DRDO’s Long-Duration Scramjet Test

On 9th January 2026, the Defence Research and Development Organisation (DRDO) achieved a major breakthrough in hypersonic missile technology by successfully conducting a long-duration ground test of its Actively Cooled Scramjet Full-Scale Combustor.

The test demonstrates India’s growing capability in advanced propulsion systems needed for sustained hypersonic flight and next-generation missile technologies.

Why is this Important?

Area	Significance
Hypersonic Speed	Hypersonic missiles travel at Mach 5+, or over 6,100 kmph, for sustained durations.
Propulsion Technology	Such speeds are achieved using scramjet, or supersonic combustion ramjet, engines.
Technical Challenge	Sustaining combustion and thermal stability for long durations is one of the hardest challenges in hypersonic technology.
Strategic Importance	Strengthens India’s capability in developing advanced hypersonic weapons and propulsion systems.

How is this a Step Forward?

Feature	Explanation
Extreme Conditions	Demonstrates India’s ability to handle extreme heat, pressure, and high-speed airflow conditions.
Hypersonic Weapons	Provides a technological foundation for future hypersonic weapon systems.
Difference from Ramjets	Conventional ramjets slow incoming air before combustion, while scramjets allow supersonic airflow throughout the engine.
Combustion Challenge	Combustion becomes more difficult in scramjets, but the design enables sustained hypersonic speeds.

PT Facts

Scramjet: Stands for Supersonic Combustion Ramjet.
Hypersonic Speed: Means speed greater than Mach 5.
Engine Design: Scramjet engines have no rotating compressor or turbine, unlike conventional jet engines.
Hypersonic Weapons: Difficult to intercept due to high speed and manoeuvrability.

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