www.thehindu.com/sci-tech/science/gsat-6a-still-eludes-isro/article23417662.ece?homepage=true
Contact yet to be re-established with the delinked communication satellite
Contact is still to be re-established with the delinked communication satellite GSAT-6A, according to an ISRO official.

Engineers at the ISRO Master Control Facility at Hassan continued to try to hook up with it on Monday. “We must wait for Tuesday when it is expected to fly over India,” the official said.

Apparently, the best efforts to reach Indian satellites can be made from the two inland MCFs — at Hassan and Bhopal — although ISRO has a handful of ground stations across the world to track its satellites.

Team set up

A team led by former director of ISRO Satellite Centre P.S. Goel is to look into the latest anomaly and how to address it in future missions.

GSAT-6A was sent to space on March 29 on ISRO’s GSLV rocket. However it stopped sending signals soon after the second routine orbit raising exercise was performed on March 31.

It had then reached an orbit of around 36,000 km x 20,000 km and would be circling Earth every 18-20 hours.

ISRO Chairman K. Sivan said on Sunday that his team was not yet giving up on the satellite, said to be important for strategic communications in remote areas and for the armed forces. “We hope to recover the satellite and will keep on trying to contact it,” he had said.

If they cannot do so, the satellite will continue to go around Earth idly until it loses height and comes down one day.

 

[KapitaanAli]

After ‘cardiac arrest’, Rs 270 crore Gsat-6A cruising on silently
Chethan Kumar and Srinivas Laxman | TNN | Updated: Apr 3, 2018, 19:17 IST

TNN
HIGHLIGHTS

• Isro said efforts were on to resume communication with the satellite.
• Sources said there was no indication of any system malfunction or fluctuations during or after launch.
• The Gsat-6A was to help the armed forces communicate from remote border areas and the mountains.

MUMBAI/BENGALURU: The Gsat-6A remained incommunicado for the third day after its launch even as it moved over Africa and then towards the southern tip of India, Singapore, Papua New Guinea and over the Pacific Ocean on Monday.

Data from the US-Canadian North American Aerospace Defense Command (Norad) showed all three stages of placing it in orbit had gone off without a hitch.

READ ALSO:

• Isro confirms losing contact with communication satellite GSAT-6A

“It was like a cardiac arrest,” one Isroinsider said about the sudden blackout of the Rs 270-crore satellite.



Read also: India vs China — How space plans are matching up

Isro said efforts were on to resume communication with the satellite. Sources said there was no indication of any system malfunction or fluctuations during or after launch. “Every time there is a discrepancy, there are indications. This time, it could not been seen or felt, which is why it is taking more time to establish contact,” Isro chairman K Sivan said.

The Gsat-6A was to help the armed forces communicate from remote border areas and the mountains.

Private real-time satellite tracking websites have also been tailing the Gsat-6A job since its launch. One of them, n2yo.com, showed that around 2.30pm on Monday, the spacecraft was flying at a speed of 3.38km per second at an altitude of 28,517km. By 6pm, its altitude had dropped to 5,140km. An Isro official said the altitude changed because thesatellite was following an elliptical orbit; the speed and altitude will change “every fraction of a second”. It is expected to remain this way till the spacecraft reaches its final geosynchronous home orbit 36,000km above the earth, he added.



Director of the Mumbaibased Akash Ganga Centre for Astronomy, Bharat Adur, said the Norad data showed there was no functional or orbiting problem, as of now. “The problem seems to be in the spacecraft’s application area,” he said.

Information about the satellite can be accessed from another live satellite tracking network, Calsky, which is providing various parameters and updating them constantly. So far, none of this data has signalled what might have caused the communication blackout.

Sources said if the satellite does come back on track, it would have enough fuel to make progress. Encouragingly, the last communication with the satellite indicated good health of all systems.

Power system
The spacecraft, just like its predecessor Gsat-6, is equipped with a power system of onboard solar panels that could generate more than 3,000 watts, and a back-up of 100 Ah Li-Ion batteries to be used during probable eclipses. Isro has not been able to say whether the existing power back-ups failed to act and if an additional redundancy system for power was needed.

 

[Hindustani78]

Reached an orbit of around 36,000 km x 20,000 km and would be circling Earth every 18-20 hours.

ISRO Master Control Facility at Hassan

The best efforts to reach Indian satellites can be made from the two inland MCFs — at Hassan and Bhopal.

ISRO has a handful of ground stations across the world to track its satellites.

Seems contact was not established with some Ground Stations within India and the strategic communications in remote areas for the armed forces aboard are fully connected .

 

[SOHEIL]

Good to see you my friend, hope you are doing well....annoying same ole ppl by hitting the .... you know what spot

A ...

I'm a little busy with life

 

[KapitaanAli]

We now knows exact location of GSAT-6A communication satellite, says Isro chief

Surendra Singh| PTI | Updated: Apr 10, 2018, 22:10 IST


HIGHLIGHTS

• We now know the exact position of the satellite and keeping a close watch on its movement, said Isro chief
• One of our teams is busy restoring the link with GSAT-6A, he added

GSAT-6A blasts off from the Satish Dhawan Space Centre in Sriharikota
NEW DELHI: Indian Space Research Organisation (Isro) now knows the exact location of communication satellite GSAT-6A with which the signal link got snapped soon after its launch from Sriharikota on March 29.

Talking to TOI, Isro chairman Dr K Sivan said, “With the help of the satellite tracking system and other sources, we now know the exact location of GSAT-6A. Earlier, we were searching in the dark. But now we know the exact position of the satellite and keeping a close watch on its movement round-the-clock.

We are hopeful that at a particular orientation, it will capture the signal from the ground station and communication will be restored. Currently, GSAT-6A is moving in the geo transfer orbit at perigee of around 26,000km and apogee of about 33,000km.”

On the power front, Dr Sivan said, “We expect that the satellite has the power as its solar panels are fully deployed and getting recharged.” He said, “Currently, two teams are working simultaneously in Isro. One is busy restoring the link with GSAT-6A and the other in preparation of the launch of navigation satellite IRNSS-1I on Thursday.” IRNSS-1I, the eighth satellite to join the constellation of navigation satellites, will be launched at 4.04am on Thursday from Sriharikota by PSLV-C41 and the countdown will start from Tuesday night.

On addition of any new safety mechanism in IRNSS-1I to avoid power failure, the chairman said, “Power systems used in GSAT-6A and IRNSS-1I are totally different. The power system being used in IRNSS-1I is very simple and proven as all seven navigation satellites launched earlier are working successfully.”



IRNSS-1I is being launched to replace first navigation satellite IRNSS-1A, whose three Rubidium atomic clocks (meant to measure precise locatioal data) had stopped working two years ago. The launch of the first replacement satellite IRNSS-1H on August 31 last year was a failure as the satellite got stuck in the heat shield soon after its launch.




To avoid the heat shield glitch again, Dr Sivan said, “The glitch in the heat shield opening has been sorted out. The successful launch of Cartosat-2 series satellite in January this year and GSAT-6A on March 29 showed the improved system for the heat shield opening mechanism is working fine.”


On upcoming launches this year, the Isro chairman said, “Before the Chandrayaan-2 launch in the first week of October, we will launch three to four launches. After IRNSS-1H launch on Thursday, we will be busy in the launch of heaviest satellite GSAT-11 weighing over 5 tonne from the Guiana space centre. Thereafter, we will launch GSLV Mk III D2 (Isro’s ‘fat boy’). We are targeting to launch nine satellites after IRNSS-1I launch on Thursday. Almost, one launch every month.”




Isro has been increasing its frequency of launches in recent years in order to meet the national requirement of satellites in the areas of communication, earth observation and navigation.

 

[Hindustani78]

http://www.thehindu.com/news/nation...ocate-gsat-6a-tirunelveli/article23550133.ece
April 15, 2018 22:18 IST
Updated: April 15, 2018 22:18 IST

We may establish contact with it soon, says ISRO chairman
TIRUNELVELI

Asserting that Indian Space Research Organisation (ISRO) scientists have located GSAT - 6A with which the ground stations lost control 24 hours after it was launched into the orbit on March 29, ISRO Chairman K. Sivan has hoped that contact with the satellite would be re-established soon.

Dr. Sivan told this to reporters at Palayamkottai on Sunday during an informal chat after laying foundation stone for the ₹83-crore satellite data receiving station on a land owned by INS Kattabomman opposite Government College of Engineering.

The ISRO Chairman said contacts with the satellites would usually get disconnected for a few minutes due to radiation or electromagnetic disturbances and re-established when the launch vehicles’ engines would be fired three or four times to take the satellite to the pre-determined path.

As GSAT – 6A, meant for military communications, had been located, the ground stations would re-establish the link with the satellite soon, Dr. Sivan said.

He also said ISRO was working on launching GSAT – 29 with GSLC Mk III D-2 into the predetermined orbit. This would ensure faster data communication and downloading.

On Chandrayan II, he said ISRO’s next mission, which was progressing well, would be taken up in October on a full moon day. Under this project, ISRO was planning to land a robot in moon. “A lot of tests are going on to make this mission a grand success and the tests are yielding encouraging results,” he said.

On strengthening ISRO’s ties with educational institutions, he said there were plans to share microchips with satellite data with educational institutions so that students could develop their own innovative projects for specific needs.

Though ISRO had established its signal receiving stations across the country, the upcoming major station in the south, which would be completed within a year, would come in handy for ISRO to receive quality signals even as the satellite was moving from the south to the north. “The forthcoming station will create employment opportunities for a good number of people,” Dr. Sivan observed.