🔆 India’s First Indigenous Expendable Turbojet Engine

📍 Why in News?
✅ India achieved a major milestone in aerospace technology with the successful development of its first indigenous expendable turbojet engine

📍 Key Highlights
✅ Designed by DRDO’s Gas Turbine Research Establishment (GTRE)
✅ Manufactured by Azad Engineering, Hyderabad
✅ Engine formally delivered to GTRE
✅ Thrust Class: 350 kg
✅ Developed for defence applications, particularly expendable aerial platforms

📍 What is an Expendable Turbojet Engine?
✅ A single-use jet engine designed for platforms such as cruise missiles and loitering munitions
✅ Optimised for high speed, compact size, and cost-effectiveness
✅ Does not require recovery or reuse after the mission

📍 Working Mechanism
✅ Air Intake & Compression – Incoming air is compressed to increase pressure
✅ Combustion – Fuel mixes with compressed air and burns, generating high-temperature gases
✅ Turbine – Expanding gases rotate the turbine, which drives the compressor
✅ Nozzle – Exhaust gases exit at high speed, producing thrust based on Newton’s Third Law of Motion

📍 Significance
✅ Strengthens Aatmanirbhar Bharat in critical aerospace technologies
✅ Reduces dependence on imported propulsion systems
✅ Enhances indigenous capability in missile and UAV propulsion
✅ Demonstrates India’s growing expertise in advanced metallurgy, precision engineering, and gas turbine technology

📍 UPSC Value Addition
✅ GTRE is a laboratory of DRDO engaged in the design and development of gas turbine engines for defence applications
✅ Turbojet Engine produces thrust primarily through high-velocity exhaust gases and is suitable for high-speed flight

📍 Mains Question
“Indigenous aero-engine technology is a critical pillar of India’s strategic autonomy in defence manufacturing. Discuss with reference to the development of India’s first indigenous expendable turbojet engine.” (15 Marks, 250 Words)

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Q. Mobilizing capital at scale, rather than the mere availability of financial instruments, remains the primary hurdle for India’s climate adaptation and mitigation targets. Evaluate the statement in the context of recent RBI initiatives and the need for a comprehensive Climate Finance Taxonomy. (15 Marks | 250 Words)

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🔆 CURRENT AFFAIRS – 30 JULY 2026

🔆 POLITY & GOVERNANCE

📍 Indian Association for the Cultivation of Science (IACS) Completes 150 Years
✅ Celebrated its 150th Foundation Anniversary on 29 July 2026
✅ Founded in 1876 by Dr. Mahendralal Sircar
✅ Located in Kolkata
✅ One of India’s oldest scientific research institutions
✅ Sir C.V. Raman discovered the Raman Effect here on 28 February 1928, earning India’s first Nobel Prize in Science (1930)

📍 ISRO Conducts YUVIKA 2026
✅ Young Scientist Programme (YUVIKA) completed its 6th edition
✅ Two-week residential programme for Class IX students
✅ 456 students trained across 9 ISRO centres
✅ Focus on space science, STEM education and experiential learning
✅ Selection based on academic performance, rural background, science activities, Olympiads, sports and NCC/Scouts & Guides

📍 INSPIRE Programme
✅ Flagship scheme of the Department of Science & Technology (DST)
✅ Aims to attract young talent towards science and research
✅ INSPIRE Award (MANAK): ₹10,000 support for innovative student projects
✅ Includes Scholarships for Higher Education, INSPIRE Fellowship and Faculty Fellowship
✅ Promotes scientific research without competitive examinations

📍 Atmanirbhar Panchayat Programme
✅ Initiative of the Ministry of Panchayati Raj
✅ Implemented under Rashtriya Gram Swaraj Abhiyan (RGSA)
✅ Aims to strengthen Own Source Revenue (OSR) and fiscal autonomy of Panchayats
✅ Technical and financial support from NABARD and HUDCO
✅ Targets development of 350 projects over four years

📍 High-Powered Task Force on Examination Reforms
✅ Announced by Prime Minister Narendra Modi
✅ Chaired by Nandan Nilekani
✅ Aims to make National Testing Agency (NTA) examinations secure, transparent and technology-driven
✅ Focus on technology integration, tamper-proof logistics, administrative reforms and fast-track courts for exam-related offences

🔆 BANKING & FINANCE

📍 RBI to Introduce Polymer Banknotes
✅ Government approved RBI’s proposal to issue ₹10 and ₹20 polymer banknotes
✅ Made from biaxially oriented polypropylene (plastic substrate)
✅ More durable than conventional paper currency
✅ Existing paper notes will continue to circulate alongside polymer notes during the transition phase
✅ Expected to improve note durability and reduce replacement costs

🔆 SCIENCE & TECHNOLOGY

📍 Kimi K3 AI Model
✅ Developed by Moonshot AI (China)
✅ Among the world’s largest open-weight AI models
✅ Features 2.8 trillion parameters with a 1-million-token context window
✅ Uses Mixture-of-Experts (MoE) architecture
✅ Designed for advanced software development, research automation and coding tasks

🔆 IMPORTANT DAYS

📍 International Day of Friendship
✅ Observed annually on 30 July
✅ Proclaimed by the United Nations General Assembly in 2011
✅ Originally proposed in 1958 by Dr. Ramón Artemio Bracho of Paraguay
✅ Promotes peace, friendship, cultural understanding and global solidarity

📍 Global Tiger Day
✅ Observed annually on 29 July
✅ Established at the Saint Petersburg Tiger Summit (2010), Russia
✅ Promotes tiger conservation and protection of natural habitats
✅ Summit launched the Tx2 Initiative to double the global wild tiger population
✅ India is home to around 70–75% of the world’s wild tigers

🔆 AWARDS & RECOGNITIONS

📍 Fields Medal
✅ Highest international honour in Mathematics
✅ Founded by John Charles Fields
✅ Awarded every four years
✅ Eligible recipients must be below 40 years of age
✅ Includes a gold medal and 15,000 Canadian dollars
✅ First awarded in 1936 at the International Congress of Mathematicians (ICM)

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🔆 DAANVEER Initiative: Citizen-Powered Digital Infrastructure for Gram Panchayats

📍 Why in News?
✅ The Ministry of Panchayati Raj has launched DAANVEER, a voluntary technology-enabled initiative that allows citizens and organisations to donate pre-approved computer bundles to digitally underserved Gram Panchayats through the Meri Panchayat App

📍 Background
✅ 73rd Constitutional Amendment Act, 1992 gave constitutional status to Panchayati Raj Institutions (PRIs)
✅ States are mandated to devolve functions across 29 subjects under the Eleventh Schedule
✅ India has nearly 2.5 lakh Gram Panchayats covering around 6.5 lakh villages
✅ Many Gram Panchayats still lack basic computing infrastructure despite the expansion of digital governance platforms

📍 About DAANVEER
✅ Full Form: Daan + Veer (Philanthropic Hero)
✅ Tagline: “Give Back to Your Village”
✅ Nodal Ministry: Ministry of Panchayati Raj
✅ Developed in collaboration with National Informatics Centre (NIC) and DigiHaat
✅ Accessible through the Meri Panchayat mobile application
✅ Open to citizens, organisations and the Indian diaspora
✅ Entirely voluntary and not a government levy or CSR mandate

📍 How it Works
✅ Donor selects an eligible Gram Panchayat through the Meri Panchayat App
✅ Chooses a pre-approved computer bundle on DigiHaat
✅ Delivery and installation are digitally tracked
✅ Donor receives a Digital Certificate of Appreciation after successful installation

📍 Key Features
✅ Standardised and quality-verified computer bundles
✅ State-specific technical specifications
✅ Transparent end-to-end digital tracking
✅ Paperless and technology-enabled donation process

📍 Significance
✅ Strengthens digital infrastructure at the grassroots
✅ Promotes citizen participation in local governance
✅ Supports effective implementation of digital Panchayat platforms
✅ Revives India’s tradition of community participation (Shramdaan) through technology

📍 Challenges
✅ Hardware alone cannot bridge the digital divide without electricity, broadband connectivity (BharatNet) and trained personnel
✅ Voluntary donations may favour wealthier Gram Panchayats with stronger diaspora networks
✅ No clear mechanism for maintenance or replacement of donated equipment
✅ Voluntary contributions alone cannot meet the digital needs of 2.5 lakh Gram Panchayats

📍 Related Digital Platforms
✅ e-GramSwaraj – Planning, accounting and fund tracking
✅ AuditOnline – Digital social audit management
✅ Sabha Saar – Digital repository of Gram Sabha proceedings
✅ Gram Manchitra – GIS-based spatial planning
✅ Meri Panchayat App – Citizen interface for Panchayat services
✅ DigiHaat – Procurement backend for DAANVEER

📍 Mains Question
“India’s Panchayati Raj Institutions have been at the centre of digital governance reforms, yet the digital divide at the grassroots persists. Critically evaluate the DAANVEER initiative as a model of citizen participation in strengthening local self-governance.” (15 Marks, 250 Words)

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🔆 LIGO-India (Laser Interferometer Gravitational-Wave Observatory)

📍 Latest Update (Feb 2026)
✅ Larsen & Toubro (L&T) won the contract from Department of Atomic Energy (DAE) to construct LIGO-India at Aundha, Hingoli district, Maharashtra.

🔆 About LIGO

📍 Objective
✅ Detect Gravitational Waves — ripples in space-time caused by violent cosmic events like black hole mergers or neutron star collisions.
✅ Predicted by Albert Einstein in 1916 (General Theory of Relativity).
✅ First directly detected in 2015 at LIGO Laboratory, USA.

📍 What are Gravitational Waves?
✅ Travel at the speed of light.
✅ Carry information about their cosmic origins and the nature of gravity.
✅ Generated by extreme astrophysical events (e.g., binary black holes).

📍 Principle of Working (Laser Interferometry)
✅ Uses twin 4-km-long L-shaped vacuum tunnels.
✅ A laser beam is split → reflected by mirrors → recombined.
✅ Passing waves cause minute stretching/compression of space, creating an interference pattern.
✅ Detects changes smaller than a proton’s diameter.

🔆 LIGO-India

📍 Approval & Collaboration
✅ Approved by Government of India (2016).
✅ Jointly developed by DAE + DST.
✅ In collaboration with National Science Foundation, USA (MoU).

📍 Indian Partner Institutes
✅ Institute of Plasma Research
✅ Inter-University Centre for Astronomy and Astrophysics
✅ Raja Ramanna Centre for Advanced Technology

📍 Global Network Members
✅ LIGO Laboratory (USA)
✅ Virgo Collaboration (Italy)
✅ KAGRA (Japan)
➡ LIGO-India will strengthen global triangulation & source localization.

📍 Significance for India
✅ 🔬 Astrophysics Leadership – Entry into frontier gravitational research.
✅ ⚙ Technological Boost – Precision engineering, lasers, vacuum tech.
✅ 🏭 Industrial Collaboration – Role of Indian firms like L&T.
✅ 🌍 Scientific Diplomacy – Enhances global prestige.

📝 UPSC Mains Angle (GS3 – Science & Tech)
“Discuss the significance of LIGO-India in advancing India’s scientific capabilities and international scientific collaboration.”

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Land degradation and desertification pose an enormous risk not just to India’s ecology but to its macro-economic aspirations. Discuss the drivers of this crisis and evaluate the effectiveness of institutional measures taken by the government. Suggest a way forward. (15 Marks | 250 Words)

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