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).

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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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News Network
December 6,2025

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With IndiGo flight disruptions impacting thousands of passengers, the airline on Saturday said that it will offer full waiver on all cancellations/reschedule requests for travel bookings between December 5, 2025 and December 15, 2025.

Earlier in the day, the civil aviation ministry had directed the airline to complete the ticket refund process for the cancelled flights by Sunday evening, as well as ensure baggage separated from the travellers are delivered in the next two days.

In a post on X, titled 'No questions asked', IndiGo wrote, "In response to recent events, all refunds for your cancellations will be processed automatically to your original mode of payment."

"We are deeply sorry for the hardships caused," it further added.

Several passengers, however, complained of not getting full refund as promised by the airline.

Netizens have shared screenchots of getting charged for airline cancellation fee and convenience fee.

"Please tell me why u have did this airline cancellation charges when u say full amount will be refunded (sic)," a user wrote sharing a screenshot of the refund page.

"Well, but you have still debited the convenience charges," wrote another.

Passengers have also raised concerns about the "cancel" option being disabled on the IndiGo app. "First enable the 'Cancel' button on your App & offer full refund on tickets cancelled by customers between the said dates," wrote a user.

A day after the country's largest airline, IndiGo, cancelled more than 1,000 flights and caused disruptions for the fifth day on Saturday, the ministry said that any delay or non-compliance in refund processing will invite immediate regulatory action.

The refund process for all cancelled or disrupted flights must be completed by 8 pm on Sunday, the ministry said in a statement.

"Airlines have also been instructed not to levy any rescheduling charges for passengers whose travel plans were affected by cancellations," it said.

On Saturday, more than 400 flights were cancelled at various airports.

IndiGo has also been instructed to set up dedicated passenger support and refund facilitation cells.

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News Network
December 16,2025

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Prime Minister Narendra Modi on Monday held talks with Jordan’s King Abdullah II in Amman, during which the two leaders discussed ways to further strengthen bilateral relations, with the Prime Minister outlining an eight-point vision covering key areas of cooperation.

Describing the meeting as “productive”, PM Modi said he shared a roadmap focused on trade and economy, fertilisers and agriculture, information technology, healthcare, infrastructure, critical and strategic minerals, civil nuclear cooperation, and people-to-people ties.

In a post on social media platform X, the Prime Minister praised King Abdullah II’s personal commitment to advancing India–Jordan relations, particularly as both countries mark the 75th anniversary of the establishment of diplomatic ties this year.

“Held productive discussions with His Majesty King Abdullah II in Amman. His personal commitment towards vibrant India-Jordan relations is noteworthy. This year, we are celebrating the 75th anniversary of our bilateral diplomatic relations,” PM Modi said.

The meeting took place at the Al Husseiniya Palace, where the two leaders also exchanged views on regional and global issues of mutual interest. According to the Ministry of External Affairs (MEA), both sides agreed to further deepen cooperation in areas including trade and investment, defence and security, counter-terrorism and de-radicalisation, fertilisers and agriculture, infrastructure, renewable energy, tourism, and heritage.

The MEA said both leaders reaffirmed their united stand against terrorism.

PM Modi arrived in Amman earlier on Monday and was received by Jordanian Prime Minister Jafar Hassan, who accorded him a formal welcome. Following the talks, King Abdullah II hosted a banquet dinner in honour of the Prime Minister, reflecting the warmth of bilateral ties.

Jordan is the first leg of PM Modi’s three-nation tour. From Amman, the Prime Minister will travel to Ethiopia at the invitation of Prime Minister Abiy Ahmed Ali, marking his first official visit to the African nation. The tour will conclude with a visit to Oman.

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News Network
December 13,2025

New Delhi: School-going children are picking up drug and smoking habits and engaging in consumption of alcohol, with the average age of introduction to such harmful substances found to be around 13 years, suggesting a need for earlier interventions as early as primary school, a multi-city survey by AIIMS-Delhi said.

The findings also showed substance use increased in higher grades, with grade XI/XII students two times more likely to report use of substances when compared with grade VIII students. This emphasised the importance of continued prevention and intervention through middle and high school.

The study led by Dr Anju Dhawan of AIIMS's National Drug Dependence Treatment Centre, published in the National Medical Journal of India this month, looks at adolescent substance use across diverse regions.

The survey included 5,920 students from classes 8, 9, 11 and 12 in urban government, private and rural schools across 10 cities -- Bengaluru, Chandigarh, Delhi, Dibrugarh, Hyderabad, Imphal, Jammu, Lucknow, Mumbai, and Ranchi. The data were collected between May 2018 and June 2019.

The average age of initiation for any substance was 12.9 (2.8) years. It was lowest for inhalants (11.3 years) followed by heroin (12.3 years) and opioid pharmaceuticals (without prescription; 12.5 years).

Overall, 15.1 per cent of participants reported lifetime use, 10.3 per cent reported past year use, and 7.2 per cent reported use in the past month of any substance, the study found.

The most common substances used in the past year, after tobacco (4 per cent) and alcohol (3.8 per cent), were opioids (2.8 per cent), followed by cannabis (2 per cent) and inhalants (1.9 per cent). Use of non-prescribed pharmaceutical opioids was most common among opioid users (90.2 per cent).

On being asked, 'Do you think this substance is easily available for a person of your age' separately for each substance category, nearly half the students (46.3 per cent) endorsed that tobacco products and more than one-third of the students (36.5 per cent) agreed that a person of their age can easily procure alcohol products.

Similarly, for Bhang (21.9 per cent), ganja/charas (16.1 per cent), inhalants (15.2 per cent), sedatives (13.7 per cent), opium and heroin (10 per cent each), the students endorsed that these can be easily procured.

About 95 per cent of the children, irrespective of their grade, agreed with the statement that 'drug use is harmful'.

The rates of substance use (any) among boys were significantly higher than those of girls for substance use (ever), use in the past year and use in the past 30 days. Compared to grade VIII students, grade IX students were more likely, and grade XI/XII students were twice as likely to have used any substance (ever).

The likelihood of past-year use of any substance was also higher for grade IX students and for grade XI/XII students as compared to grade VIII students.

About 40 per cent of students mentioned that they had a family member who used tobacco or alcohol each. The use of cannabis (any product) and opioid (any product) by a family member was reported by 8.2 per cent and 3.9 per cent of students, respectively, while the use of other substances, such as inhalants/sedatives by family was 2-3 per cent, the study found.

A relatively smaller percentage of students reported use of tobacco or alcohol among peers as compared to among family members, while a higher percentage reported inhalants, sedatives, cannabis or opioid use among peers.

Children using substances (past year) compared to non-users reported significantly higher any substance use by their family members and peers.

There were 25.7 per cent students who replied 'yes' to the question 'conflicts/fights often occur in your family'. Most students also replied affirmatively to 'family members are aware of how their time is being spent' and 'damily members are aware of with whom they spend their time'.

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