எஸ். ஆர்-71 பிளக்பேட்
{|{{Infobox aircraft begin
  |name= எஸ். ஆர்-71 பிளக்பேட் 
  |image= Lockheed SR-71 Blackbird.jpg
  |caption= 1994 இல் எஸ். ஆர்-71பி 
  |alt= Dryden's SR-71B Blackbird, NASA 831, slices across the snow-covered southern Sierra Nevada Mountains of California after being refueled by an Air Force tanker during a 1994 flight. SR-71B was the trainer version of the SR-71. The dual cockpit to allow the instructor to fly. Note the streaks of fuel from refueling spillage.
 }}{{Infobox aircraft type
  |type= [[போரியல் மூல உபாயம்|தந்திரோபாய]] [[வேவு வானூர்தி]]
  |manufacturer= லொக்கீட், 
  |designer= கெலி ஜோன்சன்
  |first flight= 22 டிசம்பர் 1964
  |introduced= 1966
  |retired= 1998
  |number built= 32
  |status= ஓய்வு
  |unit cost =
  |primary user= [[ஐக்கிய அமெரிக்க வான்படை]]
  |more users= [[நாசா]]
  |developed from= லொக்கீட் ஏ-12
  |variants with their own articles =
 }}
 |}
 
 '''லொக்கீட் எஸ். ஆர்-71 &quot;பிளக்பேட்&quot;'''  (''Lockheed SR-71 &quot;Blackbird&quot;'') என்பது முன்னேற்றமடைந்த, நீண்ட தூர, [[மாக் எண்|மாக்]] 3+ வேகமுடைய தந்திரோபாய வேவு வானூர்தி.&lt;ref&gt;[http://www.lockheedmartin.com/us/100years/programs/sr-71-blackbird.html &quot;SR-71 Blackbird.&quot;] ''lockheedmartin.com''. Retrieved: 14 March 2010.&lt;/ref&gt; இது லொக்கீட் ஏ-12 வானூர்தியிலிருந்து கருப்புத் திட்டத்தினூடாக உருவாக்கப்பட்டது. வேவு நடவடிக்கைகளின் போது இது அதி வேகத்திலும், உயரத்திலும் பறந்து அச்சுறுத்தல்களுக்கு முகங்கொடுக்க அனுமதிக்கப்பட்டது. [[நில வான் ஏவுகணை]] ஏவப்பட்டது கண்டுபிடிக்கப்பட்டால், தட்டிக்கழிக்கும் செயற்பாடு வானூர்தியைத் துரிதப்படுத்தி ஏவுகணையினை முந்திவிடும்&lt;ref name=&quot;SR71 Blackbird 2006&quot;&gt;&quot;SR71 Blackbird.&quot; PBS documentary, Aired: 15 November 2006.&lt;/ref&gt;
 
 ==விபரங்கள் (எஸ். ஆர்-71ஏ)==
 [[File:Lockheed SR-71A 3view.svg|350px|right|Orthographically projected diagram of the SR-71A Blackbird.]]
 
 {{aircraft specifications
 &lt;!-- if you do not understand how to use this template, please ask at [[Wikipedia talk:WikiProject Aircraft]]
      please answer the following questions --&gt;
 |plane or copter?=plane
 |jet or prop?=jet
 &lt;!-- Now, fill out the specs. Please include units where appropriate (main comes first, alt in parentheses). If an item doesn't apply, like capacity, leave it blank. For additional lines, end your alt units with )&lt;/li&gt; and start a new, fully formatted line with &lt;li&gt;
 --&gt;
 |ref= SR-71.org,&lt;ref&gt;[http://www.sr-71.org/blackbird/sr-71/ &quot;Lockheed SR-71 Blackbird page.&quot;] ''sr-71.org''. Retrieved: 14 March 2010.&lt;/ref&gt; Pace&lt;ref name=Pace_p110&gt;Pace 2004, p. 110.&lt;/ref&gt;
 &lt;!--
    General characteristics
 --&gt;
 |crew=2 (Pilot and Reconnaissance Systems Officer)
 |length main=107 ft 5 in
 |length alt=32.74&amp;nbsp;m
 |span main=55 ft 7 in
 |span alt=16.94&amp;nbsp;m
 |height main=18 ft 6 in
 |height alt=5.64&amp;nbsp;m
 |area main=1,800 ft&lt;sup&gt;2&lt;/sup&gt;
 |area alt=170&amp;nbsp;m&lt;sup&gt;2&lt;/sup&gt;
 |empty weight main=67,500 [[pound (mass)|lb]]
 |empty weight alt=30,600&amp;nbsp;kg
 |loaded weight main=152,000 lb
 |loaded weight alt=69,000&amp;nbsp;kg
 |payload main=3,500 lb
 |payload alt=1,600&amp;nbsp;kg
 |payload more=of sensors
 |max takeoff weight main=172,000 lb
 |max takeoff weight alt=78,000&amp;nbsp;kg
 |more general='''Wheel track:''' 16 ft 8 in (5.08&amp;nbsp;m)
 *'''Wheelbase:''' 37 ft 10 in (11.53&amp;nbsp;m)
 *'''[[Aspect ratio (wing)|Aspect ratio]]:''' 1.7
 &lt;!--
    Engine data
 --&gt;
 |engine (jet)=[[Pratt &amp; Whitney J58|Pratt &amp; Whitney J58-1]]
 |type of jet= continuous-bleed [[afterburning]] [[turbojet]]s
 |number of jets=2
 |thrust main= 34,000 [[pound-force|lbf]]
 |thrust alt= 151&amp;nbsp;kN
 |thrust original=
 |afterburning thrust main=
 |afterburning thrust alt=
 &lt;!--
    Performance data
 --&gt;
 |max speed main=Mach 3.3&lt;ref name=Pace_p110/&gt;&lt;ref&gt;Graham 1996, p. 48.&lt;/ref&gt;{{#tag:ref|Maximum speed limit was Mach 3.2, but could be raised to Mach 3.3 if the engine compressor inlet temperature did not exceed 801&amp;nbsp;°F (427&amp;nbsp;°C).&lt;ref&gt;Graham 2002, pp. 93, 223.&lt;/ref&gt;|group=&quot;N&quot;}}
 |max speed alt=2,200+ mph, 3,540+ km/h, 1,910+ knots
 |max speed more=at 80,000 ft (24,000 m)
 |range main=2,900 [[nautical mile|nmi]]
 |range alt=5,400&amp;nbsp;km
 |range more=
 |combat radius main=
 |combat radius alt=
 |combat radius more=
 |ferry range main=3,200 nmi
 |ferry range alt=5,925 km
 |ferry range more=
 |ceiling main= 85,000 ft
 |ceiling alt=25,900 m
 |climb rate main=197 ft/s
 |climb rate alt=60&amp;nbsp;m/s
 |loading main=84 lb/ft²
 |loading alt=410&amp;nbsp;kg/m²
 |thrust/weight=0.44
 |more performance=
 }}
 
 ==உசாத்துணை==
 ===அடிக்குறிப்புக்கள்===
 {{Reflist|group=N}}
 
 ===மேற்கோள்கள்===
 {{Reflist|30em}}
 
 ==வெளி இணைப்புக்கள்==
 {{Commons|SR-71 Blackbird}}
 * [http://www.sr-71.org/ SR-71.org site]
 * [http://www.habu.org/ The Online Blackbird Museum, Habu.org]
 * [http://www.blackbirds.net/sr71/index.html SR-71 page] and [http://www.blackbirds.net/u2/c_bennett/bbird-01.html First-hand account of SR-71 maintenance on Blackbirds.net]
 * [http://www1.dfrc.nasa.gov/Gallery/Photo/SR-71/index.html SR-71 Blackbird photographs] {{Webarchive|url=https://web.archive.org/web/20130607004110/http://www.dfrc.nasa.gov/gallery/photo/SR-71/index.html |date=2013-06-07 }} and [http://www.dfrc.nasa.gov/Gallery/Movie/SR-71/index.html videos at NASA's Dryden Flight Research Center's web site] {{Webarchive|url=https://web.archive.org/web/20130602213514/http://www.dfrc.nasa.gov/Gallery/Movie/SR-71/index.html |date=2013-06-02 }}
 * [http://test.museumofflight.org/exhibits/blackbird The Blackbird at the Museum of Flight, history and photographs] {{Webarchive|url=https://web.archive.org/web/20120311205412/http://test.museumofflight.org/exhibits/blackbird |date=2012-03-11 }}
 * [http://www.netwrx1.com/skunk-works/sr71flt.pdf SR-71 Flight Manual] {{Webarchive|url=https://web.archive.org/web/20090327095319/http://www.netwrx1.com/skunk-works/sr71flt.pdf |date=2009-03-27 }}
 * [http://wimp.com/fastestaircraft Operation of the SR-71] {{Webarchive|url=https://web.archive.org/web/20100102043843/http://wimp.com/fastestaircraft/ |date=2010-01-02 }}
 * [http://home.att.net/%7Ejbaugher/1961.html Summary of SR-71 Serial Numbers] {{Webarchive|url=https://web.archive.org/web/20070311111945/http://home.att.net/~jbaugher/1961.html |date=2007-03-11 }}
 * [http://www.area51zone.com/aircraft/sr71.shtml Interesting SR-71 Information and Stories on area51zone.com]
 * [http://www.wvi.com/~sr71webmaster/press_suit001.html The SR-71 Pilot Full Pressure Suit]
 * [http://books.google.com/books?id=rvT4HJkpfM4C&amp;lpg=PA43&amp;ots=c4VsxDU5z1&amp;dq=Jim%20Zwayer%2C%20a%20Lockheed%20flight-test%20specialist%2C%20and%20I%20were%20evaluating%20systems&amp;pg=PA43#v=onepage&amp;q=Jim%20Zwayer%2C%20a%20Lockheed%20flight-test%20specialist%2C%20and%20I%20were%20evaluating%20systems&amp;f=false Surviving the breakup of SR-71 at Mach 3.18]
 * [http://www.enginehistory.org/Convention/2005/Presentations/LawPete/ Peter Law's detailed technical presentations on SR-71 thermal and propulsion design features] {{Webarchive|url=https://web.archive.org/web/20161202103958/http://www.enginehistory.org/Convention/2005/Presentations/LawPete/ |date=2016-12-02 }}
 * [http://aerostories.free.fr/technique/J58/J58_01/page8.html The heart of the SR-71: the J58 engine]
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