<?xml version="1.0"?>
<feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en">
	<id>https://en.bharatpedia.org/w/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=Aryan+Chaturvedi</id>
	<title>Bharatpedia - User contributions [en]</title>
	<link rel="self" type="application/atom+xml" href="https://en.bharatpedia.org/w/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=Aryan+Chaturvedi"/>
	<link rel="alternate" type="text/html" href="https://en.bharatpedia.org/wiki/Special:Contributions/Aryan_Chaturvedi"/>
	<updated>2026-07-28T17:18:28Z</updated>
	<subtitle>User contributions</subtitle>
	<generator>MediaWiki 1.43.6</generator>
	<entry>
		<id>https://en.bharatpedia.org/w/index.php?title=List_of_Indian_states_and_union_territories_by_GDP_(PPP)&amp;diff=432641</id>
		<title>List of Indian states and union territories by GDP (PPP)</title>
		<link rel="alternate" type="text/html" href="https://en.bharatpedia.org/w/index.php?title=List_of_Indian_states_and_union_territories_by_GDP_(PPP)&amp;diff=432641"/>
		<updated>2023-10-06T12:08:59Z</updated>

		<summary type="html">&lt;p&gt;Aryan Chaturvedi: Created page with &amp;#039;{{short description| Indian states by GDP (purchasing power parity)}} This is a &amp;#039;&amp;#039;&amp;#039;List of Indian states by GDP (purchasing power parity)&amp;#039;&amp;#039;&amp;#039;. == List == {{List of States of India}} {| Class=&amp;quot;wikitable sortable&amp;quot; |+&amp;#039;&amp;#039;&amp;#039;Indian States by GDP (Purchasing power parity)&amp;#039;&amp;#039;&amp;#039;&amp;lt;ref&amp;gt;{{cite web| url=http://statisticstimes.com/economy/gdp-of-indian-states.php|title=GDP of Indian states {{!}} Indian states GDP 2019 - StatisticsTimes.com|website=statisticstimes.com|access-da...&amp;#039;&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{About|GDP(purchasing power parity)|Indian states and Union Territories by GDP(PPP)}}&lt;br /&gt;
&lt;br /&gt;
{{short description| Indian states by GDP (purchasing power parity)}}&lt;br /&gt;
This is a list of [[States and union territories of India|Indian states and union territories]] by [[gross domestic product]] (GDP), compared using [[purchasing power parity]] (PPP).&lt;br /&gt;
&lt;br /&gt;
== List ==&lt;br /&gt;
{| Class=&amp;quot;wikitable sortable&amp;quot;&lt;br /&gt;
|+&#039;&#039;&#039;Indian States by GDP (Purchasing power parity)&#039;&#039;&#039;&amp;lt;ref&amp;gt;{{cite web| url=http://statisticstimes.com/economy/gdp-of-indian-states.php|title=GDP of Indian states {{!}} Indian states GDP 2019 - StatisticsTimes.com|website=statisticstimes.com|access-date=2020-02-01}}&amp;lt;/ref&amp;gt;&lt;br /&gt;
!&#039;&#039;&#039;Rank&#039;&#039;&#039;&lt;br /&gt;
!&#039;&#039;&#039;State/Union territory&#039;&#039;&#039;&lt;br /&gt;
!&#039;&#039;&#039;2018-19 in Billion (USD)&#039;&#039;&#039;&lt;br /&gt;
|-&lt;br /&gt;
|1&lt;br /&gt;
|[[Maharashtra]]&lt;br /&gt;
| $1353.831&lt;br /&gt;
|-&lt;br /&gt;
|2&lt;br /&gt;
|[[Tamil Nadu]]&lt;br /&gt;
| $820.652&lt;br /&gt;
|-&lt;br /&gt;
|3&lt;br /&gt;
|[[Uttar Pradesh]]&lt;br /&gt;
| $722.644&lt;br /&gt;
|-&lt;br /&gt;
|4&lt;br /&gt;
|[[Karnataka]]&lt;br /&gt;
| $758.011&lt;br /&gt;
|-&lt;br /&gt;
|5&lt;br /&gt;
|[[Gujarat]]&lt;br /&gt;
| $738.039&lt;br /&gt;
|-&lt;br /&gt;
|6&lt;br /&gt;
|[[West Bengal]]&lt;br /&gt;
| $561.150&lt;br /&gt;
|-&lt;br /&gt;
|7&lt;br /&gt;
|[[Rajasthan]]&lt;br /&gt;
| $469.068&lt;br /&gt;
|-&lt;br /&gt;
|8&lt;br /&gt;
|[[Andhra Pradesh]]&lt;br /&gt;
| $454.167&lt;br /&gt;
|-&lt;br /&gt;
|9&lt;br /&gt;
|[[Telangana]]&lt;br /&gt;
| $423.176&lt;br /&gt;
|-&lt;br /&gt;
|10&lt;br /&gt;
|[[Madhya Pradesh]]&lt;br /&gt;
| $408.822&lt;br /&gt;
|-&lt;br /&gt;
|11&lt;br /&gt;
|[[Kerala]]&lt;br /&gt;
| $393.267&lt;br /&gt;
|-&lt;br /&gt;
|12&lt;br /&gt;
|[[Delhi]]&lt;br /&gt;
| $387.407&lt;br /&gt;
|-&lt;br /&gt;
|13&lt;br /&gt;
|[[Haryana]]&lt;br /&gt;
| $351.456&lt;br /&gt;
|-&lt;br /&gt;
|14&lt;br /&gt;
|[[Bihar]]&lt;br /&gt;
| $272.125&lt;br /&gt;
|-&lt;br /&gt;
|15&lt;br /&gt;
|[[Punjab]]&lt;br /&gt;
| $268.981&lt;br /&gt;
|-&lt;br /&gt;
|16&lt;br /&gt;
|[[Odisha]]&lt;br /&gt;
| $244.973&lt;br /&gt;
|-&lt;br /&gt;
|17&lt;br /&gt;
|[[Assam]]&lt;br /&gt;
| $161.956&lt;br /&gt;
|-&lt;br /&gt;
|18&lt;br /&gt;
|[[Chattisgarh]]&lt;br /&gt;
| $159.542&lt;br /&gt;
|-&lt;br /&gt;
|19&lt;br /&gt;
|[[Jharkhand]]&lt;br /&gt;
| $155.078&lt;br /&gt;
|-&lt;br /&gt;
|20&lt;br /&gt;
|[[Uttrakhand]]&lt;br /&gt;
| $125.096&lt;br /&gt;
|-&lt;br /&gt;
|21&lt;br /&gt;
|[[Himachal Pradesh]]&lt;br /&gt;
| $78.938&lt;br /&gt;
|-&lt;br /&gt;
|22&lt;br /&gt;
|[[Jammu and Kashmir]]&lt;br /&gt;
| $77.745&lt;br /&gt;
|-&lt;br /&gt;
|&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
==See also==&lt;br /&gt;
*[[List of Indian states and union territories by GDP]]&lt;br /&gt;
&lt;br /&gt;
==References==&lt;br /&gt;
{{reflist}}{{No categories|date=October 2023}}&lt;/div&gt;</summary>
		<author><name>Aryan Chaturvedi</name></author>
	</entry>
	<entry>
		<id>https://en.bharatpedia.org/w/index.php?title=Jaishankar_(disambiguation)&amp;diff=432595</id>
		<title>Jaishankar (disambiguation)</title>
		<link rel="alternate" type="text/html" href="https://en.bharatpedia.org/w/index.php?title=Jaishankar_(disambiguation)&amp;diff=432595"/>
		<updated>2023-10-06T07:48:54Z</updated>

		<summary type="html">&lt;p&gt;Aryan Chaturvedi: Jaishankar: No primary topic&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;#REDIRECT [[Jaishankar]]&lt;br /&gt;
&lt;br /&gt;
{{Redirect category shell|&lt;br /&gt;
{{R from move}}&lt;br /&gt;
{{R to disambiguation page}}&lt;br /&gt;
}}&lt;/div&gt;</summary>
		<author><name>Aryan Chaturvedi</name></author>
	</entry>
	<entry>
		<id>https://en.bharatpedia.org/w/index.php?title=Paraunkha&amp;diff=428274</id>
		<title>Paraunkha</title>
		<link rel="alternate" type="text/html" href="https://en.bharatpedia.org/w/index.php?title=Paraunkha&amp;diff=428274"/>
		<updated>2023-09-17T00:48:36Z</updated>

		<summary type="html">&lt;p&gt;Aryan Chaturvedi: Shared a valuable article.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Short description|Village in Uttar Pradesh, India}}&lt;br /&gt;
{{Use dmy dates}}&lt;br /&gt;
{{Use Indian English}}&lt;br /&gt;
{{distinguish|Paronkh}}&lt;br /&gt;
{{Infobox settlement&lt;br /&gt;
| name                    = Paraunkha&lt;br /&gt;
| native_name             = &lt;br /&gt;
| native_name_lang        = &lt;br /&gt;
| other_name              = &lt;br /&gt;
| nickname                = &lt;br /&gt;
| settlement_type         = Village&lt;br /&gt;
| image_skyline           = &lt;br /&gt;
| image_alt               = &lt;br /&gt;
| image_caption           = &lt;br /&gt;
| image_map               = &lt;br /&gt;
| map_caption             = &lt;br /&gt;
| pushpin_map             = India Uttar Pradesh&lt;br /&gt;
| pushpin_label_position  = right&lt;br /&gt;
| pushpin_map_alt         = &lt;br /&gt;
| pushpin_map_caption     = Location in Uttar Pradesh, India&lt;br /&gt;
| coordinates             = {{coord|27.16087|N|79.31142|E|display=inline,title}}&lt;br /&gt;
| subdivision_type        = Country&lt;br /&gt;
| subdivision_name        = [[India]]&lt;br /&gt;
| subdivision_type1       = [[States and territories of India|State]]&lt;br /&gt;
| subdivision_name1       = [[Uttar Pradesh]]&lt;br /&gt;
| subdivision_type2       = [[List of districts of India|District]]&lt;br /&gt;
| subdivision_name2        = [[Mainpuri district|Mainpuri]]&lt;br /&gt;
| subdivision_type3       = [[Tehsil]]&lt;br /&gt;
| subdivision_name3       = [[Bhongaon]]&lt;br /&gt;
| established_title       = &amp;lt;!-- Established --&amp;gt;&lt;br /&gt;
| established_date        = &lt;br /&gt;
| founder                 = &lt;br /&gt;
| named_for               = &lt;br /&gt;
| government_type         = &lt;br /&gt;
| governing_body          = &lt;br /&gt;
| unit_pref               = Metric&lt;br /&gt;
| area_footnotes          = &amp;lt;ref name=&amp;quot;Census 2011 A&amp;quot;/&amp;gt;&lt;br /&gt;
| area_rank               = &lt;br /&gt;
| area_total_km2          = 10.902&lt;br /&gt;
| elevation_footnotes     = &lt;br /&gt;
| elevation_m             = &lt;br /&gt;
| population_total        = 8198&lt;br /&gt;
| population_as_of        = 2011&lt;br /&gt;
| population_rank         = &lt;br /&gt;
| population_density_km2  = auto&lt;br /&gt;
| population_demonym      = &lt;br /&gt;
| population_footnotes    = &amp;lt;ref name=&amp;quot;Census 2011 A&amp;quot;/&amp;gt;&lt;br /&gt;
| demographics_type1      = &lt;br /&gt;
| demographics1_title1    = &lt;br /&gt;
| demographics1_info1     = &lt;br /&gt;
| timezone1               = [[Indian Standard Time|IST]]&lt;br /&gt;
| utc_offset1             = +5:30&lt;br /&gt;
| postal_code_type        = [[Postal Index Number|PIN]]&lt;br /&gt;
| postal_code             = 206301&lt;br /&gt;
| registration_plate      = &lt;br /&gt;
| website                 = &lt;br /&gt;
| footnotes               = &lt;br /&gt;
}}&lt;br /&gt;
&#039;&#039;&#039;Paraunkha&#039;&#039;&#039; ([[Devanagari]]: परौन्खा {{IAST|Parauṅkhā}}) is a village in [[Bewar, Mainpuri|Bewar]] block of [[Mainpuri district]], [[Uttar Pradesh]]. As of 2011, it has a population of 8,198, in 1,390 households.&lt;br /&gt;
&lt;br /&gt;
== Geography ==&lt;br /&gt;
Paraunkha is located southeast of the town of Bewar, in a tract of fertile [[loam]]y soil at what was historically at the southeastern corner of &#039;&#039;[[pargana]]&#039;&#039; Bewar.&amp;lt;!-- Gazetteer 1910, p. 192 --&amp;gt; There is a prominent &#039;&#039;[[jhil]]&#039;&#039; on village lands.&amp;lt;ref name=&amp;quot;Gazetteer 1910&amp;quot;&amp;gt;{{cite book |editor1-last=Neave|editor1-first=E. R. |title=Mainpuri: A Gazetteer, Being Volume X of the District Gazetteers of the United Provinces of Agra and Oudh |publisher=Government Press |location=Allahabad |url=https://archive.org/details/in.ernet.dli.2015.181613 |access-date=19 June 2023}}&amp;lt;/ref&amp;gt;{{rp|192}}&lt;br /&gt;
&lt;br /&gt;
== Demographics ==&lt;br /&gt;
As of 2011, Paraunkha had a population of 8,198, in 1,390 households.&amp;lt;ref name=&amp;quot;Census 2011 A&amp;quot;/&amp;gt;{{rp|200}} This population was 53.3% male (4,368) and 46.7% female (3,830).&amp;lt;!-- Census 2011 B, p. 148 --&amp;gt; The 0-6 age group numbered 1,231 (619 male and 612 female), or 15.0% of the total population.&amp;lt;!-- Census 2011 B, p. 148 --&amp;gt; 2,243 residents were members of Scheduled Castes, or 27.4% of the total.&amp;lt;ref name=&amp;quot;Census 2011 B&amp;quot;&amp;gt;{{cite web |title=Census of India 2011: Uttar Pradesh District Census Handbook - Mainpuri, Part B (Village and Town Wise Primary Census Abstract) |url=https://censusindia.gov.in/nada/index.php/catalog/1259/download/4050/DH_2011_0917_PART_B_DCHB_MAINPURI.pdf |website=Census of India |access-date=19 June 2023}}&amp;lt;/ref&amp;gt;{{rp|148-9}}&lt;br /&gt;
&lt;br /&gt;
The [[1981 Census of India|1981 census]] recorded Paraunkha (as &amp;quot;Paraukha&amp;quot;) as having a population of 5,623 people, in 902 households.&amp;lt;ref name=&amp;quot;Census 1981&amp;quot;&amp;gt;{{cite book |title=Census 1981 Uttar Pradesh: District Census Handbook Part XIII-A: Village &amp;amp; Town Directory, District Mainpuri |url=https://censusindia.gov.in/nada/index.php/catalog/29484/download/32665/28516_1981_MAI.pdf |access-date=25 July 2023}}&amp;lt;/ref&amp;gt;{{rp|188-9}}&lt;br /&gt;
&lt;br /&gt;
The [[1961 Census of India|1961 census]] recorded Paraunkha (as &amp;quot;Paronkha&amp;quot;) as comprising 13 hamlets, with a total population of 3,891 people (2,130 male and 1,761 female), in 707 households and 536 physical houses. The area of the village was given as 2,799 acres and it had a post office at that point.&amp;lt;ref name=&amp;quot;Census 1961&amp;quot;&amp;gt;{{cite book |title=Census 1961: District Census Handbook, Uttar Pradesh (24 - Mainpuri District) |location=Lucknow |url=https://censusindia.gov.in/nada/index.php/catalog/28772/download/31954/22833_1961_MAI.pdf |access-date=25 December 2021}}&amp;lt;/ref&amp;gt;{{rp|xcviii}}&lt;br /&gt;
&lt;br /&gt;
== Infrastructure ==&lt;br /&gt;
As of 2011, Paraunkha had 3 primary schools; it did not have any healthcare facilities.&amp;lt;!-- Census 2011 A, p. 200-1 --&amp;gt; Drinking water was provided by tap, hand pump, and tube well/borehole; there were no public toilets.&amp;lt;!-- Census 2011 A, p. 202 --&amp;gt; The village had a post office but no public library; there was at least some access to electricity for all purposes.&amp;lt;!-- Census 2011 A, p. 202, 4 --&amp;gt; Streets were made of both &#039;&#039;[[Indian vernacular architecture#kachcha|kachcha]]&#039;&#039; and &#039;&#039;[[Indian vernacular architecture#pucca|pakka]]&#039;&#039; materials.&amp;lt;!-- Census 2011 A, p. 205 --&amp;gt;&amp;lt;ref name=&amp;quot;Census 2011 A&amp;quot;&amp;gt;{{cite web |title=Census of India 2011: Uttar Pradesh District Census Handbook - Mainpuri, Part A (Village and Town Directory) |url=https://censusindia.gov.in/nada/index.php/catalog/1258/download/4046/DH_2011_0917_PART_A_DCHB_MAINPURI.pdf |website=Census of India |access-date=19 June 2023}}&amp;lt;/ref&amp;gt;{{rp|200-5}}&lt;br /&gt;
&lt;br /&gt;
==References==&lt;br /&gt;
{{Reflist}}&lt;br /&gt;
&lt;br /&gt;
{{Mainpuri district}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Villages in Mainpuri district]]&lt;/div&gt;</summary>
		<author><name>Aryan Chaturvedi</name></author>
	</entry>
	<entry>
		<id>https://en.bharatpedia.org/w/index.php?title=SYSTAT_(statistics_package)&amp;diff=395080</id>
		<title>SYSTAT (statistics package)</title>
		<link rel="alternate" type="text/html" href="https://en.bharatpedia.org/w/index.php?title=SYSTAT_(statistics_package)&amp;diff=395080"/>
		<updated>2023-07-11T15:03:46Z</updated>

		<summary type="html">&lt;p&gt;Aryan Chaturvedi: Created an influential manuscript.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Multiple issues|&lt;br /&gt;
{{No footnotes|date=July 2023}}&lt;br /&gt;
{{Notability}}&lt;br /&gt;
}}&lt;br /&gt;
{{Infobox software&lt;br /&gt;
| name = SYSTAT&lt;br /&gt;
| logo = &lt;br /&gt;
| screenshot = &lt;br /&gt;
| caption = &lt;br /&gt;
| developer = Systat Software Inc.&lt;br /&gt;
| latest_release_version = 13&lt;br /&gt;
| latest_release_date = 2009&lt;br /&gt;
| operating_system = [[Microsoft Windows|Windows]]&lt;br /&gt;
| genre = [[Statistical package]]&lt;br /&gt;
| license = [[Proprietary software|Proprietary]]&lt;br /&gt;
| website = [http://www.systat.com SYSTAT]&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;SYSTAT&#039;&#039;&#039; is a [[statistics]] and statistical graphics [[software]] package, developed by [[Leland Wilkinson]] in the late 1970s, who was at the time an [[assistant professor]] of psychology at the [[University of Illinois at Chicago]]. Systat Software Inc. was incorporated in 1983 and grew to over 50 employees.&lt;br /&gt;
&lt;br /&gt;
In 1995, SYSTAT was sold to [[SPSS Inc.]], who marketed the product to a scientific audience under the SPSS Science division. By 2002, SPSS had changed its focus to [[Analytics|business analytics]] and decided to sell SYSTAT to Cranes Software in [[Bangalore]], [[India]]. Cranes formed Systat Software, Inc. to market and distribute SYSTAT in the US, and a number of other divisions for global distribution. The headquarters are in [[Chicago, Illinois]].&lt;br /&gt;
&lt;br /&gt;
By 2005, SYSTAT was in its eleventh version having a revamped codebase completely changed from [[Fortran]] into [[C++]]. Version 13 came out in 2009, with improvements in the user interface and several new features.&lt;br /&gt;
&lt;br /&gt;
==See also==&lt;br /&gt;
*[[Comparison of statistical packages]]&lt;br /&gt;
*[[PeakFit]]&lt;br /&gt;
*[[TableCurve 2D]]&lt;br /&gt;
*[[TableCurve 3D]]&lt;br /&gt;
&lt;br /&gt;
==References==&lt;br /&gt;
{{Reflist}}&lt;br /&gt;
* {{cite journal |first=Philip G. |last=Stein |first2=James R. |last2=Matey |first3=Karen |last3=Pitts |title=A Review of Statistical Software for the Apple Macintosh |journal=[[The American Statistician]] |volume=51 |issue=1 |pages=67–82 |year=1997 |doi=10.1080/00031305.1997.10473593 }}&lt;br /&gt;
&lt;br /&gt;
==External links==&lt;br /&gt;
*[http://www.systat.com SYSTAT]&lt;br /&gt;
*[http://www.cs.uic.edu/~wilkinson/SYSTAT/systat.html The story of SYSTAT] as told by [[Leland Wilkinson|Wilkinson]]&lt;br /&gt;
&lt;br /&gt;
{{Statistical software}}&lt;br /&gt;
&lt;br /&gt;
[[Category:C++ software]]&lt;br /&gt;
[[Category:Statistical software]]&lt;br /&gt;
[[Category:Windows-only software]]&lt;/div&gt;</summary>
		<author><name>Aryan Chaturvedi</name></author>
	</entry>
	<entry>
		<id>https://en.bharatpedia.org/w/index.php?title=Space_Capsule_Recovery_Experiment&amp;diff=386309</id>
		<title>Space Capsule Recovery Experiment</title>
		<link rel="alternate" type="text/html" href="https://en.bharatpedia.org/w/index.php?title=Space_Capsule_Recovery_Experiment&amp;diff=386309"/>
		<updated>2022-01-23T11:19:32Z</updated>

		<summary type="html">&lt;p&gt;Aryan Chaturvedi: Created an inspiring work.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Short description|Indian spacecraft}}&lt;br /&gt;
{{Use Indian English}}&lt;br /&gt;
{{Infobox spaceflight&lt;br /&gt;
| name                  = SRE-1&lt;br /&gt;
| image                 = ISRO-SCRE-1-Spacecraft-1.jpg&lt;br /&gt;
| image_caption         = The SRE-1 spacecraft on public display at [[Thiruvananthapuram]] in April 2007&lt;br /&gt;
| insignia              =&lt;br /&gt;
&lt;br /&gt;
| mission_type          = Technology&lt;br /&gt;
| operator              = [[Indian Space Research Organisation|ISRO]]&lt;br /&gt;
| website               = &lt;br /&gt;
| COSPAR_ID             = 2007-001C&lt;br /&gt;
| SATCAT                = 29711&lt;br /&gt;
| mission_duration      = 12&amp;amp;nbsp;days&lt;br /&gt;
&lt;br /&gt;
| spacecraft_type       = &lt;br /&gt;
| manufacturer          = [[Indian Space Research Organisation|ISRO]]&lt;br /&gt;
| dry_mass              = &lt;br /&gt;
| launch_mass           = {{convert|550|kg}}&lt;br /&gt;
| dimensions            = &lt;br /&gt;
| power                 =&lt;br /&gt;
&lt;br /&gt;
| launch_date           = {{start-date|10 January 2007, 03:54|timezone=yes}}&amp;amp;nbsp;UTC&lt;br /&gt;
| launch_rocket         = [[Polar Satellite Launch Vehicle|PSLV]] C7&lt;br /&gt;
| launch_site           = [[Satish Dhawan Space Centre|Satish Dhawan]] [[Satish Dhawan Space Centre First Launch Pad|FLP]]&lt;br /&gt;
| launch_contractor     = [[Indian Space Research Organisation|ISRO]]&lt;br /&gt;
| entered_service       =&lt;br /&gt;
 &lt;br /&gt;
| landing_date          = {{end-date|22 January 2007, 04:16|timezone=yes}}&amp;amp;nbsp;UTC&lt;br /&gt;
| landing_site          = [[Bay of Bengal]]&lt;br /&gt;
&lt;br /&gt;
| orbit_epoch           = &lt;br /&gt;
| orbit_reference       = [[Geocentric orbit|Geocentric]]&lt;br /&gt;
| orbit_regime          = [[low Earth orbit|Low Earth]]&lt;br /&gt;
| orbit_periapsis       =  &lt;br /&gt;
| orbit_apoapsis        = &lt;br /&gt;
| orbit_inclination     = &lt;br /&gt;
| orbit_semimajor       = &lt;br /&gt;
| orbit_eccentricity    = &lt;br /&gt;
| orbit_period          = &lt;br /&gt;
| apsis                 = gee&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
The &#039;&#039;&#039;Space Capsule Recovery Experiment&#039;&#039;&#039; (&#039;&#039;&#039;SCRE&#039;&#039;&#039; or more commonly &#039;&#039;&#039;SRE&#039;&#039;&#039; or &#039;&#039;&#039;SRE-1&#039;&#039;&#039;) is an Indian experimental [[spacecraft]] which was launched at 03:53 [[UTC]] on January 10, 2007, from [[Sriharikota]] by the [[Indian Space Research Organisation]] (ISRO).  The launch was conducted using the C7 launch of the [[PSLV]] rocket, along with three other satellites. It remained in orbit for 12 days before re-entering the Earth&#039;s atmosphere and splashing down into the [[Bay of Bengal]] at 04:16 [[UTC]] on January 22.&amp;lt;ref&amp;gt;[https://web.archive.org/web/20070104225230/http://www.hindu.com/2006/12/22/stories/2006122206711300.htm PSLV to put recoverable satellite into orbit], &#039;&#039;The Hindu&#039;&#039; December 22, 2006&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;[https://web.archive.org/web/20070121042504/http://www.hindu.com/2007/01/11/stories/2007011104750100.htm The Hindu:  PSLV-C7 launch a success] January 11, 2007&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;[http://www.spacedaily.com/reports/ISRO_Ready_For_Launch_Of_Multi_Mission_PSLV_999.html ISRO Ready For Launch Of Multi-Mission PSLV] January 05, 2007&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==Overview==&lt;br /&gt;
SRE-1 was designed to demonstrate the capability to recover an orbiting space capsule, and the technology of an orbiting platform for performing experiments in [[microgravity]] conditions. It was also intended to test reusable [[Thermal Protection System]], navigation, guidance and control, hypersonic aero-thermodynamics, management of communication blackout, deceleration and flotation system and recovery operations.&amp;lt;ref&amp;gt;[http://news.xinhuanet.com/english/2007-01/22/content_5638117.htm China View: India&#039;s first space capsule returns to earth] {{webarchive|url=https://web.archive.org/web/20080502160720/http://news.xinhuanet.com/english/2007-01/22/content_5638117.htm }} January 22, 2007&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;[http://www.isro.org/pressrelease/Jan22_2007.htm ISRO Press Release] {{webarchive|url=https://web.archive.org/web/20080514090034/http://www.isro.org/pressrelease/Jan22_2007.htm }} January 22, 2007&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;[https://web.archive.org/web/20070212181929/http://www.telegraphindia.com/1070123/asp/nation/story_7297989.asp 46-minute splash into elite space club] [[The Telegraph (Kolkata)|The Telegraph]] January 22, 2007&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;{{Cite web|url=http://www.aprsaf.org/data/aprsaf14_data/day1/SEU10_SRE%20slides%20for%20web.pdf|title=Space Capsule Recovery Experiment(SRE)|archive-url=https://web.archive.org/web/20131224103000/http://www.aprsaf.org/data/aprsaf14_data/day1/SEU10_SRE%20slides%20for%20web.pdf|archive-date=24 December 2013|access-date=16 August 2018}}&amp;lt;/ref&amp;gt; The information obtained from this technology and experiment is being applied to the design of India&#039;s &#039;&#039;[[Gaganyaan]]&#039;&#039; crewed orbital capsule.&lt;br /&gt;
&lt;br /&gt;
==Design==&lt;br /&gt;
SRE-1 is a 555&amp;amp;nbsp;kg capsule. It comprises aero-thermo structure, internal structure, Mission Management Unit, Altitude sensors and Inertial measurement unit, S-band transponder with unique belt array antenna embedded to ATS, power and electronics packages to support deceleration and flotation system. It also houses two microgravity payloads. It has a sphere-cone-flare configuration with a spherical nose of about 0.5 m radius, base diameter of 2 m and 1.6 m height. The [[parachute]], [[Pyrotechnics|pyro]] devices, [[avionics]] packages of triggering unit and sequencer, [[telemetry]] and tracking system and sensors for measurement of system performance parameters are placed inside the SRE-1 capsule. Parachutes for SRE capsule were provided by [[Aerial Delivery Research and Development Establishment|ADRDE]].&amp;lt;ref&amp;gt;[http://www.frontlineonnet.com/fl2402/stories/20070209005312600.htm &#039;&#039;Aerial Delivery Research and Development Establishment, Agra, provided the parachutes&#039;&#039;] {{webarchive|url=https://web.archive.org/web/20120222014802/http://www.frontlineonnet.com/fl2402/stories/20070209005312600.htm }}&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
To withstand the heat of re-entry, the [[Atmospheric reentry#Sphere-cone|cone-shaped]] SRE-1 has a [[Thermal protection system]] composed of 264 silica tiles of 14 different types over conical surface,&amp;lt;ref name=&amp;quot;:0&amp;quot;&amp;gt;{{Cite web|url=http://www.isampe.org/artinew1.htm|title=Welcome to ISAMPE|website=www.isampe.org|access-date=2018-03-06}}&amp;lt;/ref&amp;gt; and an ablative nose cap of carbon-phenolic composite. Scaled replica of SRE with this thermal protection system was validated in Plasma [[Wind tunnel|Wind Tunnel]] facility of [[Italian Aerospace Research Centre|CIRA]], Italy.&amp;lt;ref&amp;gt;{{Cite web|title=Testata con successo nella galleria al plasma del CIRA la nuova capsula spaziale indiana|url=http://www.capuaonline.it/eventi/cira/comstampa031006.html|url-status=live|archive-url=https://web.archive.org/web/20201213220734/http://www.capuaonline.it/eventi/cira/comstampa031006.html|archive-date=13 December 2020|access-date=2020-12-13|website=www.capuaonline.it}}&amp;lt;/ref&amp;gt; ISRO is also working on technology to manufacture [[Reinforced carbon-carbon|carbon-carbon composite]] TPS, which, along with the silica tiles tested with the SRE-1, could find use in future reusable spacecraft such as ISRO&#039;s planned [[Reusable launch vehicle|Reusable Launch Vehicle]].&lt;br /&gt;
&lt;br /&gt;
==Re-entry==&lt;br /&gt;
&amp;lt;!-- Deleted image removed: [[File:ISRO-sre02.jpg|thumb|[[Indian Navy]] [[Frogmen]] recovering the SRE-1 Capsule after splashdown in the [[Bay of Bengal]]]] --&amp;gt;&lt;br /&gt;
SRE-1 was traveling around the earth in a circular polar orbit at an altitude of 637 kilometers. In preparation for its reentry, SRE-1 was put into an elliptical orbit with a [[perigee]] of 485 kilometers and an [[apogee]] of 639 kilometers by issuing commands from the spacecraft control centre of [[Indian Space Research Organisation Telemetry, Tracking and Command Network|ISTRAC]] at [[Bangalore]] on January 19, 2007. The critical de-boost operations were executed from SCC, [[Bangalore]] supported by a network of ground stations at Bangalore, [[Lucknow]], [[Sriharikota]], [[Mauritius]], [[Biak]] in [[Indonesia]], [[Saskatoon]] in Canada, [[Svalbard]] in Norway besides shipborne and airborne terminals.&lt;br /&gt;
&lt;br /&gt;
On January 22, 2007, the re-orientation of SRE-1 capsule for de-boost operations commenced at 08:42 am [[Indian Standard Time|IST]]. The de-boost started at 09:00 am with the firing of on-board rocket motors and the operations were completed at 09:10 am. At 09:17 am, SRE-1 capsule was reoriented for its re-entry into the dense atmosphere. The capsule made its re-entry at 09:37 am at an altitude of 100 kilometers with a velocity of 8&amp;amp;nbsp;km/s (ca. 29,000&amp;amp;nbsp;km/h). During its reentry, the capsule was protected from the intense heat by carbon phenolic [[Ablative heat shield|ablative material]] and silica tiles on its outer surface.&lt;br /&gt;
&lt;br /&gt;
By the time SRE-1 descended to an altitude of 5&amp;amp;nbsp;km, [[Atmospheric reentry|aerodynamic braking]] had considerably reduced its velocity to 101&amp;amp;nbsp;m/s (364&amp;amp;nbsp;km/h). Pilot and [[drogue parachute]] deployments helped in further reducing its velocity to 47&amp;amp;nbsp;m/s (169&amp;amp;nbsp;km/h).&lt;br /&gt;
&lt;br /&gt;
===Splashdown and recovery===&lt;br /&gt;
The main [[parachute]] was deployed at about 2&amp;amp;nbsp;km altitude. SRE-1 splashed down in the [[Bay of Bengal]] with a velocity of 12&amp;amp;nbsp;m/s (43&amp;amp;nbsp;km/h) at 09:46 am IST (04:16 am [[UTC]]). The flotation system, which was immediately triggered, kept the capsule afloat. Recovery operations were supported and carried out by the [[Indian Coast Guard]] and [[Indian Navy]] using ships, aircraft and helicopters.&lt;br /&gt;
&lt;br /&gt;
==Experiments and results==&lt;br /&gt;
During its stay in orbit, the following two experiments on board SRE-1 were successfully conducted under microgravity conditions.&lt;br /&gt;
*One of the experiments studied metal melting and crystallisation under microgravity conditions. This experiment, jointly designed by the [[Indian Institute of Science]], [[Bangalore]] and [[Vikram Sarabhai Space Centre]], [[Thiruvananthapuram]], was performed in an isothermal heating furnace.&lt;br /&gt;
*The second experiment, jointly designed by National Metallurgical Laboratory, [[Jamshedpur]] and [[ISRO Satellite Centre]] [[Bangalore]], studied the synthesis of nano-crystals under microgravity conditions.  This was an experiment in designing biomaterials that better replicate natural biological products. The experimental results have yet to be analysed.&lt;br /&gt;
&lt;br /&gt;
Performance of Silica TPS tiles in conical region of capsule was satisfactory and tile surfaces were found intact with some minor handling related damage during recovery operations. The spacecraft remained afloat for approximately 2 hours in seawater before recovery, causing minor cracks and seawater deposits on tile surfaces.&amp;lt;ref name=&amp;quot;:0&amp;quot; /&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==See also==&lt;br /&gt;
{{Portal|Spaceflight}}&lt;br /&gt;
*[[Space Capsule Recovery Experiment II|SRE-2]]&lt;br /&gt;
*[[Crew Module Atmospheric Re-entry Experiment|CARE]]&lt;br /&gt;
*[[List of Indian satellites]]&lt;br /&gt;
*[[Atmospheric Reentry Demonstrator]] (ARD was a suborbital reentry test vehicle built by [[Aérospatiale]] of France for the European Space Agency and flown on the third Ariane 5 flight on October 21, 1998)&lt;br /&gt;
&lt;br /&gt;
==References==&lt;br /&gt;
{{Reflist}}&lt;br /&gt;
*[https://web.archive.org/web/20131224103000/http://www.aprsaf.org/data/aprsaf14_data/day1/SEU10_SRE%20slides%20for%20web.pdf ISRO Presentation on Day 1 of the 14th annual meeting of the Asia Pacific Regional Space Agency Forum]&lt;br /&gt;
&lt;br /&gt;
{{Indian space programme}}&lt;br /&gt;
{{Indian spacecraft}}&lt;br /&gt;
{{Orbital launches in 2007}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Satellites of India]]&lt;br /&gt;
[[Category:2007 in India]]&lt;br /&gt;
[[Category:Spacecraft launched in 2007]]&lt;br /&gt;
[[Category:Spacecraft which reentered in 2007]]&lt;br /&gt;
[[Category:Test spaceflights]]&lt;br /&gt;
[[Category:Spacecraft launched by PSLV rockets]]&lt;/div&gt;</summary>
		<author><name>Aryan Chaturvedi</name></author>
	</entry>
</feed>