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The Indian space programme has attained new heights in recent consecutive space expeditions undertaken. Now, when ISRO’s PSLV C-34 establishes a record of launching 20 satellites in a single go, it has added one more feather to ISRO’s cap. Earlier, India had launched 10 satellites together way back in 2008!
The PSLV C-34 consists of 20 satellites out which the largest is Cartosat 2, two student satellites and 17 foreign satellites. The unique feature of this space mission is testing the manoeuvre of India’s space capabilities of launching different satellites in different orbits in one attempt.
India’s Earth Observation spacecraft ‘Cartosat 2’ is a remote sensing satellite and a part of Cartosat series which will be useful for cartographic applications, urban and rural applications, coastal land use and regulation, utility management like road network monitoring, water distribution, creation of land use maps, precision study, disaster management, change detection to bring out geographical and manmade features and various other Land Information System (LIS) and Geographical Information System (GIS) applications. The resolution is 25 cms. It means, it will be able to image objects as small as 25 cms. So, specially near the border areas, it will be able to track the movement, thus keep vigil on border.
PSLV- why unique?
Hence, while India is making inroads into the elite group of space experts and showing its capability with numerous indigenous space missions as well as affordable commercial services, No doubt it is called ‘workhorse of ISRO’.
Interesting à USA and Russia had powerful rockets to send the spacecraft straightaway to moon and mars. But ISRO had to use PSLV as it didn’t have powerful rocket. Using PSLV, innovative arrangement was made to reach the moon and mars by having a very large orbit and boosting it by firing booster rocket every time it came near to earth. So, without using powerful rocket, ISRO was able to send probe to moon and mars. Cost of MOM was 1/10th the of USA’s Mars Mission.
Major features of PSLV C-34
Other student satellites previously launched include Youthsat, Jugnu, Studsat etc.
Uniqueness of flight
The past decade has been progressive for ISRO. Increased indigenous space missions and commercial launches have tremendously contributed to conducting new experiments for future space programmes (Aditya, Chandrayaan-II). Launches in lower orbit are continuously taking place for commercial as well as socio- economic reasons like Cartosat or others. Thus, for past decade, it can be said that ISRO is progressing as per plan.
Other achievements
PSLV C-34 comes within a month of another remarkable breakthrough by ISRO when first Reusable Launch Vehicle (RLV) technology-Demonstrator was launched and then recovered. RLV is in nascent stage as it will take another 10 years to have full-fledged space shuttle which will go to space and land back as an aircraft. For now, a good beginning is encouraging.
IRNSS has put all seven satellites in orbit (Operational name NAVIC- NAVigation with Indian Constellation). It is India’s big achievement to have indigenous system for navigation to provide accurate real-time positioning and timing services over India and region extending to 1500 km around India. The NAVIC would provide two services, with the Standard Positioning Service open for civilian use, and the Restricted Service (an encrypted one) for authorized users (including the military). Thus, a big boost to Indian military system due to better navigation facility through own satellites.
In another unique initiative, various government departments have been collaborating with ISRO to assess the use of space technologies or applications. Themes of Agriculture, Energy and Environment, Infrastructure, Water, Development Planning, Communication and Navigation, Weather and Disaster Management, Health and Education are expected to have space application interventions for more useful effect in governance and development activities.
Competitive future
3-5 years ago, ISRO was able to conduct 1-2 launches in the entire year. Now, it plans to conduct one launch per month in future. This points out to increased proficiency and additional launching facilities made at same launch site available. The pressure of commercial launches is simultaneously building up. Thus, ISRO has to make progress in rapid fashion in the space market to establish itself as reliable, affordable launch vehicle provider.
GSLV future
ISRO is yet to develop capabilities to launch satellites of INSAT class (They are heavy satellites of more than 2tonnes to be placed in GTOs which is possible only through GSLV). INSAT (Communication satellite) is used for telecommunications, broadcasting, meteorology, and search and rescue operations. However, it has been launched with help of foreign launch vehicles only. To holistically develop India’s space programme, India has to successfully create GSLV’s advanced versions. GSLV MkIII programme of ISRO is slated to be a game changer when it establishes mammoth capacity to launch 4-6 tonnes payload into space.
GSLV MkIII is most powerful rocket in design. It features an Indian cryogenic third stage and a higher payload capacity than the current GSLV. GSLV MkIII replaces the solid core stage with a large liquid-fuelled core stage and twin Solid Rocket Boosters with a large cryogenic upper stage stacked on top.
Key words:
PSLV: Polar Satellite Launch Vehicle
GSLV: Geosynchronous Satellite Launch Vehicle
Cryogenic Technology:
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Refer:
ISRO’s Reusable Launch Vehicle Technology Demonstrator (RLV-TD)