What is the common examiner trap about Science & Tech in UPSC exams?

They may ask about the speed in km/h (6,100+) vs. Mach number (5+), or confuse 'scramjet' with 'ramjet' (which has subsonic combustion). They might also swap the collaborating department (DST) with another like ISRO or CSIR.

What should UPSC aspirants remember about Science & Tech for Prelims?

1. Target this Data: 1,200-second scramjet runtime (from 700 seconds) 2. Target this Nodal Body: Defence Research and Development Laboratory (DRDL), Hyderabad 3. Target this Technology: Indigenous liquid hydrocarbon endothermic fuel and ceramic Thermal Barrier Coating (TBC)

Science & TechnologyDefence

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News 4 of 19

DRDO Achieves 1,200-Second Scramjet Ground Test, Develops Indigenous Fuel and Thermal Barrier Coating

Q: Consider the following statements regarding the recent DRDO hypersonic technology test: 1. The test achieved a 1,200-second ground run for a scramjet combustor, improving upon a previous test of over 700 seconds. 2. The scramjet engine utilises a solid propellant fuel developed indigenously by ISRO. 3. A key achievement is the development of a Thermal Barrier Coating (TBC) capable of operating beyond the melting point of steel. Which of the statements given above is/are correct?

Both 1 and 3, Statement 1 is correct as per the article. Statement 2 is incorrect; the fuel is an indigenous liquid hydrocarbon endothermic fuel, not a solid propellant, and it was developed by DRDL with industry partners, not specifically by ISRO. Statement 3 is correct as the article mentions the TBC was developed to withstand extreme temperatures beyond steel's melting point.

Q: According to the news, what was the duration (in seconds) of the successful scramjet combustor ground test conducted by DRDO?

1,200 seconds, The article's headline and content clearly state that DRDO achieved a 1,200-second runtime. The 700-second option refers to the previous test conducted in January, making it a close distractor.

Q: What is a primary strategic advantage of hypersonic weapons, as indicated in the article?

They have the potential to defeat existing air defence systems of major military powers., The article directly states that 'Hypersonic weapons have the potential to beat existing air defence systems available with major military powers across the world...' This is their defining tactical and strategic advantage, enabling rapid, high-impact strikes.

Science & Tech Security & DefenceCORE

Target:UPSC GS-IIIMPSCSSC GATeachingPrelims HighMains HighStatic GK Link

10 May 2026

~2 min

Source: Indian Express

Key Data:1,200-second runtime700+ seconds (previous test)> Mach 5 (> 6,100 km/h)

Bodies:DRDODRDLMinistry of DefenceDepartment of Science and Technology (DST)

Practice MCQs from today's news ▸

~2 min · Quick mode

What This Article Covers

1.DRDO achieves 1,200-second runtime for its actively cooled scramjet combustor, a major improvement from the 700-second test in January.

2.The technology uses indigenous liquid hydrocarbon endothermic fuel and a high-temperature ceramic thermal barrier coating co-developed with DST.

3.The development is critical for hypersonic cruise missiles, capable of speeds exceeding Mach 5, which can penetrate existing air defence systems.

The Big Picture

Prelims · HighMains · High

DRDO's successful 1,200-second ground test of a scramjet combustor marks a significant leap in indigenous hypersonic cruise missile technology. The breakthrough involves a novel liquid hydrocarbon fuel and a ceramic thermal barrier coating, positioning India among a select group of nations developing weapons that can outpace modern air defence systems.

Exam Lens

Quick Exam Facts From News

Scramjet Runtime1,200 seconds

Previous Test Duration700+ seconds (January)

Hypersonic Speed> Mach 5 (> 6,100 km/h)

Test FacilityScramjet Connect Pipe Test (SCPT), Hyderabad

1-Minute Revision

›Scramjet Runtime: 1,200 seconds
›Previous Test Duration: 700+ seconds (January)
›Target this Data: 1,200-second scramjet runtime (from 700 seconds)
›Target this Nodal Body: Defence Research and Development Laboratory (DRDL), Hyderabad
›Target this Technology: Indigenous liquid hydrocarbon endothermic fuel and ceramic Thermal Barrier Coating (TBC)

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News Snapshot

🚀

Ground Test Milestone

DRDO validated a scramjet combustor for 1,200 seconds, a key step in mastering sustained hypersonic flight.

🛡️

Strategic Significance

Hypersonic weapons (Mach 5+) can defeat current air defence systems, making this a crucial strategic capability.

🧪

Indigenous Innovations

The breakthrough relies on a domestically developed liquid hydrocarbon fuel and a ceramic thermal barrier coating.

Detailed Analysis & Strategic Depth

Context / Background

Hypersonic technology is a frontier area in modern warfare, pursued by major powers like the US, Russia, and China. A scramjet (Supersonic Combustion Ramjet) engine is essential for sustained flight at speeds over Mach 5. India's DRDO has been incrementally testing this technology, with this 1,200-second test building on a 700-second test conducted earlier in the year.

Core Analysis & Implications

The test validates the design of an 'actively cooled' combustor, crucial for managing extreme heat. The indigenous fuel provides dual benefits of cooling and ignition ease. The ceramic Thermal Barrier Coating (TBC), developed with DST, can withstand temperatures beyond steel's melting point. This end-to-end indigenous development reduces foreign dependency and enhances strategic autonomy. Militarily, hypersonic cruise missiles compress an adversary's decision-making time and can penetrate layered air defence (like S-400).

Future Outlook / Way Forward

The next logical steps are flight tests of the integrated scramjet engine and, eventually, a complete hypersonic cruise missile prototype. Sustained development will require scaling up fuel production and advancing materials science for thermal management. This places India in the 'hypersonic club', potentially altering regional strategic equations and necessitating advancements in our own defensive countermeasures.

Key Facts at a Glance

Scramjet Runtime1,200 seconds

Previous Test Duration700+ seconds (January)

Hypersonic Speed> Mach 5 (> 6,100 km/h)

Test FacilityScramjet Connect Pipe Test (SCPT), Hyderabad

You've read the full analysis. Now test your understanding.

Practice exam-style questions based on this article.

Q1Static LinkageEasyUPSC, SSC

The Scramjet Connect Pipe Test (SCPT) facility, mentioned in the news, is located at which DRDO laboratory?

Q2Statement-basedHardUPSC

Consider the following statements regarding the recent DRDO hypersonic technology test:

1. The test achieved a 1,200-second ground run for a scramjet combustor, improving upon a previous test of over 700 seconds.

2. The scramjet engine utilises a solid propellant fuel developed indigenously by ISRO.

3. A key achievement is the development of a Thermal Barrier Coating (TBC) capable of operating beyond the melting point of steel.

Which of the statements given above is/are correct?

Q3Data-centricMediumUPSC, SSC, Banking

According to the news, what was the duration (in seconds) of the successful scramjet combustor ground test conducted by DRDO?

Q4Application/ImpactMediumUPSC, SSC

What is a primary strategic advantage of hypersonic weapons, as indicated in the article?

All 25 MCQs ▸

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DRDO Achieves 1,200-Second Scramjet Ground Test, Develops Indigenous Fuel and Thermal Barrier Coating

Exam Lens

Quick Exam Facts From News

1-Minute Revision

News Snapshot

Ground Test Milestone

Strategic Significance

Indigenous Innovations

Detailed Analysis & Strategic Depth

Context / Background

Core Analysis & Implications

Future Outlook / Way Forward

Prelims Flashpoints

Key Facts at a Glance