India successfully launches communication satellite in textbook style

August 27, 2015

Sriharikota (Andhra Pradesh), Aug 27: India successfully launched its communication satellite GSAT-6, which has several strategic applications, in textbook style on Thursday using its heavy rocket geosynchronous satellite launch vehicle (GSLV-D6).gslv6

The GSLV rocket, with a cryogenic engine, slung the satellite in a geosynchronous transfer orbit (GTO) from where it would be taken up to its final geostationary orbit.

The successful flight of GSLV rocket gives the Indian space programme a much-needed booster as getting the more-efficient cryogenic engine (which provides more thrust for every kilogram of propellant burnt) right is important for its future space programmes.

Indian space scientists have spent around two decades in conceiving the cryogenic technology and spent around Rs.400 crore in developing it.

Precisely at 4.52 p.m., the Geosynchronous Satellite Launch Vehicle-Development 5 (GSLV D6) rose from the second launch pad here at Satish Dhawan Space Centre.

The 49.1 metre tall rocket weighing 416 tonnes slung the 2,117 kg GSAT-6 communication satellite in the geosynchronous transfer orbit (GTO) around 17 minutes into the flight.

As the whole mission concluded successfully, ISRO scientists at the mission control centre were visibly happy, back-slapping and hugging each other once the rocket ejected the GSAT-6 satellite into the intended orbit.

Speaking about the launch, ISRO chairman A.S.Kiran Kumar said: "Today's performance of launch vehicle was normal. The intricacies of cryogenic engine has been understood."

This is the first successful GSLV rocket launch that placed a satellite in orbit in Kiran Kumar's tenure.

The Indian space agency flew the GSLV rocket with its own cryogenic engine for the second time on Thursday after the successful launch of a similar rocket in January 2014 that put into orbit GSAT-14.

This was the second mission of GSLV during the last five years after two such rockets failed in 2010.

One of the GSLV rockets flew with Indian cryogenic engine and the other one with a Russian engine.

The GSLV is a three stage/engine rocket. The core of first stage is fired with solid fuel while the four strap-on motors by liquid fuel. The second is the liquid fuel and the third is the cryogenic engine.

For the country, ISRO's perfection of cryogenic engine technology is crucial as precious foreign exchange can be saved by launching communication satellites by itself.

Currently ISRO flies its heavy communication satellites by European space agency Ariane.

ISRO officials told IANS earlier that the country pays around $85-90 million or around Rs.500 crore as launch fee for sending up a 3.5 tonne communication satellites. The cost of satellite is separate.

The ISRO can send smaller communication satellites - weighing around two tonnes - till such time it gets ready an advanced GSLV variant-GSLV-Mark III- that can lug satellites weighing around four tonnes.

The space agency will be launching satellites like GSAT-7, 9 using a similar rocket.

One of the notable aspect of the successful launch is the rocket's weight lift capacity. The current GSLV rocket that ISRO flies has a carrying capacity of around 2.2 tonnes.

Earlier attempts to carry slightly over two tonne satellite ended in partial/total failures.

The GSAT-6 is India's 25th geostationary communication satellite and twelfth in the GSAT series.

Five of GSAT-6's predecessors were launched by GSLV during 2001, 2003, 2004, 2007 and 2014 respectively.

After its commissioning, GSAT-6 will join the group of India's other operational geostationary satellites.

The satellite provides communication through five spot beams in S-band and a national beam in C-band for strategic users.

One of the advanced features of GSAT-6 satellite is its S-Band Unfurlable Antenna of six metre diameter - the largest satellite antenna realised by ISRO. This antenna is utilised for five spot beams over the Indian mainland, which exploit the frequency reuse scheme to increase frequency spectrum utilisation efficiency.

The satellite's life expectancy is nine years.

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Agencies
May 14,2020

Wayanad, May 14: Coronavirus scare has gripped the police in the district as around 70 personnel, including their chief, have gone on quarantine as a precautionary measure after three colleagues tested positive for the pathogen.

A day after three personnel of Mananthavady police station tested positive for COVID-19, District Superintendent of Police R Illango said on Thursday he and others decided to quarantine themselves as they had been in contact with some other colleagues from the station. Twenty four personnel, including a Deputy Superintendent of Police, have gone on quarantine after giving their samples for testing three days ago as a measure of abundant caution after a man questioned in Manathavady police station in connection with a case tested positive for the virus on May 9.

Of the 24, results of 18 have been received so far and three personnel tested positive on Wednesday, following which the station has been disinfected and virtually closed and contact tracing underway.

On Wednesday, the SP and some other police personnel had interacted with the DySp for close to an hour at a checkpost following which over 40 police personnel have voluntarily decided to go on quarantine.

"We are actually being over cautious. I have spoken to all the policemen. We know we are in the high-risk job. We are concerned that we might spread it to family members, public, or colleagues. So we want to maintain extreme caution", Illango, who is on home quarantine, told PTI.

With the three personnel testing positive in the state, Kerala Director General of Police Loknath Behera said the force should take all necessary precautions and fearlessly go ahead in the fight against the virus.

The three from Manathavady are believed to have contracted the virus after they came in contact with a man who was called to the station in connection with a case on April 28 and May 2. He later tested positive for COVID-19 on May 9. This man is suspected to be a contact of a truck driver, who has turned out to be a super spreader after returning to the district from Chennai's Koyambedu market, a hotspot, and had infected at least 10 others, including his wife, mother and grandchild.

The Mananthavady police station has been disinfected with the help of the Health Department and Fire Force personnel. Computers and wireless equipment have been shifted to other police buildings and the station's charge has been temporarily given to Vallamunda Station House Officer, a release from the DGP's office said. Two police personnel wearing personal protection equipment (PPE) kits would be at the station to take care of necessary work and a health worker posted to help them, it said.

Police personnel from other stations have been mobilised to meet any shortage, Illangosaid adding they need not come to the police station but directly go to the duty points. Meanwhile, the district health authorities said the standard operating procedure (SOP) has been initiated as soon as the test results of the three came by Wednesday noon. Accordingly, all personnel who were on duty were sent to nearby lodges and resorts for quarantine.

One of the policemen who tested positive had been to Sulthan Bathery police station and Muthanga area, where the DySP and few other officials were also present. This is being seen as a lapse on the part of the police department. However, police sources said none had directed the 24 personnel, whose samples were collected on Monday, to go on quarantine or abstain from duty. The health department is trying to map out the contact list of the police personnel to contain further spread from their direct and secondary contacts.

According to police sources, the Sulthan Bathery Circle Inspector, two sub-inspectors and about 18 police personnel of the Mananthavady police station are among those who have been put on quarantine. As part of containment measures, the courts in Sulthan Bathery and Mananthavady have been closed on Thursday, officials said. 

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News Network
June 13,2020

Dehradun, Jun 13: Chief of Army Staff General M M Naravane on Saturday said the country is passing through difficult times and its safety and honour depend on the ability of its young officers as military leaders.

Addressing gentlemen cadets at the Indian Military Academy here as the reviewing officer of a passing out parade, Gen Naravane said they are being commissioned as officers into the army under the most daunting of circumstances and the high standards of their military training will help them overcome the challenges lying in store for them.

The parade saw a total of 423 cadets being commissioned into the army including 333 from the country and 90 from friendly foreign countries.

"These are difficult times for the country. Its safety, honour and respect depend on your abilities as military leaders. You have to live up to the expectations of your countrymen. You have to ensure that whatever you do is for their welfare," he said.

The army chief said there are no good or bad regiments but only good officers.

"Become one with your men. Win their trust and affection and they will win battles for you," Naravane said.          

He asked the gentlemen cadets to throw themselves into their new role as commissioned officers with passion but also be compassionate towards their men.

"When the going gets tough and all seems lost, it is the spirit of your men that helps you win," he said.          

He said the gentlemen cadets who are taking their first step as commissioned officers will have to make decisions in the tactical and operational domain as well as resolve ethical issues and they will have only their conscience to guide them.          

"In such critical moments let the core values enshrined in the preamble of the constitution of India be your guiding light," the Army Chief said.

Asking them to rise above petty considerations of caste, creed and religion, he said the army does not discriminate.

Apart from containing the external threats, you may also have to defang internal forces out to destabilise the country.

He said the precise drill movements of the cadets had convinced him they will do their respective countries proud.

"In the autumn of your careers what will matter is not the position you finally attain but how honourably you have served your nation," he said.              

In a message to the gentlemen cadets' parents, who were not allowed to attend the event due to the coronavirus pandemic, the Army Chief said, "Till yesterday they (gentlemen cadets) were your children but from tomorrow they will be ours."

He promised to be with them through thick and thin.

The parade looked slightly off-colour this time with the enthusiastic crowds of parents and some usual features missing like the showering of the drill square with flower petals by helicopters.

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News Network
May 9,2020

New Delhi, May 9: With 3,320 coronavirus cases and 95 deaths reported in the last 24 hours, India's COVID-19 cases rose to 59,662 on Saturday, informed the Union Ministry of Health and Family Welfare.

The total number of active cases in the country now stands at 39,834 while the number of cured/discharged/migrated stands at 17,847.

The country has reported 1,981 deaths so far, added the Ministry.

Maharashtra has the highest number of cases with 19, 063 followed by Gujarat with 7,402 cases and Delhi with 6,318 cases.

Meanwhile, the country continues to remain in a lockdown slated to end on May 17.

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