DRDL runs scramjet combustor for over 1,200 seconds
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DRDO’s Defence Research & Development Laboratory ran its actively cooled full-scale scramjet combustor for over 1,200 seconds at the Scramjet Connect Pipe Test facility in Hyderabad on 9 May 2026. This builds on a test of over 700 seconds in January. It uses an indigenous liquid hydrocarbon endothermic fuel and is a base for hypersonic cruise missiles.
- Test
- 9 May 2026; over 1,200 seconds run time
- Earlier
- over 700 seconds in January 2026
- Lab
- DRDL (DRDO), Hyderabad
- Facility
- Scramjet Connect Pipe Test (SCPT)
- Tech
- actively cooled combustor; liquid hydrocarbon endothermic fuel; thermal barrier coating
- Goal
- Hypersonic Cruise Missile Development Program
DRDL’s long-duration scramjet combustor test: what happened?
A scramjet is an air-breathing engine that works at hypersonic speed. Keeping it burning for long is very hard, because the heat is extreme. Twenty minutes on the ground is a big step toward a hypersonic cruise missile.
- The combustor was designed by DRDL and made by industry partners.
- The test validated both the combustor design and the test facility.
What is a scramjet?
- A supersonic combustion ramjet: an air-breathing engine where air stays supersonic inside the combustor. The release calls it a supersonic air-breathing engine.
Why does DRDL’s long-duration scramjet combustor test matter?
- Defence: Path to hypersonic cruise missiles.
- Technology: Indigenous fuel and cooling know-how.
What can Prelims ask on DRDL’s long-duration scramjet combustor test?
- DRDL scramjet combustor: over 1,200 seconds on 9 May 2026 (earlier over 700 seconds).
- Uses indigenous liquid hydrocarbon endothermic fuel.
How to use this in Mains
- As per PIB (2026-05-09): DRDO's DRDL tested an actively cooled full-scale scramjet combustor for over 1,200 seconds, a milestone for hypersonic missiles.
- Hypersonic cruise missiles are hard to intercept; note the test in your defence technology list.
Quotable data pointDRDO's DRDL tested an actively cooled full-scale scramjet combustor for over 1,200 seconds, a milestone for hypersonic missiles.
PIB: Defence: scramjet test, 9 May 2026
Exam angle
Prelims: ramjet vs scramjet.
Practice MCQs
Original practice questions (not PYQs).
DRDL's May 2026 scramjet test used which kind of fuel?
Answer (c) & explanation
PIB (Defence), 9 May 2026.
Questions students ask about this
How long did the scramjet combustor run?
Over 1,200 seconds.
Where was it tested?
At the Scramjet Connect Pipe Test facility in Hyderabad.
Which programme does it support?
India's Hypersonic Cruise Missile Development Program.
Keep studying
Official source: PIB: Defence: scramjet test, 9 May 2026
facts from cited sources only; faculty review pending