India records 1,200-second scramjet test

India’s Defence Research and Development Organisation said on May 9 that its Hyderabad-based Defence Research and Development Laboratory completed a long-duration ground test of an actively cooled full-scale scramjet combustor for a hypersonic missile program. The agency said the run lasted more than 1,200 seconds at its Scramjet Connect Pipe Test facility in Hyderabad. The test followed a January trial of the same full-scale combustor that ran for more than 700 seconds, according to India’s Press Information Bureau. DRDO described the latest result as part of its work on long-duration air-breathing hypersonic propulsion. ### Why does a 1,200-second run matter more than a headline speed number? A 1,200-second run matters because the May 9 event was a sustained ground test of the combustor rather than a brief ignition demonstration. The Press Information Bureau said the test involved an “Actively Cooled Full Scale Scramjet Combustor” and was conducted at the Scramjet Connect Pipe Test facility, indicating a focus on duration and stable operation under simulated conditions rather than a one-off burst. (pib.gov.in) DRDO’s own hypersonic technology page lists “Air Breathing Engine - Active cooled scramjet engine” and “Long duration Scramjet Propulsion system for hypersonic vehicles” among technologies assigned to DRDL. That public program language aligns the recent tests with endurance and propulsion-system development, not only peak-velocity claims. ### How does this compare with India’s earlier scramjet tests? (pib.gov.in) On January 9, DRDO said DRDL had completed a long-duration ground test of its actively cooled full-scale scramjet combustor for more than 12 minutes at the same Hyderabad facility. The May 9 release said the new run built on that earlier full-scale result and extended runtime to more than 1,200 seconds. On April 25, 2025, DRDO said DRDL had also completed a subscale active-cooled scramjet combustor ground test for more than 1,000 seconds at what it then called the Scramjet Connect Test Facility in Hyderabad. (drdo.gov.in) That release said the 2025 work followed a 120-second test in January 2025 and would help prepare for “full scale flight worthy combustor testing.” ### What exactly did DRDO say it tested in Hyderabad? (pib.gov.in) The Press Information Bureau said the hardware tested on May 9 was an “Actively Cooled Full Scale Scramjet Combustor” designed and developed by DRDL and realized by industry partners. The test took place at the Scramjet Connect Pipe Test facility in Hyderabad, which DRDO uses for long-duration ground runs tied to hypersonic propulsion work. (pib.gov.in) DRDL is one of DRDO’s missile-focused laboratories in Hyderabad. A DRDO recruitment notice published on May 13 described DRDL as a premier research laboratory engaged in research and development of missile systems for the Indian armed forces. ### Does this mean India has fielded a hypersonic missile? DRDO’s May 9 statement did not say India had fielded an operational hypersonic missile. (pib.gov.in) The release said the test was a milestone in the “development of Hypersonic Missiles” and identified the event as a ground test of a combustor, not a full flight trial or induction announcement. The April 2025 government release was also explicit that the subscale test would help prepare the system for “full scale flight worthy combustor testing.” That wording indicates the government has publicly presented these events as propulsion-development steps inside a larger program sequence. (drdo.gov.in) ### What comes next in the public record? The clearest next step in the public record is further full-scale and flight-worthy combustor work. (pib.gov.in) DRDO said in April 2025 that the subscale system would soon be ready for full-scale flight-worthy combustor testing, and the January and May 2026 releases show the agency continuing to extend full-scale ground-test duration at Hyderabad. As of May 16, 2026, DRDO has publicly tied the program to DRDL in Hyderabad, the Scramjet Connect Pipe Test facility, and unnamed industry partners involved in realizing the combustor hardware. (pib.gov.in) Those are the named participants and location to watch for the next official update from India’s Ministry of Defence or DRDO. (pib.gov.in)