Thursday January 24, 2019
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ISRO ready to launch fifth regional navigation satellite


Sriharikota: India is reading to launch its fifth regional navigation satellite on Wednesday from its spaceport here, a senior space agency official said on Tuesday.

“The countdown (T-48) is going on smoothly since it was started on Monday at 09:30am. The launch authorisation board will take the final call on early morning tomorrow (Thursday) for the final countdown (T-10),” Indian Space Research Organisation’s (ISRO) satellite director M. Annadurai told IANS.

The 320-tonne 44-metre rocket (PSLV-C31) will lift-off from the second launch pad at the Satish Dhawan space centre here at 9.31 a.m. and deploy the 1,425 kg fifth navigation satellite into as sub-geosynchronous orbit 19 minutes and 20 seconds later at an altitude of 503 km from above the earth.

“Besides checking all launch systems and the satellite onboard, the rocket’s tanks are being filled with liquid fuel in all its four stages,” Annadurai said.

As part of the Indian Regional Navigation Satellite System (IRNSS), comprising seven spacecraft, the fifth satellite (IRNSS-1E) will also aid terrestrial, air and maritime transport, besides giving standard positioning services at pat with global positioning system to all users.

The navigation system will also be used for disaster management, vehicle tracking and fleet management, integration with mobile phones, mapping and geodetic data capture, visual and voice navigation for drivers and others.

Till date India has launched four regional navigational satellites (IRNSS-1A, 1B, 1C and ID) as part of a constellation of seven satellites to provide accurate position information service to users across the country and the region, extending up to an area of 1,500 km.

“The system will provide two types of services – standard positioning services to all users and restricted services to authorized users,” Annadurai added.

Each satellite costs about Rs.150 crore and the polar satellite launch vehicle (PSLV-XL) version rocket Rs.130 crore.

The constellation is planned to be completed this year, with the launch of sixth and seventh satellites in February and March.

The first satellite IRNSS-1A was launched in July 2013, the second IRNSS-1B in April 2014, the third on October 2014 and the fourth on March 2015.

The satellite’s payload will transmit navigation service signals to users, operating in L5-band and S-band. An accurate rubidium atomic clock is part of the navigation payload.

The spacecraft is also carrying corner cube retro reflectors for laser ranging.

The satellite has 12-year lifespan. (IANS)

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Space Kidz India Plans”Vikrmsat” Satellite To Conduct Biological Experiments In Space

Kalamsat will be the first to use the rocket's fourth stage as an orbital platform. The fourth stage will be moved to higher circular orbit

A satellite, (representational Image), Pixabay

Chennai-based Space Kidz India plans to build a satellite – Vikramsat – to do some biological experiment in space, said a top official.

She also said her dream of putting a satellite built by students will become a reality on January 24 night when an Indian rocket Polar Satellite Launch Vehicle (PSLV) will carry a small communication satellite Kalamsat.

“We are planning to build a satellite called Vikramsat to do some biological experiment in the space. By this we hope to contribute in a small way to India’s ambitious human space mission Gaganyaan,” Srimathy Kesan, Founder CEO of Space Kidz India, told IANS.

Speaking about the nano-satellite Kalamsat, she said it was a 10cm cube, 1.2 kg communication satellite with a life span of two months. The satellite cost was about Rs.12 lakh.

According to her, Kalamsat will be the first satellite of Space Kidz India to be in a proper orbit as its earlier satellites were suborbital ones.

Space Kidz India is working towards promoting art, science and culture for students of India, create an international platform for them.

India will open its 2019 space programme account on January 24 night by launching imaging satellite Microsat-R for the Defence Research Development Organisation (DRDO) and Kalamsat.

The satellites will be carried by a new variant of India’s Polar Satellite Launch Vehicle (PSLV) rocket.

space kidsz india
Chennai-based Space Kidz India plans to build a satellite – Vikramsat – to do some biological experiment in space, said a top official.

“We will be launching 700-kg Microsat-R and Kalamsat with a new variant of Polar Satellite Launch Vehicle (PSLV). In order to reduce the weight and increase the mass, an aluminum tank is used for the first time in the fourth stage,” K. Sivan, Chairman of Indian Space Research Organisation (ISRO), told IANS.

The PSLV is a four-stage engine expendable rocket with alternating solid and liquid fuel.

In its normal configuration, the rocket will have six strap-on motors hugging the rocket’s first stage.

PSLV , ISRO, wikimedia commons

However, the PSLV that would fly on January 24 with Microsat R and Kalamsat will be a two strap-on motors configuration and is designated as PSLV-DL.

The Indian space agency is planning to have the launch at about 11.40 p.m. on January 24.

The rocket PSLV-C44 is the first mission of PSLV-DL and is a new PSLV variant.

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Kalamsat will be the first to use the rocket’s fourth stage as an orbital platform. The fourth stage will be moved to higher circular orbit so as to establish an orbital platform for carrying out experiments.

Space Kidz India’s Kesan is a happy woman as Kalamsat will be entering the history books on that account. (IANS)