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.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
July 1,2020

New Delhi, Jul 1: Jet fuel or ATF price on Wednesday was hiked by 7.5 per cent, the third increase in a month, while petrol and diesel rates were unchanged for the second day in a row.

Aviation turbine fuel (ATF) price was hiked by Rs 2,922.94 per kilolitre (kl), or 7.48 per cent, to Rs 41,992.81 per kl in the national capital, according to a price notification by state-owned oil marketing companies.

This is the third straight increase in ATF prices in a month. Rates were hiked by a record 56.6 per cent (Rs 12,126.75 per kl) on June 1, followed by Rs 5,494.5 per kl (16.3 per cent) increase on June 16.

Simultaneously, non-subsidised cooking gas LPG rates were increased by Re 1 to Rs 594 per 14.2-kg cylinder in the national capital. Prices were up by Rs 4 in other metros mostly because of different local sales tax or VAT rate.

On the other hand, petrol and diesel prices were unchanged for the second day in a row.

This, after diesel rates scaled a new high after prices were hiked 22 times in just over three weeks.

In Delhi, a litre of petrol comes for Rs 80.43 per litre, while diesel is priced at Rs 80.53 per litre.

Rates vary from state to state depending on the incidence of local sales tax or VAT.

While the diesel price had been hiked on 22 occasions since June 7, petrol price had been raised on 21 occasions.

The cumulative increase since the oil companies started the cycle on June 7 totals to Rs 9.17 for petrol and Rs 11.14 for diesel.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
May 23,2020

New Delhi, May 23: On the occasion of Jumat-ul-Vida, the last Friday of the ongoing holy month of Ramzan, a select group of people offered namaz at Delhi's Jama Masjid ahead of Eid-ul-Fitr, while adhering to social distancing following relaxations in the fourth phase of the COVID-19 lockdown.

"A large number of people wanted to offer prayers today but we told them they should do so from their homes. Only the staff of the mosque and a few members of the family offered prayers here," Shahi Imam of Jama Masjid said.

The coronavirus pandemic has also marred the excitement of Eid for the vegetable and fruit vendors in neighbouring Daryaganj.

The fourth phase of nation-wide lockdown extended till May 31, began from Monday in which markets and shops were allowed to open. However, due to persisting fear of COVID-19, the sale of products is yet to pick pace.

Unlike each year, the market lacks the sheen this Eid with no bustle and people cautious about venturing out.

Salim, who has been selling cheese and curd in the market for the last 35 years, told ANI, "I have never seen such an Eid. There is an atmosphere of fear in the minds of people."

Another fruit seller Haseen Malik said that "During the month of Ramadan, most people relish fruits such as musk melon, sweet lemon and watermelon so there is some demand for it. But there is no excitement for Eid this year. The sale has been at an all-time low because of the lockdown."

In the wake of the festival and to ensure social distancing, Delhi Police has made elaborate security arrangements. 

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
June 29,2020

New Delhi, Jun 29: Delhi Chief Minister Arvind Kejriwal on Monday paid tribute to the senior doctor of city government-run LNJP Hospital who died battling COVID-19, saying the society has "lost a very valuable fighter".

The 52-year-old doctor served in the front line of the war against the pandemic at the government facility, and died of novel coronavirus infection in an ICU of a private hospital on Sunday.

"Dr Aseem Gupta, a senior doctor of LNJP Hospital succumbed to Covid yday. He was known for going out of his way to serve his patients. We have lost a very valuable fighter. Delhi salutes his spirit and sacrifice...," Kejriwal tweeted.

The chief minister also said in his tweet that he has spoken to Dr Gupta''s wife and "offered my condolences and support".

LNJP Hospital is a dedicated COVID-19 facility under the Delhi government. It recently completed 100 days of being declared a coronavirus facility.

"LNJP Hospital has displayed great fortitude in the face of acute challenges. It''s recovery rate is going up, death rate is reducing, ICU capacity is being ramped up - the hospital is saving so many lives," the chief minister said.

A condolence meeting to pay respect to Dr Gupta has been scheduled at 1 pm in the office of the Medical Director of the hospital, a senior official said.

The doctor, a consultant anaesthesiologist died at the Max hospital, Saket in south Delhi, a private dedicated COVID-19 facility.

"He was a front line anaesthesia specialist who contracted COVID-19 infection while on duty. He tested positive on June 6, when he had mild symptoms and was shifted to a quarantine facility. His symptoms aggravated on June 7 and he was admitted in the Intensive Care Unit of the LNJP Hospital," the LNJP Hospital said in a statement on Sunday.

He was shifted to Max Hospital, Saket on June 8 on his request, it said.

The doctor was battling the disease for the last two weeks at Max Hospital, where he succumbed to the illness on Sunday, the statement said.

He was Specialist, Grade I, in the Department of Anaesthesia at the LNJP Hospital, the statement said.

Several hundreds of healthcare workers have been infected with COVID-19 till date in Delhi.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.