ISRO successfully launches India’s heaviest rocket GSLV Mark-III

December 18, 2014

Sriharikota, Dec 18: India Thursday moved forward in rocket technology with the successful flight testing of its heaviest next generation rocket and the crew module.

firePrecisely at 9.30 a.m., the 630 tonne Geosynchronous Satellite Launch Vehicle-Mark III (GSLV-Mark III) standing 43.43 metre tall freed itself from the second launch pad and with a reverberating deep throated roar, rose into the sky.

With a thick orange flame at its tail, the expendable rocket ascended towards the heavens with one way ticket as its design life span is just around five minutes.

The Rs.155 crore mission has twin purposes. The main purpose is to test the rocket's atmospheric flight stability with around four tonne luggage.

The second and incidental objective is to study the re-entry characteristics of the crew module-called Crew Module Atmospheric Re-entry Experiment - its aero braking and validation of its end-to-end parachute system.

According to an Indian Space Research Organisation (ISRO) official, it will be of the size of a small bedroom and can accommodate two to three people. Just over five minutes into the flight, the rocket spat out the giant cup cake shaped 3.7-tonne crew module at an altitude of 126 km.

The crew module then descended towards Earth at a high speed. The speed was moderated remotely manipulating its on-board motors till 80 km above the earth.

From here the ballistic re-entry into the atmosphere began while the on-board thrusters were shut down. The crew module's heat shield was expected to experience a heat of around 1,600 degrees centigrade.

At an altitude of around 15 km, the module's apex cover separated and the parachutes were deployed.

The module soft crashed in Bay of Bengal near Andaman and Nicobar Islands.

From here, the crew modules multi-modal and multi-state transport journey would begin.

A naval ship tracking the signals from the module will pick up the module and deliver it at the Ennore Port near Chennai in Tamil Nadu. From there it will be brought to Sriharikota in Andhra Pradesh and then it will be taken to the Vikram Sarabhai Space Centre, Thiruvanthapuram in Kerala.

At the mission control centre there was no control on ISRO's scientists happiness at the success.

Speaking about the mission, ISRO's Chairman K. Radhakrishan said: "India started development of the rocket a decade ago and today completed the first experimental flight.

"The performance of the solid and the liquid engines were as expected," he said. "The unmanned crew module splashed in Bay of Bengal as expected," he added.

S. Somanath, project director of GSLV Mark III, said: "India now has a new launch vehicle. The payload capability of the Indian rocket has been enhanced significantly."

The Thursday mission success is sweet for the Indian space fraternity as it comes after successful launch of Mars Orbiter last year and older version of GSLV rocket powered by its own cryogenic engine early this year.

A cryogenic engine is more efficient as it provides more thrust for every kilogram of propellant burnt.

This was the second mission of GSLV rocket during the last four years after two such rockets failed in 2010. The GSLV-Mark III is designed to be a three stage/engine rocket with a lift off weight of 630 tonnes.

The first stage comprises two identical S-200 large solid boosters with 200 tonne solid propellant, that are strapped on to the second stage, the L110 re-startable liquid stage.

The third stage/engine is the cryogenic. For the country ISRO perfecting the cryogenic engine technology is crucial as precious foreign exchange can be saved by launching communication satellites by itself.

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Agencies
July 24,2020

Lucknow, Jul 24: The Congress in Uttar Pradesh on Friday protested against what it dubbed as deliberate and systematic deletions of chapters dealing in freedom struggle and the party's role in it from the syllabi of Classes 10 and 12 of the Secondary Education Board.

Congress leader Anugrah Narain Singh said: "The deletions effected in Class 12 syllabus clearly has political overtones. Chapters dealing with the freedom movement and the Congress role in it have been cut out. The BJP has no role of its own in the country's history and, therefore, wants that the new generations should not learn about the Congress contribution as well."

A Congress delegation submitted a memorandum to UP Eduction Board Secretary Divya Kant Shukla to demand restoration of the deleted chapters and topics.

BJP MP Rita Bahuguna Joshi accused the opposition Congress of "turning every occasion into a political opportunity during the pandemic".

"The Congress is unnecessarily making an issue out of this. Only some portions have been deleted from the syllabi due to shortening of the academic session due to the nationwide lockdown. People already know about the Congress and the cut in the syllabi is only temporary. The Congress is unnecessarily trying to create a political controversy," she said.

Prof Yogeshwar Tiwari of the History Department in the Allahabad University dubbed the changes made in the syllabi as "unfortunate". "The history is not of the Congress alone -- it is the history of the nation and every student must know about it," he said.

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News Network
May 21,2020

New Delhi, May 21: As many as 5,609 new COVID-19 cases were reported in India in the last 24 hours, taking the total number of cases in the country to 1,12,359 according to the Union Ministry of Health and Family Welfare.

Out of the total cases, 63,624 are active cases, 45,300 patients have been cured/discharged or have migrated and 3,435 deaths have been reported.

With 39,297 cases in total, Maharashtra remains the worst affected state in the country, followed by Tamil Nadu (13,191 cases), Gujarat (12,537 cases), and Delhi (11,088 cases).

The nationwide lockdown imposed as a precautionary measure to contain the spread of coronavirus has been extended till May 31.

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News Network
May 15,2020

New Delhi, May 15: A group of doctors from the AIIMS, Raipur has recommended restrictions on the use of mobile phones in healthcare institutions amid the COVID-19 pandemic, warning that such devices can be a potential carrier of the virus and lead to infection among healthcare workers.

In a commentary published in the BMJ Global Health journal, the doctors stated that mobile phone surfaces are a peculiar 'high-risk' surface, which can directly come in contact with the face or mouth, even if hands are properly washed and one study indicates that some healthcare workers use phones every 15 minutes to two hours.

Though there have been many significant guidelines from various health organisations like the WHO and CDC focusing on prevention and control of disease, the commentary highlighted "there is no mention of or focus on mobile phones in these guidelines, including the WHO infection control and prevention guidelines, which recommends the use of handwashing".

In healthcare facilities, phones are used to communicate with other health care workers, look up recent medical guidelines, research drug interactions, understand adverse events and side effects, conduct telemedicine appointments and track patients among others, stated the document.

The document has been authored by Dr Vineet Kumar Pathak, Dr Sunil Kumar Panigrahi, Dr M Mohan Kumar, Dr Utsav Raj and Dr Karpaga Priya P from the Department of Community and Family Medicine.

"In their tendency to come in direct contact with the face, nose or eyes in healthcare settings, mobile phones are perhaps second only to masks, caps or goggles," the authors said.

"However, they are neither disposable nor washable like these other three, thus warranting disinfection. Mobile phones can effectively negate hand hygiene... There is growing evidence that mobile phones are a potential vector for pathogenic organisms," they said.

It is the need of the hour to address proper hygienic use of mobile phones in healthcare settings. In a study in India, almost 100 per cent of health workers of a tertiary care hospital used mobile phones in the hospital, but only 10 per cent of them had at any time wiped their mobile phones clean, the commentary published on April 22 said.

"The safest thing to do is to consider your phone as an extension of your hand, so remember you are transferring whatever is on your phone to your hand," Dr Pathak said.

Amidst the ongoing pandemic, two biggest mobile phone companies have uploaded their user support guidelines, saying that 70 pc isopropyl alcohol or Clorox Disinfecting Wipes can be used to gently wipe the exterior surface of phones in switched-off mode.

However, in doing so, the use of bleach or entry of moisture through any of the openings must be avoided, and any harsh chemical may damage the oleophobic screen, leading to damage in the touch screen sensitivity of the phone, the article stated.

Mobile phones are one of the most highly touched surfaces according to the Centers for Disease Control and Prevention (CDC), along with counters, tabletops, doorknobs, bathroom fixtures, toilets, keyboards, tablets and bedside tables.

The doctors recommended restriction on mobile phone usage in healthcare settings like hospital wards, ICUs and operation theatres, while advocating the use of headphones to prevent contact with the face while talking.

There should be no sharing of mobile phones, headphones or headsets of any kind. In addition, where available, the use of interdepartmental intercom facility may be promoted.

"Although hand hygiene and mobile phone use by a person are not mutually exclusive, it is high time to acknowledge the potential role of mobile phones in disease transmission cascade and to take evidence-based appropriate actions. This is especially important, given the ongoing COVID-19 pandemic," the authors said.

They said it is necessary for government agencies and the WHO to generate public awareness and to formulate suitable information, education and communication material on mobile phone hygiene, especially in healthcare settings.

AIIMS, New Delhi, Resident Doctors' Association (RDA) General Secretary, Dr Srinivas Rajkumar T said even outside health care settings, people should pay special attention to the usage of mobile phones as they carry them to all places.

"Phone and computer peripherals like keyboard, mouse, etc. should be covered with transparent plastic covers which can be cleaned without interfering with their function. Cleaning hands by soap or alcohol-based hand sanitizer before and after contact with phone and between contact with other surfaces can decrease the risk of potential transmission.

"Using a handsfree headset, dedicated operator/assistant per ward handling the communication via common line in hospitals while on duty can enable communication without compromising safety," Dr Srinivas said.

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