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{{Short description|Indian scientist}}
{{Use dmy dates|date=October 2018}}
{{Use Indian English|date=October 2018}}
{{Infobox person
| name = T. S. Prahlad
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| birth_date = 21 May 1940
| birth_place = India
| death_date =
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| occupation = Aerospace scientist
| yearsactive =
| known for = Aerodynamics, Aerospace Design
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| awards = [[Padma Shri]]<br>[[H K Firodia awards|H K Firodia Award]]<br>[[Indian Institute of Science|IISc]] Distinguished Alumni Award<br>[[Institution of Engineers (India)|IE]] Eminent Engineer Award
}}

'''Tumkur Seetharamaiah Prahlad''' (born 21 May 1940) is an Indian aerospace scientist and the former director of the [[National Aerospace Laboratories]] (NAL), [[Bengaluru]], known as a specialist in [[Aerodynamics]] and [[Aerospace Design]].<ref name="Prof. T. S. PRAHLAD">{{cite web | url=http://www.afmc.org.cn/Chairman10.htm | title=Prof. T. S. PRAHLAD | publisher=Asian Fluid Mechanics Committee | date=2015 | access-date=15 November 2015 | archive-date=17 November 2015 | archive-url=https://web.archive.org/web/20151117014852/http://www.afmc.org.cn/Chairman10.htm | url-status=dead }}</ref> His contributions are reported in Indian civil aircraft development programmes of Hansa and [[NAL Saras]] and light combat aircraft development programme.<ref name="Advisory Board">{{cite web | url=http://www.entiinnovations.com/advisoryboard.html | title=Advisory Board | publisher=Enti Innovations | date=2015 | access-date=15 November 2015}}</ref><ref name="SARAS Takes to the Skies">{{cite web | url=http://www.icast.org.in/news/2004/oct04/oct30sr.html | archive-url=https://web.archive.org/web/20151117063502/http://www.icast.org.in/news/2004/oct04/oct30sr.html | url-status=usurped | archive-date=17 November 2015 | title=SARAS Takes to the Skies | publisher=Science Reporter | date=October 2004 | access-date=15 November 2015}}</ref> The Government of India awarded him the civilian honour of the [[Padma Shri]] in 2004,<ref name="Padma Awards">{{cite web | url=http://mha.nic.in/sites/upload_files/mha/files/LST-PDAWD-2013.pdf | title=Padma Awards | publisher=Ministry of Home Affairs, Government of India | date=2015 | access-date=21 July 2015 | archive-date=15 October 2015 | archive-url=https://web.archive.org/web/20151015193758/http://mha.nic.in/sites/upload_files/mha/files/LST-PDAWD-2013.pdf | url-status=dead }}</ref> The same year, he received the [[H K Firodia awards|H. K. Firodia Award]] from H. K. Firodia Memorial Foundation.<ref name="Awards by Year">{{cite web | url=http://hkfmindq.org/awards_2.html | title=Awards by Year | publisher=H. K. Firodia Memorial Foundation | date=2015 | access-date=15 November 2015 | url-status=dead | archive-url=https://web.archive.org/web/20151117023035/http://hkfmindq.org/awards_2.html | archive-date=17 November 2015 }}</ref>

== Biography ==
[[File:HAL Saras.jpg|thumb|[[NAL Saras|Saras]] taking off]]
After graduating in mechanical engineering from the [[Indian Institute of Science]], Bengaluru (IISc), Prahlada continued his studies there to complete his master's degree in mechanical engineering and secured a doctoral degree (PhD) in aeronautical engineering.<ref name="Advisory Board" /> He started his career by joining [[Indian Space Research Organization]] (ISRO) and worked at [[Vikram Sarabhai Space Centre]], [[Thiruvananthapuram]] (VSSC), as the head of various divisions such as Aerodynamics Division, Aerospace Dynamics and Design Group, and the Flight Dynamics Group. During his tenure at VSSC, he was involved with development of such space programmes as [[SLV-3]], ASLV, [[PSLV]] and [[GSLV]]. Later he moved to the [[Aeronautical Development Agency]] of the [[Ministry of Defence (India)|Ministry of Defence]] where he served as the project director of Light Combat Aircraft development programme.<ref name="Advisory Board" />

In 1996, Prahlada joined the [[National Aerospace Laboratories]] (NAL) as its director<ref name="K N Raju greets his successor">{{cite web | url=http://www.nal.res.in/pdf/history/p121-128/p128.pdf | title=K N Raju greets his successor | publisher=National Aerospace Laboratories | date=1996 | access-date=15 November 2015}}</ref> when the civil aircraft programme of the organization was facing difficulties.<ref name="SARAS Takes to the Skies" /><ref name="First indigenous passenger aircraft Saras rolled out">{{cite web | url=http://articles.economictimes.indiatimes.com/2003-02-04/news/27537959_1_saras-national-aerospace-laboratories-first-prototype | archive-url=https://web.archive.org/web/20130716152512/http://articles.economictimes.indiatimes.com/2003-02-04/news/27537959_1_saras-national-aerospace-laboratories-first-prototype | url-status=dead | archive-date=16 July 2013 | title=First indigenous passenger aircraft Saras rolled out | publisher=Economic Times | date=4 February 2003 | access-date=15 November 2015}}</ref> With encouragement from [[Raghunath Anant Mashelkar]], then director general of the [[Council of Scientific and Industrial Research]] (CSIR), he revived the [[NAL Saras]] programme and obtained the approval of the Cabinet Committee on Economic Affairs in 1999.<ref name="SARAS Takes to the Skies" /> Under his leadership, which lasted till 2002, NAL is known to have developed its infrastructure and transformed into a cohesive unit.<ref name="About Us">{{cite web | url=http://www.nal.res.in/pages/pastdirectors.htm | title=About Us | publisher=National Aerospace Laboratories | date=2015 | access-date=15 November 2015}}</ref>

Prahlad, whose researches have been documented by several articles,<ref name="Numerical simulation of inviscid supersonic flow over a launch vehicle with strap-on boosters">{{cite journal | url=https://www.researchgate.net/publication/234219085 | title=Numerical simulation of inviscid supersonic flow over a launch vehicle with strap-on boosters |author1=K. P. Singh |author2=T. S. Prahlad |author3=S. M. Deshpande | journal=Indian Space Research Organization | year=1987 | volume=25 | doi=10.2514/6.1987-213 | bibcode=1987aiaa.meetV....S }}</ref><ref name="Turbulence">{{cite book | url=https://books.google.com/books?id=R5X_CAAAQBAJ&q=T.+S.+Prahlad&pg=PA105 | title=Turbulence | publisher=Springer Science & Business Media | editor=P. Bradshaw | year=2013 | pages=338 | isbn=9783662225684}}</ref> has participated in many scientific projects<ref name="Investigations of casing treatments with the aim of improving the stable operating range of a single-stage axial compressor subsonic">{{cite web | url=http://gepris.dfg.de/gepris/projekt/5341794 | title=Investigations of casing treatments with the aim of improving the stable operating range of a single-stage axial compressor subsonic | publisher=[[Universität der Bundeswehr München]] | date=2001 | access-date=15 November 2015}}</ref><ref name="Numerical Simulation of Unsteady Flows and Transition to Turbulence">{{cite book | url=https://books.google.com/books?id=Ab1LeKLXVNoC&q=T.+S.+Prahlad&pg=PA146 | title=Numerical Simulation of Unsteady Flows and Transition to Turbulence | publisher=[[Cambridge University Press]] | author=O. Pironneau | year=1992 | pages=146 of 516 | isbn=9780521416184}}</ref> and workshops<ref name="International Workshop on Surface Engineering and Coatings: June 25–30, 1998">{{cite book | url=https://books.google.com/books?id=-TvA0jCYkwMC&q=T.+S.+Prahlad&pg=PR11 | title=International Workshop on Surface Engineering and Coatings: June 25-30, 1998 | publisher=Allied Publishers | year=1999 | pages=468 | isbn=9788170239734}}</ref> and has delivered orations, including the ''[[Satish Dhawan]] Memorial Lecture'' of 2013.<ref name="Focus on aircraft development: Prahlad">{{cite web | url=http://www.newindianexpress.com/cities/bengaluru/Focus-on-aircraft-development-Prahlad/2013/09/24/article1800504.ece | archive-url=https://web.archive.org/web/20151117014905/http://www.newindianexpress.com/cities/bengaluru/Focus-on-aircraft-development-Prahlad/2013/09/24/article1800504.ece | url-status=dead | archive-date=17 November 2015 | title=Focus on aircraft development: Prahlad | publisher=Indian Express | date=24 September 2013 | access-date=15 November 2015}}</ref> He is the chairman of the Asian Fluid Mechanics Committee, an organization promoting advanced research in [[Fluid Mechanics]].<ref name="Prof. T. S. PRAHLAD" /> He is a Fellow of the [[Aeronautical Society of India]] (AeSI)<ref name="Prof. T. S. PRAHLAD" /> and the [[Indian National Academy of Engineering]] (INAE).<ref name="Search Of Fellows">{{cite web | url=http://inae.in/search-of-fellows/ | archive-url=https://web.archive.org/web/20150403030936/http://inae.in/search-of-fellows/ | url-status=dead | archive-date=2015-04-03 | title=Search Of Fellows | publisher=[[Indian National Academy of Engineering]] | date=2015 | access-date=15 November 2015 }}</ref> The Government of India awarded him the civilian honour of the [[Padma Shri]] in 2004<ref name="Padma Awards" /> and [[H K Firodia awards|H. K. Firodia Award]] of the H. K. Firodia Memorial Foundation also reached him the same year.<ref name="Awards by Year" /> Five years later, he received two more awards; the [[Indian Institute of Science]] Alumni Association honoured him with the ''2009 Distinguished Alumni Award''<ref name="Complete List of Distinguished Alumnus Awardees">{{cite web | url=http://www.iiscalumni.com/news-events/awards-achievements.htm | title=Complete List of Distinguished Alumnus Awardees | publisher=IISc Alumni | date=2015 | access-date=15 November 2015 | url-status=dead | archive-url=https://web.archive.org/web/20160528224000/http://iiscalumni.com/news-events/awards-achievements.htm | archive-date=28 May 2016 }}</ref> and he received the ''Eminent Engineer Award'' of the [[Institution of Engineers (India)|Institution of Engineers]].<ref name="Advisory Board" /> He continues to be associated with the National Aerospace Laboratories is its advisor{{citation needed|date=February 2020}} and lives in the south Indian city of [[Bengaluru]].<ref name="Prof. T. S. PRAHLAD" />

== See also ==
* [[NAL Saras]]
* [[National Aerospace Laboratories]]
{{portal|India|Science}}

== References ==
{{reflist}}

== External links ==
* {{cite web | url=https://www.youtube.com/watch?v=8z6lRmGfrfA | title=Padma Shri Dr T S Prahlad | publisher=Technology Innovation Productization | work=[[YouTube]] video | date=26 September 2013 | access-date=15 November 2015}}

{{2000s Padma Shri Award Recipients in Science & Engineering}}
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{{DEFAULTSORT:Prahlad, T. S.}}
[[Category:Recipients of the Padma Shri in science & engineering]]
[[Category:Living people]]
[[Category:1940 births]]
[[Category:Indian aerospace engineers]]
[[Category:Indian Institute of Science alumni]]
[[Category:ISRO people]]
[[Category:20th-century Indian engineers]]
[[Category:Indian mechanical engineers]]

T. S. Prahlad - Revision history

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