indigenisation – Air Marshal's Perspective

July 30, 2026

833: THE BATTLE FOR THRUST: INDIA’S QUEST FOR INDIGENOUS JET ENGINES

Article published in the Aug 26 edition of the “Life Of Soldier” Magazine.

The commercial discussions between GE Aerospace and India for the F414 have hit a serious roadblock. The per-unit cost has reportedly nearly tripled, from an initial estimate of approximately ₹70-80 crore to well over ₹200 crore. Moreover, the critical technologies, including the Full Authority Digital Engine Control system, are reported to remain under GE’s control. The Tejas Mk-2, the AMCA, and the Twin Engine Deck-Based Fighter have all been built around the F414’s specific dimensions, meaning any switch now entails a structural redesign, new air-intake engineering, and full recertification that takes years.

Only a small group of countries, including the United States, Russia, France, and the United Kingdom, possesses the technological capability to independently design and manufacture advanced military and civilian aircraft engines. Despite decades of effort, India remains dependent on foreign suppliers for fighter aircraft engines. This dependence represents perhaps the single most important technological vulnerability in India’s aerospace ecosystem. The Kaveri programme, which was meant to resolve the problem, did not do so. Understanding why it did not and what it would genuinely take to do so is the most important defence-industrial question India currently faces.

Engine Development Challenges. Aero engines are among the most sophisticated engineering systems ever developed. Modern jet engines operate under extreme temperatures and pressures while delivering high efficiency, reliability, and performance. Developing a high-performance military turbofan is arguably the most complex engineering challenge in modern industry. It requires the precise synchronisation of thermodynamics, fluid mechanics, advanced metallurgy, and digital controls. The engine must operate reliably under extreme conditions, with turbine entry temperatures that frequently exceed the melting points of its components. The four technologies that need to be focused on are: –

- Advanced Hot-Section Metallurgy to manufacture single-crystal turbine blades.

- Thermal Barrier Coatings (TBC) to prevent advanced alloys from failing at temperatures exceeding 1,500°C.

- Aerothermal Design and Core Codes to design codes to predict airflow, flame stability, and thermal stress accurately, enabling independent modifications and derivative engine designs.

- Full Authority Digital Engine Control (FADEC) to manage everything from fuel metering to variable stator vanes in real-time.

Kaveri Experience

The Gas Turbine Research Establishment in Bengaluru began developing the Kaveri engine in the mid-1980s. The mandate was to develop an indigenous turbofan capable of producing around 80 kilonewtons of thrust with afterburner. The original completion target was 1996, which was later extended to 2009. The engine did not achieve the required thrust-to-weight ratio. Development challenges included compressor efficiency, turbine blade durability, excessive engine weight, and inadequate afterburner performance. The programme reached a development plateau with a thrust level of approximately 73 kilonewtons. It was formally decoupled from the Tejas programme in 2008. The GE F404 was adopted as the primary powerplant.

But the Kaveri program was not a total waste. It produced important assets, including indigenous FADEC work, certified materials, accumulated engine test hours, and experience in integration and high-altitude testing. It created India’s first indigenous knowledge base in turbine engine design. It established testing facilities, trained engineers, developed computational design capability, and exposed India’s scientific community to the realities of high-performance propulsion engineering. Recent progress includes continued development of Kaveri derivatives for unmanned combat aerial vehicles (UCAVs) such as the Ghatak.

Effect of Technology Denial. Western nations imposed severe restrictions on sensitive technology transfer after India’s nuclear tests. These adversely affected India’s engine development challenges. India’s nuclear tests in 1998, in particular, triggered a period of comprehensive sanctions that froze several cooperative technology relationships at a particularly sensitive moment in the Kaveri programme’s development. Later, India was admitted to the Missile Technology Control Regime in 2016 and the Wassenaar Arrangement in the same year, and to the Australia Group and the Nuclear Suppliers Group waiver arrangement in earlier periods. These admissions improved India’s position as a purchaser of controlled technology. They did not automatically transfer the knowledge embedded in the manufacturing processes. This reflects a broader reality: countries rarely transfer technologies that determine long-term military competitiveness.

Global Approach

Nations capable of manufacturing aircraft engines show that successful aero-engine ecosystems rely on long-term national commitment. The US combined wartime demand, government-funded research, a competitive industry, and strong collaborations among government, academia, industry, and military to build a competitive engine sector. France also followed a state-led approach. It regarded engine development as a strategic sovereign task and ensured programme continuity and the preservation of knowledge. The UK focused on excellence in materials science and turbine engineering. The government, on the other hand, helped to prevent setbacks such as Rolls-Royce’s near-collapse. Russia gave priority to self-reliance. It incurred high costs to maintain specialised design bureaus and industrial infrastructure. It took China 40 years to progress from the WS-10 to the WS-15 engines. China’s perseverance highlights the importance of continued investment, iterative learning, and constant policy support. Analysis of these approaches reveals four universal lessons: –

- National self-sufficiency in propulsion is vital for national security.
- Institutional continuity & state support are essential to preserve knowledge and retain institutional expertise.
- Strategic Patience and project funding are required to achieve sovereignty despite slow initial results.
- Synergistic ecosystems demand long-term partnerships among government, academia, R&D establishments, and private manufacturers.

Renewed Indian Effort: National Aero Engine Mission

Forty-four years after the Gas Turbine Research Establishment first began serious work on what became the Kaveri engine, India has launched something with a different institutional character. The National Aero Engine Mission was formalised in February 2026. NAEM is not another laboratory programme with an open-ended timeline. It is an organisational structure designed to coordinate amongst the agencies involved in aircraft engine development and manufacture. The ₹61,000-crore initiative aims to achieve self-reliance (Aatmanirbharta) in the design, development, and manufacturing of high-thrust fighter jet engines. Driven by the Gas Turbine Research Establishment, the mission aims to break decades of import dependence by 2035.

Task. The task of NAEM is cut out. Develop a defined product with a hard operational deadline, not a research thrust target, or a demonstrator. An engine with a specified performance envelope, a specified platform application, and a date by which it must be ready for flight testing, with the aircraft programme formally committed to using it. The Tejas Mk-2 and the AMCA are the obvious candidates. The AMCA, in particular, intended to be India’s first fifth-generation fighter, will require an engine in the 110-kilonewton class. If that engine is not developed indigenously, India will be forced to import the powerplant for its most strategically sensitive aircraft programme, thereby recreating exactly the dependency the AMCA is meant to resolve.

Aims and Objectives of the National Aero Engine Mission. The central aim of the mission is to establish India as an independent aero engine development nation. Key objectives include: –

- Development of High-Thrust Engines. Co-develop a 120 kN-class engine (scalable to 130–140 kN) primarily for the AMCA Mk2 and future platforms. This engine would enable supercruise, stealth capabilities, high manoeuvrability, and an enhanced payload.

- Indigenous Manufacturing Ecosystem. Establish domestic capabilities for design, testing, certification, and large-scale production.

- Testing Infrastructure. The mission would effectuate the timely establishment of the National Aero Engine Test Complex (NAETC) to provide comprehensive ground and high-altitude testing.

- Human Resources and Skills. Create thousands of specialised jobs in aerospace engineering, materials science, and advanced manufacturing. It will foster a robust talent pipeline through collaborations with academic institutions.

- Dual-Use Technologies. Advances in high-temperature composites, coatings, and alloys will benefit civil aviation, power generation, and space sectors. India’s booming civil aviation market stands to gain significantly.

Success Imperatives.

Private sector participation with real accountability is essential to aerospace manufacturing. The Defence Research and Development Organisation’s laboratory structure has proven ill-suited to the iterative, commercially pressured development process required for engine production. A future engine program should integrate advanced manufacturing companies, startups, and research universities. What is needed is a structure in which one or more private sector aerospace companies, properly capitalised and with access to GTRE’s existing knowledge base, take on programme risk alongside the government. This is not a privatisation argument. It is an argument about what kinds of institutional incentives actually produce functional hardware.

A materials and manufacturing foundation is the need of the hour. The turbine blade problem cannot be solved by importing blades and assembling engines around them. India needs domestic capability in single-crystal casting, thermal barrier coatings, and the high-temperature alloy supply chain. Several Indian private-sector metallurgical companies have demonstrated capabilities in these areas.

Technology induction is required to speed up the development process. Structured access to technology through existing partnerships seems to be the only way out. Licence production is not the answer; knowledge of manufacturing methods needs to be shared. Companies such as Rolls-Royce, GE Aviation, Safran, and Pratt & Whitney have their own commercial and contractual reasons for not sharing the deepest layers of their process knowledge. The negotiation of that distinction matters enormously and should be a specific, explicitly stated objective of the technology transfer agreement rather than an outcome hoped for as a byproduct. It won’t be easy, and it won’t be cheap.

Concluding Thoughts

India’s aerospace ambitions cannot be fulfilled without mastering aero engine technology. An aero engine takes between fifteen and twenty-five years to move from concept to operational maturity, even under favourable conditions, and considerably longer under unfavourable ones. However, the engine problem is not unsolvable. It is genuinely hard, takes a long time, and requires sustained institutional commitment. France, Britain, the United States and Russia have solved it. China is in the process of solving it.

The success of the National Aero Engine Mission is a non-negotiable national priority. It needs to become India’s next successful strategic technology initiative through dedication, perseverance and institutional support. The Mission will not be judged by its initial test results or its early industry partnerships. It will be judged, a decade or more from now, by whether an Indian fighter is flying on an engine fully owned by India.

Please Add Value to the write-up with your views on the subject.

For regular updates, please register your email here:-

Subscribe

References and credits

To all the online sites and channels.

Pics Courtesy: Internet

Disclaimer:

Information and data included in the blog are for educational & non-commercial purposes only and have been carefully adapted, excerpted, or edited from reliable and accurate sources. All copyrighted material belongs to the respective owners and is provided only for wider dissemination.

References: –

India Today. “India-US GE F414 AMCA fighter jet engine deal in limbo amid nearly 300 per cent increase in cost”. (24 Jun 2026). https://www.indiatoday.in/

New Indian Express. “AMCA engine deal hits roadblock over GE’s threefold price demand”. (24 Jun 2026). https://www.newindianexpress.com/

Times of India. “You have 5-7 years to develop 6th gen aero engines: Rajnath’s challenge for DRDO scientists”. (17 Feb 26). https://timesofindia.indiatimes.com/

Defence Research and Development Organisation. (n.d.). “Gas Turbine Research Establishment (GTRE)”. Ministry of Defence, Government of India. https://www.drdo.gov.in/labs-establishment/gtre

Ministry of Defence. “Tie-up processes under the National Aero Engine Mission launched”. Press Information Bureau. (2026, February 16). https://pib.gov.in/

Defence Metallurgical Research Laboratory. Reports on single-crystal turbine blade technology and near-isothermal forging. DRDO Publications.(2021–2026).

Rao, R. S. Why are engines the bottleneck in fighter jet manufacturing in India? Eurasia Review. (2026). https://www.eurasiareview.com/

Gunston, B. “The development of jet and turbine aero engines” (4th ed.). Haynes Publishing.(2006).

Mattingly, J. D. (2006). “Elements of propulsion: Gas turbines and rockets” (2nd ed.). American Institute of Aeronautics and Astronautics. https://doi.org/10.2514/4.861768

Sarkar, S. (Ed.). “India’s defence industry: Challenges and opportunities”. Routledge. (2020).

July 15, 2026

829: Podcast with Abhinay

Had an interesting chat with Abhinay of Prabhasakshi News Channel.

We talked about: –

New balance of air power in the world today.
Drones and Fighter aircraft.
Different philosophies of Russia’s Su-57 and the U.S.’s F-35.
Future of air warfare
Timelines of indigenous fifth-generation aircraft. (AMCA).
Role of AI in air warfare.
Loyal Wingman drones.
F-35 / Su-57 / AMCA.
Aircraft engine technology development and production.
Export of fighter jets as a geopolitical tool and a source of dependency.
India’s greatest achievements and biggest challenges in terms of defence self-reliance.
Indian Air Force of 2040.
One trend in air warfare over the next 20 years.
Balakot Operations.

Value additions are most welcome.

For regular updates, please register your email here:-

Subscribe

References and credits

To all the online sites and channels.

Pics Courtesy: Internet

Disclaimer:

June 29, 2026June 29, 2026

826: NETRA GETS ITS WINGS

Provided video bytes and inputs on the subject to TV 9

On 25 June 2026, the Defence Research and Development Organisation formally conveyed Final Operational Clearance for the Netra Airborne Early Warning and Control system to the Indian Air Force at the Centre for Airborne Systems in Bengaluru. The occasion was noted in official circles with measured satisfaction. It deserved rather more. Nine years elapsed between Initial Operational Clearance in 2017 and this milestone.

India has operated the Netra on Embraer ERJ-145 platforms for several years. The aircraft flew in support of operations following the 2019 Balakot strikes and has participated in operational exercises that tested its ability to sustain surveillance in contested electromagnetic environments.

FOC represents the stage at which a developmental platform relinquishes its limitations and transforms into a fully operational instrument of air power. It signifies unrestricted deployment and comprehensive integration within the Indian Air Force (IAF) operational frameworks.

The Netra, developed indigenously, allows India to control the radar parameters, mission software, ESM configurations, and data link protocols. In an era when adversary electronic warfare suites are specifically engineered to exploit known platform signatures and communication patterns, this freedom of customisation is not a convenience; it is a strategic necessity and an asset.

Capabilities

The Netra’s Active Electronically Scanned Array radar, mounted in a dorsal fairing on the ERJ-145, reportedly provides 240-degree surveillance coverage with detection ranges ranging from 250 to 375 kilometres, depending on the target’s radar cross-section. Operating at altitude, it overcomes the fundamental limitation of ground-based radar (the curvature of the earth and the masking effects of terrain). A cruise missile flying at 30 metres above the surface of the earth will be invisible to a ground radar station 150 kilometres away. It won’t be invisible to Netra.

This capability matters enormously in the threat environment India now faces. The conflicts in Ukraine and the Middle East have demonstrated that cruise missiles and drone swarms are no longer the preserve of great powers. Pakistan has invested substantially in loitering munitions and cruise missile capabilities. China’s inventory of precision standoff weapons is extensive and growing. India’s adversaries have, in effect, made low-observable, low-altitude attack the standard opening move of any escalatory exchange.

Netra’s signal processing architecture is designed to address this. Advanced moving-target indication algorithms filter out ground clutter and extract the signatures of slow-moving, low-radar-cross-section targets (armed UAVs and loitering munitions) from the background noise that defeats simpler systems. This is not a straightforward technical problem. Ground clutter at low altitude is dense and variable. The ability to distinguish a drone flying at 200 metres from weather returns, terrain features, and electronic noise is what separates a capable AEW system from an expensive radar platform.

The Force Multiplication Calculus

An airborne early warning platform does not shoot anything down. Its value lies in compressing decision cycles across the joint force. Netra fuses data from its primary radar, secondary surveillance radar, and ESM suite. She transmits a real-time tactical picture via secure data links to IAF fighters, surface-to-air missile batteries, and the Integrated Air Command and Control System. A pilot, upon receiving that picture, knows where the threat is, what it is, and which other friendly assets are addressing it before the threat enters his own sensor range. An Akash battery operator is cued to an incoming cruise missile while it is still 40 kilometres away, rather than learning of it from the engagement radar at 10km.

This compression of the sensor-to-shooter timeline is the operative measure of Netra’s contribution. In a high-tempo, multi-axis conflict, the difference between a twelve-minute warning and a four-minute warning is the difference between a coordinated intercept and a reactive scramble. FOC gives the IAF assurance that Netra will perform this function at full capacity, without degradation due to developmental limitations, during sustained combat operations.

The Expansion Imperative

India currently operates three Netra aircraft. Against a two-front operational requirement spanning the northern and western theatres simultaneously, three platforms represent a starting point, not a final solution. Sustained AEW coverage over two active fronts demands continuous on-station presence, which in turn demands rotation cycles and adequate reserve. Three aircraft cannot credibly provide this. The FOC must therefore be viewed as the formal beginning of a programme of scale.

Achieving FOC for the Mk-1 accelerates the case for funding and fielding these variants. It demonstrates to the defence acquisition apparatus that DRDO can deliver a complex, software-intensive, operationally demanding platform to the IAF’s qualitative requirements. The developmental pathway is defined. The Netra Mk-1A incorporates enhanced processing for low-observable target detection. The Mk-2, proposed on the Airbus A321 platform, would carry a larger radar array with 300 to 360-degree coverage, substantially increasing both the surveillance footprint and the battle management capacity of each airborne asset.

The Indigenisation Dividend

India’s defence self-reliance agenda has produced a mixed record. In some domains, the trajectory has been positive even when timelines have slipped. In others, dependence on imported platforms has persisted despite stated policy intent. Netra’s FOC represents a genuine indigenisation success in one of the most technically demanding categories of military aviation. These include integration of complex sensor fusion, real-time data processing, and secure communications in an airborne environment. The significance extends beyond the platform itself. The Centre for Airborne Systems has, over two decades, built the engineering and systems integration competence required to deliver and sustain an AEW capability.

Concluding Thoughts

The FOC for Netra is strategically significant for three reasons. First, it removes the last formal constraints on the full operational deployment of an indigenous airborne early warning platform. Second, it positions India to accelerate the Mk-1A and Mk-2 variants at a moment when the regional threat environment makes expanded AEW capacity an operational necessity rather than a procurement aspiration. Third, it validates the DRDO-industry pathway for delivering advanced airborne systems and strengthens the argument for funding the next generation of indigenous surveillance and battle management platforms.

Modern air power is, at its core, an information contest. The side that sees first, identifies first, and coordinates first holds the initiative. Netra, fully cleared and operationally deployed, moves India measurably closer to holding that initiative over the contested airspace that will define any future conflict with regional adversaries.

Please Add Value to the write-up with your views on the subject.

For regular updates, please register your email here:-

Subscribe

References and credits

To all the online sites and channels.

Pics Courtesy: Internet

Disclaimer: