Showing posts with label SATELLITE. Show all posts
Showing posts with label SATELLITE. Show all posts

Tuesday, April 2, 2019

A-SAT missile test created 400 pieces of debris, put ISS at risk: Nasa


Nasa's Jim Bridenstine said about 60 pieces have been tracked so far and out of which 24 are going above the apogee of the ISS.


The NASA on Tuesday termed as a "terrible thing" India's shooting down of one of its satellites that has created about 400 pieces of orbital debris, endangering the International Space Station (ISS).

NASA Administrator Jim Bridenstine said about 60 pieces have been tracked so far and out of which 24 are going above the apogee of the ISS.

"That is a terrible, terrible thing to create an event that sends debris and an apogee that goes above the international space station. That kind of activity is not compatible with the future of human spaceflight that we need to see have happen," he said at a NASA townhall here.

"The ASAT test by India last week has resulted in about 400 pieces of orbital debris," he added.

Bridenstine said not all of the pieces were big enough to track and the NASA is right now tracking objects which are 10 centimeters or bigger.

"Some 60 pieces of orbital debris have been tracked so far, 24 out of which poses risk to the International Space Station," he said.

Bridenstine was addressing employees of the National Aeronautics and Space Administration days after Prime Minister Narendra Modi, in a televised address, announced that India shot down a satellite in space with a missile, catapulting the country into an elite club of space powers alongside the US, Russia and China
Bridenstine is the first top official from the Trump administration to come out in public against the India's ASAT test.

"We are charged with commercialising of low earth orbit. We are charged with enabling more activities in space than we've ever seen before for the purpose of benefiting the human condition, whether it's pharmaceuticals or printing human organs in 3D to save lives here on earth or manufacturing capabilities in space that you're not able to do in a gravity well," he said.

"All of those are placed at risk when these kinds of events happen," Bridenstine said as he feared India's ASAT test could risk proliferation of such activities by other countries.
"When one country does it, other countries feel like they have to do it as well," he said.
"It's unacceptable. The NASA needs to be very clear about what its impact to us is," the NASA Administrator said.


Thursday, September 6, 2018

Isro working on smaller satellite launch vehicles with up to 700 kg payload


The ISRO will need 50-60 such vehicles every year and the prime focus of the space research agency would be on the Gaganyan.


The ISRO is working on building smaller launch vehicles that will carry satellites weighing 500 to 700 kg to up to 500 kilometres from the earth's surface, its chief, K Sivan, said Thursday.

Speaking at the inaugural session of the Bengaluru Space Expo 2018, a biennial event organised by the Indian Space Research Organisation (ISRO), Sivan said the agency was planning to open incubation centres at six places in the country to encourage innovation and start-ups.

He said the academia and the industry are two strong pillars of the ISRO and urged the industry to come forward and share the agency's "load".

"The demand for small satellites is growing. Small satellites are going to be used for communication purposes in an enormous way. To catch up with the small satellites market, ISRO is in the process of developing a small satellite launcher," he said.


These satellites, Sivan added, would be of very repetitive nature and easier to produce.
The small launch vehicle will be different from the Polar Satellite Launch Vehicle (PSLV), ISRO's trusted workhorse, and should take only 72 hours for integration, he said.

"We are working on small satellite launch vehicles. These will be able to launch a satellite of 500 to 700 kilograms in a range of 500 kilometre from Sriharikota (the Satish Dhawan Space Centre)," he said.

The ISRO will need 50-60 such vehicles every year, Sivan said, noting that the industry should come forward in this endeavour as over the next 3-4 years, the prime focus of the space research agency would be on the Gaganyan.

"We don't want to spend time on making these smaller vehicles. We want to give this to the industry and it should take part to make it more effective," he said.

Article Source BS