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{{Infobox laboratory|name=Defence Research and Development Laboratory|established=June 1961|address=[[Kanchanbagh]]<br /> [[Hyderabad]]<br /> 500058|operating_agency=[[Defence Research and Development Organization]]}}
'''Defence Research and Development Laboratory''' ('''DRDL''') is an Indian missile development laboratory, part of the [[Defence Research and Development Organisation|Defence Research and Development Organization]] (DRDO). Their charter is centered on the design, development, and flight evaluation of various types of missile systems for the [[Indian armed forces]].
== History ==▼
In 1958, the Indian government
Being a design and development house for missile-based weapon systems needed for tactical applications across multiple platforms is the organization's objective. Its aim is to create the cutting-edge technology and infrastructure needed for various class of missiles. Give the production agency the required technology for the guided missiles manufacturing.<ref name="drdl-vm">{{Cite web |title=DRDL - Homepage {{!}} Defence Research & Development Laboratory DRDO DRDO |url=http://drdo.gov.in/drdo/labs1/DRDL/English/indexnew.jsp?pg=homepage.jsp |archive-url=http://web.archive.org/web/20181111173658/https://drdo.gov.in/drdo/labs1/DRDL/English/indexnew.jsp?pg=homepage.jsp |archive-date=2018-11-11 |access-date=2025-04-29 |website=drdo.gov.in}}</ref>
The DRDO launched [[Project Devil]] and [[Project Valiant]] to reverse engineer Soviet-origin guided missiles and create intercontinental ballistic missiles, respectively, which prompted the DRDL to begin developing missile guidance systems. Although both initiatives were abandoned before they were successful, the work completed aided DRDL in increasing its capacity. Afterwards, this assisted DRDL in leading the [[Integrated Guided Missile Development Programme|Integrated Guided Missiles Development Program]] (IGMDP). By 2011, India started producing cutting-edge components in-house and was fully independent in end-to-end missile development.<ref name=":0" />
▲== History ==
== Products ==
▲In 1958, the government of India constituted a team of Indian engineers, mostly from the [[Indian Ordnance Factories]]- called the '''Special Weapons Development Team''' - to research guided missile weapons development. It was founded by [[S. P. Chakravarti]], the father of Electronics and Telecommunication engineering in India, who also founded DLRL and LRDE.<ref>{{cite journal|url=https://in.booksc.eu/book/53133498/850b31 |title=Prof. S.P. Chakravarti (1904–1981) |author=Mitra, S.N. |journal=IETE Journal of Research |volume=28 |issue=8 |date=August 1982|pages=385–390 |doi=10.1080/03772063.1982.11452762 }}</ref> This team was later expanded into DRDL, a full-fledged laboratory, in June 1961, at the campus of Defence Science Centre, Delhi.<ref name="drdl-about">{{Cite web |url=http://drdo.gov.in/drdo/labs/DRDL/English/index.jsp?pg=HistoricalBG.jsp |title=Historical Background |website=Defence Research and Development Laboratory |access-date=2012-05-23 |archive-url=https://web.archive.org/web/20120210112328/http://drdo.gov.in/drdo/labs/DRDL/English/index.jsp?pg=HistoricalBG.jsp |archive-date=2012-02-10 }}</ref> It later shifted to Hyderabad after the state government granted them the former Nizam's army barracks. This was the genesis of the '''Defence Research and Development Laboratory (DRDL)''',<ref>{{cite web |url=http://www.frontlineonnet.com/fl2603/stories/20090213260309700.htm |title=Missile shield |access-date=2012-05-31 |archive-url=https://web.archive.org/web/20130207034302/http://www.frontlineonnet.com/fl2603/stories/20090213260309700.htm |archive-date=2013-02-07 }}</ref> under the [[Defence Research and Development Organisation]] (DRDO).
Weapon systems developed by DRDL include:-<ref>{{Cite web |title=Products {{!}} Defence Research and Development Organisation - DRDO, Ministry of Defence, Government of India |url=https://www.drdo.gov.in/drdo/technology-cluster-links/labs-products/182 |access-date=2024-05-05 |website=www.drdo.gov.in}}</ref>
*[[Akash (missile)|Akash]] [[surface-to-air missile]]
*[[Astra (missile)|Astra]] [[air-to-air missile]]
*[[Nag (missile)|Nag]] [[anti-tank guided missile]]
*[[QRSAM]] [[surface-to-air missile]]
=== Hypersonic technology ===
[[File:Scramjet_engine_for_Hypersonic_Cruise_Missile.jpg|thumb|Active Cooled Scramjet Subscale Combustor ground testing in April 2025]]
A 120-second ground test of an Active Cooled [[Scramjet]] Subscale Combustor for next-generation missiles was conducted by the DRDL at Scramjet Connect Test Facility at [[Hyderabad]] on 21 January 2025.<ref>{{cite news |date=21 January 2025 |title=DRDO conducts Scramjet Engine Ground Test |url=https://pib.gov.in/PressReleasePage.aspx?PRID=2094886 |access-date=21 January 2025 |publisher=Press Information Bureau |agency=Ministry of Defence, Government of India.}}</ref><ref>{{Cite web |last=Philip |first=Snehesh Alex |date=2025-01-21 |title=Boost for India as DRDO successfully conducts scramjet engine ground test for hypersonic missiles |url=https://theprint.in/defence/boost-for-india-as-drdo-successfully-conducts-scramjet-engine-ground-test-for-hypersonic-missiles/2455926/ |access-date=2025-01-21 |website=ThePrint |language=en-US}}</ref> The test showed stable combustion and successful ignition. Together with the [[Department of Science and Technology (India)|Department of Science and Technology]] and the private sector, DRDL has taken the lead in developing an improved ceramic [[thermal barrier coating]] (TBC), endothermic scramjet fuel, and a long-duration scramjet engine. A novel flame stabilization method was added to the scramjet combustor, which maintains a constant flame inside the combustor at air speeds greater than 1.5 km/s. In addition to improving cooling, the endothermic fuel shortens ignition times. With its excellent temperature resistance, the cutting-edge ceramic TBC can function above the melting point of steel.<ref>{{Cite web |last=Ray |first=Kalyan |date=21 January 2025 |title=DRDO achieves milestone on scramjet engines needed for hypersonic missiles |url=https://www.deccanherald.com/india/drdo-achieves-milestone-on-scramjet-engines-needed-for-hypersonic-missiles-3366484 |access-date=2025-01-21 |website=Deccan Herald |language=en}}</ref><ref>{{Cite web |last1=Sharma |first1=Shivani |last2=Negi |first2=Manjeet |date=2025-01-21 |title=India achieves milestone in hypersonic technology with 1st scramjet test success |url=https://www.indiatoday.in/india/story/india-achieves-milestone-in-hypersonic-technology-first-scramjet-test-success-2668210-2025-01-21 |access-date=2025-01-21 |website=India Today |language=en}}</ref>
Another ground test of the scramjet was conducted on 25 April 2025, for a longer duration of over 1,000 seconds in the Hyderabad facility. With this, the system would be ready for full scale flight testing.<ref>{{cite news |date=25 April 2025 |title=DRDO achieves significant milestone in Scramjet Engine Development |url=https://pib.gov.in/PressReleasePage.aspx?PRID=2124415 |access-date=25 April 2025 |publisher=Press Information Bureau |agency=Ministry of Defence, Government of India.}}</ref>
== References ==
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