Indian Space Program: News & Discussions

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PSLV-C41 long exposure shot by reddit user /u/arunvenkats
 
Isro plans orbital re-entry test for re-usable vehicle - Times of India

Isro plans orbital re-entry test for re-usable vehicle
Chethan Kumar | TNN | Apr 22, 2018, 03:59 IST

BENGALURU: Isro is set to follow up the successful tests of the re-usable launch vehicle technology demonstrator (RLV-TD) with a major experiment, though the immediate priority is the Chandrayaan-II mission slated for an October launch. It has completed the wind tunnel model with landing gear and low subsonic tests at the IIT-Kanpur.

In the next phase, Isro has proposed to design and develop a scaled-up version of RLV and carry out an orbital re-entry experiment.
“Site has been identified for the experiment and configuring landing runway with navigational aids for an autonomous descent. For unmanned landing, navigational aids and associated systems have to be established,” scientists working on the project said.

Isro chief K Sivan, while confirming there are multiple experiments of RLV-TD in the pipeline, said: “That will happen only next year. This year, our focus is on various other missions.”
 
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Isro to launch slew of military satellites soon - Times of India

Isro to launch slew of military satellites soon
Surendra Singh | TNN | Updated: Apr 23, 2018, 07:10 IST

NEW DELHI: Amid preparations for its high-profile Rs 800 crore Chandrayaan-2 mission scheduled for an October launch, Indian Space Research Organisation (Isro) is also gearing up to launch a slew of important satellites in the coming months.

Some of these satellites are significant for strategic reasons as they will help the military keep an eye on our hostile neighbours and safeguard our land and sea borders.

Isro will launch a dedicated satellite, Gsat-7A, for the Indian Air Force (IAF) in September and an advanced remote sensing satellite, Risat-2A, for surveillance purpose by the end of the year.

Gsat-7A, which will be lifted by a GSLV Mk II rocket, will enable the IAF to interlink different ground radar stations, airbases and AWACS aircraft. It will also boost the IAF’s network-centric warfare capabilities and enhance its global operations.

The satellite will be similar to Gsat-7 or Rukmini, which was launched on September 29, 2013, exclusively for the Navy. Rukmini has helped the Navy monitor the Indian Ocean Region (IOR) as the satellite has a nearly 2,000 nautical mile ‘footprint’ and provides real-time inputs to Indian warships, submarines and maritime aircraft and also boosts the force’s networking capabilities on the high seas. Rukmini, considered the Navy’s ‘eye in the sky’, is also being used to keep tabs on Chinese warships in the Indian Ocean.

Risat-2A, which will be launched by the end of this year by a PSLV rocket, is an advanced remote sensing satellite that will boost the country’s surveillance capabilities.

The satellite, which will carry a sophisticated synthetic aperture radar that operates at 5.35 GHz in C band, will help in earth observation irrespective of the light and weather conditions of the area.

Risat-2A, which can be used for civilian purpose, will primarily be used for land mapping but will also be significant for analysis of the ocean surface. Risat-2A will be the third in the series of Risat satellites.

After the 26/11 terror attacks in Mumbai in 2008, Risat-2 satellite took priority over Risat-1 and was launched in April 2009 as the former carried an Israelbuilt X-band radar, which boosted surveillance capabilities of the security forces.

Cartosat-2 series satellite, launched on January 12, is also a remote sensing satellite and significant for the military too as its panchromatic camera can produce images less than 1 metre in resolution.

In fact, it is said that the Army used images from the earlier Cartosat satellite to plan the surgical strikes on Pakistan terror launchpads in September 2016.

Besides the military satellites, Isro will also launch its “heaviest satellite ever” Gsat-11 weighing 5.7 tonnes from French Guiana by June.

The heavy-duty communication satellite is so massive that each solar panel is over four metres long, equivalent to the size of a room.

Gsat-29, which too is a communication satellite, will be the launched by the second developmental flight of Isro’s heaviest rocket GSLV Mk III in June. It will carry multi-beam and optical communication payloads.

Isro chairman Dr K Sivan told TOI, “Together, all these heavy-duty Gsats will provide high-bandwidth connectivity of up to 100 gigabit per second. They will provide high-speed internet connectivity in rural areas as well and help bridge the digital divide.”

With almost one launch every month, 2018 will be a busy year for Isro.
 
Massive Fire at Indian Space Research Unit That Prepares Payloads

More than 25 firefighting vehicles are on a mission to douse flames that have partially engulfed a critical space application center in India. The extent of damage and loss is yet to be ascertained.

New Delhi (Sputnik) — A major fire has broken out inside the Space Application Centre campus of the Indian Space Research Organisation (ISRO) in Ahmedabad. The center prepares payloads and other critical applications for the ISRO.


"A major fire broke out at the research center inside the sprawling SAC campus in the Satellite area of the city this afternoon. As many as 25 fire tenders have finally doused the fire," the municipal commissioner of Ahmedabad told media.

The ISRO had not divulged details about the estimated loss. However, it is worth mentioning here that earlier this month, the ISRO had recalled a communication satellite from French Guiana to conduct some more technical tests at the center that has caught fire. The satellite was scheduled for launch on May 25 by Arianespace.


Even though fire was started bcuz of SC but i believe foreign powers are targeting ISRO for past year now.
 
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ISRO's big scheme to send small rockets into space
Raghu Krishnan | ET Bureau | May 4, 2018, 13:41 IST

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India’s space agency aims to create a consortium of companies to build and market a small rocket to launch low-weight satellites at lesser cost and within shorter durations, as it seeks to tap into burgeoning global demand for such services.

Led by Antrix Corp — the commercial arm of the Indian Space Research Organisation — the consortium will include engineering major Larsen & Toubro, Godrej Aerospace and Hindustan Aeronautics Ltd. The combine will help Isro build a small rocket capable of carrying 500 kilogram satellites into the lower earth orbit. “Antrix is working on a model to involve industry from the beginning. Our aim is that one or two rockets will be launched by Isro, the industry should then make the rockets and launch satellites,” said K Sivan, chairman of ISRO in an interview with ET. He said ISRO has approached these companies and that “they are all interested”.

“The price of a satellite launch on this small rocket is expected to be less than one-fifth of the current launch costs,” Sivan added. The first development flight or launch of the rocket will be by 2019.

By involving companies such as L&T, Godrej and HAL, in the initial stages the space agency expects to improve the manufacturing process and bring down the cost of the rocket.

Typically, ISRO takes around 45 days to assemble its workhorse the Polar Satellite Launch Vehicle (PSLV). The smaller rocket, to be powered by a solid booster, is expected to be ready for launch in three days. It is being designed to place low-weight satellites in the low earth orbit of around 500 kilometres.

“We are looking at some disruptive technologies with this (rocket),” said Sivan.

ISRO's big scheme to send small rockets into space - Times of India
 
Said this sometime back when Isro started facing failures on small small missions out of nowhere. There is something not right, the building maybe equipped with CCTV, hope they can find real cause.


Agree.
Isro's antenna test facility damaged in fire, cops to probe possible foul play, sabotage

While an inquest will be held to probe what caused the fire, the fire service department said that it could be due to a short circuit. However, the SAC sources say, "The police will probe the cause of the fire. The facility has a strong protocol to battle fire caused due to short circuits. That is why the probe will cover the possibility of foul play and even sabotage."

The space centres operated by Isro have strong fire safety protocols and fires are rare. The last major fire incident recorded at an Isro facility was in 2004 when six people were killed and three seriously injured in a blast at a plant making solid propellants at the Satish Dhawan Space Centre, Sriharikota.
 
130 firemen fight major blaze at ISRO's facility: Quick facts

130 firemen fight major blaze at ISRO's facility: Quick facts
Firefighting personnel said that it was only after they reached the facility that they realized that the fire was a major one. Dr Tapan Misra, Director the SAC said that the police will investigate if there was foul play and sabotage involved in the mishap.

By : Sriparna Ghosh
May 4, 2018 09:13 IST

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It took 130 firemen and around 25 fire trucks to battle the blaze. (Representational Image)Reuters

A major fire broke out in a major facility of the Indian Space Research Organization (ISRO) at Gujarat's Ahmedabad city at around 1:15 pm on Thursday. The bustling complex of the ISRO is located in the middle of the city.

Quick facts:
  • It took 130 firemen and around 25 fire trucks to battle the blaze, which had broken out at the Space Applications Centre (SAC).
  • The fire control department said that it was only after they reached the spot that they realized that the blaze was major.
    "The fire-fighting operation began with seven vehicles but 24 vehicles were eventually engaged, due to the importance of the campus," The Times of India quoted an Ahmedabad Fire and Emergency Services (AFES) official as saying.
  • The fire started inside a simulation lab located on the third and fourth floor of building 37.
  • The flames were extinguished in one and a half hours, but it took the security personnel three and half hours to clear the smoke.
  • Though the exact cause of the fire is not yet known, it is believed to have started from an electrical short-circuit.
  • Dr Tapan Misra, Director the SAC said that the police will also investigate if there was foul play and sabotage involved in the mishap.
  • "The immediate cause of the fire has not been identified and it will be confirmed only after an investigation by the competent authorities. The incident is not expected to affect projects and programmes of SAC/ISRO significantly," the facility said in its statement.
Fire has been doused and the entire premises is safe and secure: Municipal Commissioner, Ahmedabad on fire at Space Applications Centre (ISRO) #Gujarat pic.twitter.com/SW7ROEcEYC
— ANI (@ANI) May 3, 2018
  • Two Central Industrial Security Force personnel and two AFES personnel engaged in the firefighting were injured. The 30 to 40 ISRO scientists who work in the facility were safe
  • Misra added that while the "antenna test facility" had caught fire and a few equipment was damaged, "no satellite payload" has been lost, reported NDTV.
Ahmedabad: Fire breaks out in the machinery department at Space Applications Centre. 20 fire tenders & 10 ambulances at the spot, 1 CISF personnel injured. #Gujarat pic.twitter.com/Jd2L7LNNHX
— ANI (@ANI) May 3, 2018
  • The facility specializes in making eminent components for India's satellites. Multiple parts of several satellites like Chandrayaan-2 were made at SAC.
 
ISRO’s clock to prop up India’s own GPS

ISRO’s clock to prop up India’s own GPS
Madhumathi D.S.BENGALURU,May 05, 2018 22:50 IST
Updated:May 05, 2018 22:51 IST


TH06PSLV

The PSLV C26 lifting off with IRNSS 1C navigation satellite from Sriharikota.

Repeated failures of foreign-made atomic clocks have dogged NavIC project
Time is running out for the seven-satellite Indian Regional Navigation Satellite System (IRNSS), also known as NavIC (Navigation in Indian Constellation). NavIC, whose seventh satellite was launched in April 2016, was expected to provide India a satellite-based navigation system independent of the U.S.-controlled GPS (Global Positioning System). But India’s own ‘regional GPS’ is yet to become officially operational owing to repeated failures of the atomic clocks on the satellites.

In view of the cascade of failing imported atomic clocks — nine out of the 21 clocks in the fleet have failed — ISRO has decided to add buffers to the NavIC by adding four more satellites. It hopes to have an indigenous atomic clock in each of them. “We are in the process of getting approval [from the government] for at least another four IRNSS satellites,” ISRO Chairman K.Sivan told The Hindu, confirming the failure of clocks. “However, they will have some advanced technology, apart from the atomic clocks developed by ISRO.” NavIC is meant to give Indian civil and military users reliable location and time information, for which the performance of the atomic clocks is critical.

The indigenous atomic clock is being developed by the Space Applications Centre, Ahmedabad, Mr. Sivan said, adding that once it passes qualification tests, “We will first demonstrate the indigenous clock in an upcoming navigation satellite, along with the imported ones. Work on them is going on in full steam.”

The cost and timing of the new satellites are not finalised, Mr. Sivan said. The development and eventual use of an indigenous atomic clock, at a cost of a few hundred crore rupees, was part of the NavIC concept, he added.

First failures in 2016
The rubidium atomic clocks from Europe started failing on the first navigation satellite, IRNSS-1A, around 2016, soon after ISRO put the last and seventh satellite in orbit. Until a few months ago, three more satellites were said to have suffered “one or two dysfunctional clocks” each, while two satellites did not have any problematic clocks. Each satellite carries three atomic clocks, including a standby.

ISRO is concerned that if more clocks fail, it may render the ₹1,400-crore fleet a dud in space. NavIC, which will be controlled solely by India, unlike the American GPS or Russian Glonass navigation systems, will be useful as navigation aids for the armed forces.
 
This is huge fail.

Cross posting from NavIC/IRNSS discussion of user handle vineethgk

ISRO has sought govt approval to launch four more IRNSS satellites equipped with indigenous Rb atomic clocks. 9 out of 21 of the imported SpectraTime clocks in the in-orbit satellites are reported to have failed so far.

Source is the aforesaid link of Hindu

Now which types of same are onboard of IRNSS;




star-lpro.png


lcr.png






lpfrs1.png

Spectratime - Rubidium, Crystal, Maser Clocks and Systems

Any idea guys ? It appears that Spectratime built clocks has previous history of failure:

Rash of Galileo clock failures cast doubt on timing of upcoming launches - SpaceNews.com

Galileo’s rash of atomic clock failures have involved both types of clocks aboard the 18 Galileo satellites launched to date. Three of the clocks that failed were rubidium atomic frequency clocks and seven were newer, more-precise passive hydrogen maser clocks, one of which has since restarted. Swiss firm Spectratime produces both clocks, but the company declined to comment.

China and India use the same Spectratime-built atomic clocks for their satellite navigation systems. Woerner said that ESA had contacted India about the problems.
 
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ISRO engineer Saji K Sam gets Nutrition award

ISRO engineer Saji K Sam gets Nutrition award
DECCAN CHRONICLE.
Published May 6, 2018, 2:23 am IST

Updated May 6, 2018, 2:23 am IST

Many expert doctors in nutrition therapy or orthomolecular medicine from across the world presented research papers at the three-day conference.

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Saji K. Sam

THIRUVANANTHAPURAM: ISRO scientist Saji K. Sam has bagged the national health care award instituted by the Indian Nutritional Medical Association. An engineer in satellite design at ISRO Inertial Systems unit here, Sam has created awareness on therapeutic nutrition that offers relief to patients suffering from chronic cancer, heart ailments etc. Sam’s nutritional therapy is based on ‘orthomolecular medicine,’ a form of alternative medicine which aims to maintain health through nutritional supplementation.

This was developed by two-time Nobel laureate in chemistry and peace Linus Pauling. “Modern medicine and orthomolecular medicine are on a par with each other in addressing various health issues which affect the standard of living. It was this understanding which brought me to this nutritional field under the guidance of INMA president Dr. A. Sreekumar, who is an ENT, head and neck surgeon,” said Saji.

He claimed that these days doctors depend on nutrition therapy to treat patients along with modern medicine. The award was handed over to Saji by Ernakulam district collector K. Mohammed Y. Safirulla at the eighth Nutritional and Environmental International Medical Conference (NEMCON 2018) in Kochi the other day. Many expert doctors in nutrition therapy or orthomolecular medicine from across the world presented research papers at the three-day conference.
 
Hyderabad-based National Remote Sensing Centre gives a new boost to forest conservation

The centre has developed a new system that can monitor changes in forest cover over area as small as one hectare of land; TS forest dept will be the 1st to do the pilot test of new system

HYDERABAD: Efforts to conserve forests across the country is likely to get a major boost, thanks to Hyderabad-based National Remote Sensing Centre(NRSC), an arm of Indian Space Research Organization(ISRO). The centre has developed a new system that can monitor changes in forest cover over area as small as one hectare of land. The new system was made possible with the fusion of Optical Remote Sensing, Geographic Information System, Artificial Intelligence and Automation.

Apart from this, the new system will help NSRC generate monthly reports on forest cover and provide specific latitude and longitude of location where changes in green cover are observed. Telangana forest department will be the first in the country to benefit from this new system. NRSC has already tested the system and will soon be conducting pilot study in Telangana.

P Raghuveer, the Principal Chief Conservator of Forests(IT) with State forest department told Express that as part of the pilot project NSRC will monitor forest cover changes in Kothagudem district, one of the worst affect parts of the State. “We have entered into an MoU with the NRSC. The processing of satellite imagery and generating reports on forest cover changes usually takes about 9 months, but we have managed to bring it down to 4-5 months. We have asked the NRSC to develop a system which can make it possible to provide information on forest cover change once in five days,” he said.

How does the new system work?
Presently, satellite imagery of large tracts of forest lands -- about 5-10 hectares -- are analysed for positive or negative changes in green cover. Negative change means deforestation has occurred in that particular forest patch or forest quality has degraded there. Once the satellite images are obtained, they are processed by scientists and reports are generated on an annual basis on the changes observed in the forest patches. This report on forest cover changes, gives information on the area of forest that has experienced either a positive or negative change inside a forest division.

However, more than large-scale level of deforestation in forest areas, which was the norm previously, nowadays forests in Telangana and across India are facing threat from small scale deforestation, in which forests of small patches of 1 hectare or less area are encroached or chopped. This further leads to fragmentation of forests and affects the forest as well as wildlife. With NRSC developing technology that makes it possible for monitoring forest cover changes over small areas of one hectare, by improving the resolution from 50 metres to 30 metres for Optical Remote Sensing, it helps in getting details of small-scale deforestation in forests.

Improved frequency of reporting
Earlier the reports on forest cover changes were generated on an annual basis. However, now the NRSC has developed their automated forest change detection algorithm, by which it can generate reports on a monthly basis as well. Moreover, the NRSC will also provide the exact location - Latitude and Longitude, of the locations inside forests where the forest cover change has been observed.

With these reports the forest department need not wait for months together to get one report on forest cover change and can keep a tab on encroachments of forests or deforestation on a monthly basis, ensuring quick action as well as limiting the damage caused to forests.

105 % increase in negative change in forest cover in Telangana since 2014

Since 2014-15, the positive change in forest cover has increased in Telangana from 706 Ha to 2,000 Ha in 2016-17. However, it is not a matter to rejoice as in the same period, the negative change in forest cover has increased much faster - by about 105 percent - from 1,818 Ha in 2016-17 to 3,741 Ha in 2017-18. The highest ‘negative change in forest cover’, in the period 2016-17, is 325Ha at Asifabad forest division located close to Forest minister Jogu Ramanna’s constituency Adilabad. Medak seems to have become the hub of deforestation in Telangana as Hyderabad continues to expand.