ISRO to launch electronic intelligence satellite ‘Emisat’
The Indian Space Research Organisation would be launching an electronic intelligence satellite Emisat for Defence Research and Development Organisation in March 2019. In the special mission, ISRO would also be launching 28 third-party satellites and demonstrate its new technologies.
The Indian Space Research Organisation (ISRO) would be launching an electronic intelligence satellite Emisat for Defence Research and Development Organisation (DRDO) in March 2019.
In the special mission, ISRO would also be launching 28 third-party satellites and demonstrate its new technologies like three different orbits with a new variant of Polar Satellite Launch Vehicle (PSLV) rocket.
The exact date of the mission has not been specified yet.
• ISRO would be using a PSLV rocket with four strap-on motors. For the first time, it will be trying to orbit the rocket at three different altitudes.
• The main passenger of the PSLV rocket will be DRDO's electronic intelligence satellite 'Emisat'. The satellite alone weighs about 420 kg.
• The remaining 28 satellites would cumulatively weigh about 250 kg.
• After launching Emisat at an altitude of 763 km, the PSLV rocket will be brought down to put the 28 satellites into orbit at an altitude of 504 km.
• Following that the rocket will be brought down further to 485 km where the fourth stage will turn into a payload platform carrying three experimental payloads.
• The experimental payloads include one developed by the students of Indian Institute of Space Science and Technology, ISRO's own technology demonstrator and a Hamsat.
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.
The space agency selects the kind of rocket to be used based on the weight of the satellites it carries.
In January, the space agency launched a defence imaging satellite Microsat R for the DRDO.
On January 24, the ISRO flew a PSLV with two strap-on motors while in March it will have four strap-on motors.
The space agency has two more PSLV variants -Core Alone, which does not have any strap-on motors and PSLV-XL, which is a larger rocket.
Further, ISRO will be launching two more defence satellites in July or August 2019 with its new rocket Small Satellite Launch Vehicle (SSLV).
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