Today's Headlines - 31 July 2023
ISRO PSLV-C56 mission successful
GS Paper - 3 (Space Technology)
India space agency, ISRO, on 30 July 2023 successfully launched its proven PSLV rocket carrying seven Singaporean satellites from Satish Dhawan Space Centre, Sriharikota. After lift-off, the primary satellite got separated and it was followed by six other co-passenger satellites, which were deployed into the intended orbits sequentially.
The primary payload
The primary payload carried by ISRO's trusted workhorse Polar Satellite Launch Vehicle is the DS-SAR Radar Imaging Earth Observation satellite, which has been developed under a partnership between DSTA (representing the Government of Singapore) and ST Engineering, Singapore.
The 360-kg satellite, upon deployment at an altitude of 535 km into a Near-equatorial Orbit (NEO), would be used to support the satellite imagery requirements of various agencies within the Government of Singapore.
ST Engineering would use the satellite for multi-modal and higher responsiveness imagery and geospatial services for their commercial customers.
The satellite carries a Synthetic Aperture Radar (SAR) payload developed by Israel Aerospace Industries.
The payload allows DS-SAR to provide for all-weather day-and-night coverage and it is capable of imaging at 1-metre resolution.
The co-passenger satellites are:
VELOX-AM, a 23 kg technology demonstration microsatellite
ARCADE Atmospheric Coupling and Dynamics Explorer (ARCADE), an experimental satellite
SCOOB-II, a 3U nanosatellite flying a technology demonstrator payload
NULloN by NuSpace, an advanced 3U nanosatellite enabling seamless Internet of Things connectivity in both urban and remote locations
Galassia-2, a 3U nanosatellite that would be orbiting at low earth orbit
ORB-12 STRIDER, a satellite developed under an international collaboration.
About Launch Vehicle
This mission is the 58th flight of PSLV and using the 17th vehicle with Core Alone Configuration.
A Core Alone version of the rocket means the vehicle would not use solid strap-on motors on its sides in the first stage as compared to other variants like PSLV-XL, QL, and DL which use six, four, or two boosters, respectively.
PSLV has earned its title as the 'Workhorse of ISRO' through consistently delivering various satellites into low earth orbits.
This is the second campaign to be undertaken by ISRO after the much-awaited Chandrayaan-3 mission which was launched on 14 July 2023 from the second launch pad, at Satish Dhawan Space Centre.
#upsc #news #todayheadline #ISRO #PSLV #mission #space #technology #india #agency #launched #singaporean #satellite #satishdhawan #sriharikota #singapore #NEO #geospatial #SAR #aerospace #industries #israel #VELOXAM #ARCADE #SCOOB #NULION #GALSSSIA2 #ORB12 #chandrayaan3
ISRO PSLV-C56 mission successful
GS Paper - 3 (Space Technology)
India space agency, ISRO, on 30 July 2023 successfully launched its proven PSLV rocket carrying seven Singaporean satellites from Satish Dhawan Space Centre, Sriharikota. After lift-off, the primary satellite got separated and it was followed by six other co-passenger satellites, which were deployed into the intended orbits sequentially.
The primary payload
The primary payload carried by ISRO's trusted workhorse Polar Satellite Launch Vehicle is the DS-SAR Radar Imaging Earth Observation satellite, which has been developed under a partnership between DSTA (representing the Government of Singapore) and ST Engineering, Singapore.
The 360-kg satellite, upon deployment at an altitude of 535 km into a Near-equatorial Orbit (NEO), would be used to support the satellite imagery requirements of various agencies within the Government of Singapore.
ST Engineering would use the satellite for multi-modal and higher responsiveness imagery and geospatial services for their commercial customers.
The satellite carries a Synthetic Aperture Radar (SAR) payload developed by Israel Aerospace Industries.
The payload allows DS-SAR to provide for all-weather day-and-night coverage and it is capable of imaging at 1-metre resolution.
The co-passenger satellites are:
VELOX-AM, a 23 kg technology demonstration microsatellite
ARCADE Atmospheric Coupling and Dynamics Explorer (ARCADE), an experimental satellite
SCOOB-II, a 3U nanosatellite flying a technology demonstrator payload
NULloN by NuSpace, an advanced 3U nanosatellite enabling seamless Internet of Things connectivity in both urban and remote locations
Galassia-2, a 3U nanosatellite that would be orbiting at low earth orbit
ORB-12 STRIDER, a satellite developed under an international collaboration.
About Launch Vehicle
This mission is the 58th flight of PSLV and using the 17th vehicle with Core Alone Configuration.
A Core Alone version of the rocket means the vehicle would not use solid strap-on motors on its sides in the first stage as compared to other variants like PSLV-XL, QL, and DL which use six, four, or two boosters, respectively.
PSLV has earned its title as the 'Workhorse of ISRO' through consistently delivering various satellites into low earth orbits.
This is the second campaign to be undertaken by ISRO after the much-awaited Chandrayaan-3 mission which was launched on 14 July 2023 from the second launch pad, at Satish Dhawan Space Centre.
#upsc #news #todayheadline #ISRO #PSLV #mission #space #technology #india #agency #launched #singaporean #satellite #satishdhawan #sriharikota #singapore #NEO #geospatial #SAR #aerospace #industries #israel #VELOXAM #ARCADE #SCOOB #NULION #GALSSSIA2 #ORB12 #chandrayaan3
Today's Headlines - 12 August 2023
‘Sponge cities’ not stopped the floods
GS Paper - 1 (Geography)
China has been hit by devastating floods, inundating cities and causing deaths and infrastructural damage, as well as raising questions about the effectiveness of its 2015 “sponge city” initiative aimed at reducing urban flood risks. The initiative was launched to boost flood resilience in major cities and make better use of rainwater through architectural, engineering and infrastructural tweaks.
Why was the initiative launched?
China has long sought to improve the way it handles extreme weather, and make highly populated cities less vulnerable to flooding and drought.
The “sponge city” initiative was designed to make greater use of lower-impact “nature-based solutions” to better distribute water and improve drainage and storage.
Those solutions included the use of permeable asphalt, the construction of new canals and ponds and also the restoration of wetlands, which would not only ease waterlogging, but also improve the urban environment.
Breakneck urbanisation has encased vast stretches of land in impermeable concrete, often along banks of major rivers that traditionally served as flood plains. With wetlands paved over and nowhere for surplus water to settle, waterlogging and flooding was commonplace.
What has been done so far?
Studies show that many of the local pilot initiatives launched so far have had a positive effect, with low-impact projects like green roofs and rain gardens reducing run-offs.
But implementation has so far been patchy. A total of 30 pilot sponge cities were selected in 2015 and 2016.
By last year, only 64 of China’s 654 cities had produced legislation to implement sponge city guidelines, researchers said in January.
The researchers said the government had so far paid “minimum attention” to sponge city construction, and called for national legislation to be drawn up as soon as possible.
What are the limitations of sponge cities?
Even if sponge city measures had been implemented in full, they would have been unable to prevent this year’s disasters.
Zhengzhou in Henan province was one of the most enthusiastic pioneers of sponge city construction, allocating nearly 60 billion yuan to the programme from 2016 to 2021. But it was unable to deal with its heaviest rainfall in history in 2021.
Experts believe sponge city infrastructure can only handle no more than 200 millimetres (7.9 inches) of rain per day.
At the height of the rainstorms that lashed Beijing at the end of July, rainfall at one station reached 745 millimetres over three and a half days. In July 2021, Zhengzhou saw rainfall in excess of 200 mm in just one hour.
Authorities are also playing catch-up to climate change. This year’s heavy rain hit cities in the normally arid north, where sponge city development is less advanced.
#upsc #news #headline #sponge #floods #geography #china #weather #launched #damage #city #rainwater #wetlands #urbanisation #restoration #canals #ponds #limitations #legislation #disasters #zhengzhou #henan #development #climatechange #rainstorms #rainfall
‘Sponge cities’ not stopped the floods
GS Paper - 1 (Geography)
China has been hit by devastating floods, inundating cities and causing deaths and infrastructural damage, as well as raising questions about the effectiveness of its 2015 “sponge city” initiative aimed at reducing urban flood risks. The initiative was launched to boost flood resilience in major cities and make better use of rainwater through architectural, engineering and infrastructural tweaks.
Why was the initiative launched?
China has long sought to improve the way it handles extreme weather, and make highly populated cities less vulnerable to flooding and drought.
The “sponge city” initiative was designed to make greater use of lower-impact “nature-based solutions” to better distribute water and improve drainage and storage.
Those solutions included the use of permeable asphalt, the construction of new canals and ponds and also the restoration of wetlands, which would not only ease waterlogging, but also improve the urban environment.
Breakneck urbanisation has encased vast stretches of land in impermeable concrete, often along banks of major rivers that traditionally served as flood plains. With wetlands paved over and nowhere for surplus water to settle, waterlogging and flooding was commonplace.
What has been done so far?
Studies show that many of the local pilot initiatives launched so far have had a positive effect, with low-impact projects like green roofs and rain gardens reducing run-offs.
But implementation has so far been patchy. A total of 30 pilot sponge cities were selected in 2015 and 2016.
By last year, only 64 of China’s 654 cities had produced legislation to implement sponge city guidelines, researchers said in January.
The researchers said the government had so far paid “minimum attention” to sponge city construction, and called for national legislation to be drawn up as soon as possible.
What are the limitations of sponge cities?
Even if sponge city measures had been implemented in full, they would have been unable to prevent this year’s disasters.
Zhengzhou in Henan province was one of the most enthusiastic pioneers of sponge city construction, allocating nearly 60 billion yuan to the programme from 2016 to 2021. But it was unable to deal with its heaviest rainfall in history in 2021.
Experts believe sponge city infrastructure can only handle no more than 200 millimetres (7.9 inches) of rain per day.
At the height of the rainstorms that lashed Beijing at the end of July, rainfall at one station reached 745 millimetres over three and a half days. In July 2021, Zhengzhou saw rainfall in excess of 200 mm in just one hour.
Authorities are also playing catch-up to climate change. This year’s heavy rain hit cities in the normally arid north, where sponge city development is less advanced.
#upsc #news #headline #sponge #floods #geography #china #weather #launched #damage #city #rainwater #wetlands #urbanisation #restoration #canals #ponds #limitations #legislation #disasters #zhengzhou #henan #development #climatechange #rainstorms #rainfall
The points can be used as ‘parking spots’ for spacecraft in space to remain in a fixed position with minimal fuel consumption.
They have been named after Italian-French mathematician Joseph-Louis Lagrange (1736-1813), who was the first one to find the positions. So, between the Earth and the Sun, a satellite can occupy any of five Lagrangian points. “Of the five Lagrange points, three are unstable and two are stable. The unstable Lagrange points – labelled L1, L2, and L3 – lie along the line connecting the two large masses. The stable Lagrange points – labelled L4 and L5 – form the apex of two equilateral triangles. The L4 and L5 are also called Trojan points and celestial bodies like asteroids are found here.
#upsc #news #headline #india #first #sun #observatory #launched #space #technology #ISRO #AdityaL1 #firstspace #mission #SatishDhawan #spacecentre #Sriharikota #softland #spacecraft #nearmoon #southpole #polar #satellite #launch #PSLV #workhouse #rocket #chandrayaan #Mangalyaan #boosters #synchronous #orbit #lowerearth #haloorbit #chromosphere #corona #plasma #spectrometer #trojan #point #asteroids
They have been named after Italian-French mathematician Joseph-Louis Lagrange (1736-1813), who was the first one to find the positions. So, between the Earth and the Sun, a satellite can occupy any of five Lagrangian points. “Of the five Lagrange points, three are unstable and two are stable. The unstable Lagrange points – labelled L1, L2, and L3 – lie along the line connecting the two large masses. The stable Lagrange points – labelled L4 and L5 – form the apex of two equilateral triangles. The L4 and L5 are also called Trojan points and celestial bodies like asteroids are found here.
#upsc #news #headline #india #first #sun #observatory #launched #space #technology #ISRO #AdityaL1 #firstspace #mission #SatishDhawan #spacecentre #Sriharikota #softland #spacecraft #nearmoon #southpole #polar #satellite #launch #PSLV #workhouse #rocket #chandrayaan #Mangalyaan #boosters #synchronous #orbit #lowerearth #haloorbit #chromosphere #corona #plasma #spectrometer #trojan #point #asteroids
Today's Headlines - 03 September 2023
Navy's stealth frigate Mahendragiri launched
GS Paper - 3 (Defence)
The seventh stealth frigate, under the Indian Navy's Project 17 A, Mahendragiri, was launched on 1 September 2023. Built at Mazagon Dock Shipbuilders Ltd (MDL), the vessel was developed as part of the push towards the Aatmnirbhar Bharat idea.
More about the frigate
Mahendragiri, a technologically advanced warship stands as a symbol of India's determination to embrace its rich naval heritage, while propelling itself towards a future of indigenous defence capabilities.
Mahendragiri, named after a mountain peak in Eastern Ghats located in the state of Odisha, is the seventh ship of the Project 17A Frigates.
These warships are follow-ons of the Project 17 Class Frigates (Shivalik Class), with improved stealth features, advanced weapons and sensors, and platform management systems.
#upsc #news #headline #navy #stealth #frigate #mahendragiri #launched #defence #Indiannavy #mazagon #dock #shipbuilders #MDL #Aatmnirbharbharatidea #technologically #warship #navalheritage #easternghats #project #shivalikclass #weapons #sensors #systems
Navy's stealth frigate Mahendragiri launched
GS Paper - 3 (Defence)
The seventh stealth frigate, under the Indian Navy's Project 17 A, Mahendragiri, was launched on 1 September 2023. Built at Mazagon Dock Shipbuilders Ltd (MDL), the vessel was developed as part of the push towards the Aatmnirbhar Bharat idea.
More about the frigate
Mahendragiri, a technologically advanced warship stands as a symbol of India's determination to embrace its rich naval heritage, while propelling itself towards a future of indigenous defence capabilities.
Mahendragiri, named after a mountain peak in Eastern Ghats located in the state of Odisha, is the seventh ship of the Project 17A Frigates.
These warships are follow-ons of the Project 17 Class Frigates (Shivalik Class), with improved stealth features, advanced weapons and sensors, and platform management systems.
#upsc #news #headline #navy #stealth #frigate #mahendragiri #launched #defence #Indiannavy #mazagon #dock #shipbuilders #MDL #Aatmnirbharbharatidea #technologically #warship #navalheritage #easternghats #project #shivalikclass #weapons #sensors #systems
Today's Headlines - 06 September 2023
Revamped ‘Adopt a Heritage 2.0’ programme
GS Paper - 1 (Art and Culture)
The Archaeological Survey of India (ASI) launched a revamped version of the ‘Adopt a Heritage’ programme apart from an Indian Heritage app and an e-permission portal.
More about the Programme
Initially launched in 2017 under the Ministry of Tourism, in collaboration with the ASI which invited corporate stakeholders to adopt from over 3,000 protected monuments spread across the country, ‘Adopt a Heritage 2.0’, is the upgraded version of ‘Adopt a Heritage’ programme.
The programme encourages corporate stakeholders to utilise their Corporate Social Responsibility (CSR) funds to enhance facilities at historically-important monuments.
The app, on the other hand, provides a comprehensive guide to monuments under ASI’s ambit. It lists historical structures along with pictures, public facilities available on site and geo-tagged locations.
The e-permission portal has been designed to simplify and speed up the process for acquiring approvals for photography, filming, and developmental initiatives concerning heritage monuments, with the goal of expediting the permission-granting process.
The Adopt a Heritage 2.0 has incorporated a host of changes to the programme after a leaner management and supervision structure for the partner agencies, clear guidelines for semi-commercial activities and detailed scope of work and amenities required for monuments was proposed in the earlier version. 1,000 additional monuments have also been added to the list for adoption.
In the updated programme, more freedom has been given to companies such as the option to either adopt a monument in whole and develop its tourism infrastructure, or provide a particular amenity such as drinking water facility or cleaning services for one or several sites.
#upsc #news #headline #Ravamped #Adopt #Heritage #programme #artandculture #ASI #launched #ministry #tourism #CSR #funds #developmental #monuments #historical #corporate #social #indian #survey #locations #freedom #geotagged #speed #commercial
Revamped ‘Adopt a Heritage 2.0’ programme
GS Paper - 1 (Art and Culture)
The Archaeological Survey of India (ASI) launched a revamped version of the ‘Adopt a Heritage’ programme apart from an Indian Heritage app and an e-permission portal.
More about the Programme
Initially launched in 2017 under the Ministry of Tourism, in collaboration with the ASI which invited corporate stakeholders to adopt from over 3,000 protected monuments spread across the country, ‘Adopt a Heritage 2.0’, is the upgraded version of ‘Adopt a Heritage’ programme.
The programme encourages corporate stakeholders to utilise their Corporate Social Responsibility (CSR) funds to enhance facilities at historically-important monuments.
The app, on the other hand, provides a comprehensive guide to monuments under ASI’s ambit. It lists historical structures along with pictures, public facilities available on site and geo-tagged locations.
The e-permission portal has been designed to simplify and speed up the process for acquiring approvals for photography, filming, and developmental initiatives concerning heritage monuments, with the goal of expediting the permission-granting process.
The Adopt a Heritage 2.0 has incorporated a host of changes to the programme after a leaner management and supervision structure for the partner agencies, clear guidelines for semi-commercial activities and detailed scope of work and amenities required for monuments was proposed in the earlier version. 1,000 additional monuments have also been added to the list for adoption.
In the updated programme, more freedom has been given to companies such as the option to either adopt a monument in whole and develop its tourism infrastructure, or provide a particular amenity such as drinking water facility or cleaning services for one or several sites.
#upsc #news #headline #Ravamped #Adopt #Heritage #programme #artandculture #ASI #launched #ministry #tourism #CSR #funds #developmental #monuments #historical #corporate #social #indian #survey #locations #freedom #geotagged #speed #commercial