Chandrayaan-2: ISRO to simulate varied scenarios to find why Vikram lander failed

Agencies
September 14, 2019

Bengaluru, Sept 14: The Indian space agency will simulate various scenarios, including what it has not done and what it had assumed, to arrive at the probable cause of its moon lander Vikram hitting the lunar surface after veering away from its plotted path and losing communication link with ground stations, a retired senior ISRO official said.

Early on September 7, Vikram, while on its descent to soft land on the Moon's south polar region, apparently lost control and crash-landed there, snapping the communication links.

"The Indian Space Research Organisation (ISRO) has to simulate various things and scenarios with the data on hand. It should also check and simulate what the actions that were not done and the results that they had assumed," the retired official, who preferred to remain anonymous, told IANS.

According to him, ISRO has to see whether any simulation prior to the launch was overlooked or waived any known deviation.

"ISRO should also check out to the extent at which various failure modes were simulated. ISRO has to go into these details. It would take considerable time to arrive at a conclusion," he added.

Space experts had told IANS that normally any data loss from a satellite means it suddenly changed its attitude. The loss of communication link means the target /satellite experienced a large angular rotation.

According to them, the loss of communication link could also be due to wrong input being loaded on to the lander.

In other words, the loss of communication link with Vikram could be due to sudden disturbance - in the form of engine propulsion or wrong data input, experts said.

A former official classified the Chandrayaan-2 mission into four parts: putting the Chandrayaan-2 spacecraft into earth orbit; taking it into the moon orbit; soft landing of the lander Vikram; and rover Pragyan rolling down to carry out scientific experiments.

"Out of the four, the first two were successful and the last two have not happened," he said.

He said ISRO would have got various engineering data from this mission which will be useful for the future course of action.

On July 22, the Rs 978 crore Chandrayaan-2 was launched into the space by India's heavy lift rocket Geosynchronous Satellite Launch Vehicle-Mark III (GSLV Mk III) in a textbook style.

The Chandrayaan-2 spacecraft comprised three segments -- the Orbiter (weighing 2,379 kg, eight payloads), 'Vikram' (1,471 kg, four payloads) and 'Pragyan' (27 kg, two payloads).

After five earth-bound orbit raising activities, Chandrayaan-2 was inserted into the lunar orbit. On September 2, Vikram separated from the orbiter.

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News Network
June 19,2020

New Delhi, Jun 19: Petrol price on Friday was hiked by 56 paise per litre and diesel by 63 paise a litre, taking the cumulative increase in rates to Rs 7.11 and Rs 7.67 per litre respectively in less than two weeks.

Petrol price in Delhi was hiked to Rs 78.37 per litre from Rs 77.81, while diesel rates were increased to Rs 77.06 a litre from Rs 76.43, according to a price notification of state oil marketing companies.

Rates have been increased across the country and vary from state to state depending on the incidence of local sales tax or VAT.

This is the 13th daily increase in rates in a row since oil companies on June 7 restarted revising prices in line with costs, after ending an 82-day hiatus in rate revision.

In 13 hikes, petrol price has gone up by Rs 7.11 per litre and diesel by Rs 7.67 a litre.

The freeze in rates was imposed in mid-March soon after the government hiked excise duty on petrol and diesel to shore up additional finances.

Oil PSUs Indian Oil Corp (IOC), Bharat Petroleum Corp Ltd (BPCL) and Hindustan Petroleum Corp Ltd (HPCL) instead of passing on the excise duty hikes to customers adjusted them against the fall in the retail rates that was warranted because of fall in international oil prices to two decade low.

International oil prices have since rebounded and oil firms are now adjusting retail rates in line with them.

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Agencies
June 28,2020

New Delhi, Jun 28: Home Minister Amit Shah on Sunday targeted former Congress President Rahul Gandhi, saying he was indulging in "shallow-minded" politics and making statements that make Pakistan and China happy when soldiers are fighting a spirited battle.

Shah said the government is ready for a discussion in Parliament about the situation from 1962 (when India-China war took place) and it is sad that a former president of a party making statements, which are being celebrated in Pakistan and China.

The Home Minister's comments came during an interview with ANI when he was asked about Rahul's "Surrender (Prime Minister Narendra) Modi" remarks while criticising the BJP-led government on India-China border row.

Rahul has been consistent in his criticism of the government on the handling of both Covid-19 situation and India-China border row, which escalated into a "violent face-off" earlier this month in which 20 Indian soldiers were killed.

"Let there be a robust debate in Parliament. Let us have one. Let us discuss from 1962. Nobody is scared of debate. But one should not make a statement that makes Pakistan and China happy when the soldiers are fighting a spirited battle and the government is taking strong steps," he said.

Asked whether India can handle the anti-India propaganda unleashed by Rahul's 'Surrender Modi' hashtag, he said the government is capable of handling it but it is a matter of introspection for the former Congress president and his party that their remarks are being used against the country.

Modi's remarks at an all-party meeting that no one has intruded into Indian territory triggered a controversy with a section arguing that it went against the previous statement of External Affairs Minister S Jaishankar.

Claiming that he could not advise Rahul as it is Congress' job to do so, he said the government has fought Covid-19 well but some people have a twisted way of seeing things. He said India fought well against Covid-19 and the statistics will speak for itself as it is much better compared to the world.

Shah said under Modi's leadership, India is going to win both the battles -- Covid-19 and India-China border row.

The Home Minister also refused to be drawn into a question on whether Chinese soldiers are holding on to Indian territory on the border at present, saying the government is doing enough to address border row with China.

"I don't want to do anything that goes against my primary aim of this interview (to highlight the steps taken to fight Covid-19 pandemic in Delhi) and create headlines that keep citizens further in fear," Shah said.

When pointed out that people are also in panic due to the border situation, he said the government has taken steps to address the situation and at an appropriate time he would make comments, if needed.

Asked about his tweets on Emergency, which was targeted by Congress asking whether there is democracy in the BJP, he countered it saying that BJP has presidents L K Advani followed by Rajnath Singh, Nitin Gadkari, Rajnath again, himself and now J P Nadda.

"After Indira-ji, was there any Congress President from outside Gandhi family? What democracy do they talk about? I did not do any politics during Covid-19. You look at my tweets of the past 10 years. Every June 25, I give a statement," he said.

"Emergency should be remembered by people as it attacked the roots of our democracy. No one should ever forget it. There should be awareness about it. It is not about a party but about the attack on the country's democracy," he said.

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News Network
February 14,2020

New Delhi/Washington, Feb 14: India has offered to partially open up its poultry and dairy markets in a bid for a limited trade deal during US President Donald Trump's first official visit to the country this month, people familiar with the protracted talks say.

India, the world's largest milk-producing nation, has traditionally restricted dairy imports to protect the livelihoods of 80 million rural households involved in the industry.

But Prime Minister Narendra Modi is trying to pull all the stops for the US President's February 24-25 visit, aimed at rebuilding bonds between the world's largest democracies.

In 2019, President Trump suspended India's special trade designation that dated back to 1970s, after PM Modi put price caps on medical devices, such as cardiac stents and knee implants, and introduced new data localization requirements and e-commerce restrictions.

President Trump's trip to India has raised hopes that he would restore some of the country's US trade preferences, in exchange for tariff reductions and other concessions.

The United States is India's second-largest trade partner after China, and bilateral goods and services trade climbed to a record $142.6 billion in 2018. The United States had a $23.2 billion goods trade deficit in 2019 with India, its 9th largest trading partner in goods.

India has offered to allow imports of US chicken legs, turkey and produce such as blueberries and cherries, government sources said, and has offered to cut tariffs on chicken legs from 100 per cent to 25 per cent. US negotiators want that tariff cut to 10 per cent. The Modi government is also offering to allow some access to India's dairy market, but with a 5 per cent tariff and quotas, the sources said. But dairy imports would need a certificate they are not derived from animals that have consumed feeds that include internal organs, blood meal or tissues of ruminants.

New Delhi has also offered to lower its 50 per cent tariffs on very large motorcycles made by Harley-Davidson, a tax that was a particular irritant for President Trump, who has labelled India the "tariff king." The change would be largely symbolic because few such motorcycles are sold in India.

President Trump will be feted in PM Modi's home state of Gujarat, then hold talks in New Delhi and attend a reception that the hosts have promised will be bigger than the one organised for former president Barack Obama in 2015.

But it is far from clear whether India's offers will be enough to satisfy US Trade Representative Robert Lighthizer, who cancelled plans for a trip to India this week. Instead, he has held telephone talks with Commerce Minister Piyush Goyal.

The US dairy industry remained sceptical on Thursday that a viable deal is at hand.

"We're always looking for market access, but in terms of India, as of today I'm not aware of any real progress going on," said Michael Dykes, president of the International Dairy Foods Association and a member of USTR's agricultural trade policy advisory committee.

Mr Dykes said the US dairy industry was looking for access in viable commercial quantities.

A USTR spokesman and India's trade ministry did not respond to requests for comment.

A parliament panel is reviewing a draft data privacy law that imposes stringent controls over cross-border data flows and gives the government powers to seek user data from companies.

It is not clear whether it will be passed, or in what form, but the possibilities have unnerved US companies and could raise compliance requirements for Google, Amazon.com Inc, and Facebook.

The draft law is not part of the trade discussions, Indian officials say, because the issue is too difficult to resolve at the same time.

"The privacy and localization piece will be raised independently and in concert with the trade discussions," said a Washington-based source with knowledge of the US administration's thinking.

President Trump on Tuesday was non-committal about sealing a trade deal before his visit. "If we can make the right deal, we'll do it," he told reporters.

Two US sources said progress had been made on proposed alterations to the medical device price caps. India's new import tariffs on medical devices, walnuts, toys, electronics and other products on February 1 surprised US negotiators, however.

The new tariffs were aimed at China, which also makes medical devices, according to an Indian government source. "We have to protect our market and our companies," the source said.

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