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â:..â                                    Editor: V.N.Giritharan
2004 55 -
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ȢŢ!
ȢŢ!
ɢ째 Ȣ 
ɢ-䦃 ŢǢ !
[Cassini-Huygens Spaceship Orbiting the Saturn 
Planet (July 2004)] 
 
. þ
B.E. (Hons), P.Eng.(Nuclear) ɼ
"ɢ째 Ȣ Ш째, Ţ̸ Ȣ Ҿá Ũ 츢ɡ, ̨  â ħ ! 1980 ½ šƒ ŢǢ , Ţﻡɢ ž  ! ɢ째 Ţ󨾸 !  ɢ Ȣ ŢҸȡ" 
                       - Ţﻡɢ ŊĢ Ê [Wesley Huntress Jr. NASA Scientist] -


SATURNۨ: 3.4 Ģ Ţ š , [NASA, ESA, American & European Space Agencies] , ɢ-䦃 ŢǢ 2004 Ӿ ¢ ɢ째 , Ѩ, ţ¢ Ӿ Ӿġ ڸ!  θ 1980 ½  Ţ Ǣ 츢ǡ šƒ-1 šƒ-2 ŢǢ ɢ째 ¡ ɢ Ţﻡɢ ¡ ġ Ţ! ɢ¢ ɢ째 ½ 1997 짼â ռ Ţ! ĦǢ¢ 2.2 Ģ ŢǢ ½ ,  ɢ Ǣ , Ţ¡ է , 2004 Ӿ ¢ ɢ째Ǣ Ѩ Ţ!  ɢ ¢  , Ǣ [Planet Venus] ӾĢ Ө Ȣ, ¢ 725 "â ţ" [Gravitational Swingby Orbit] , Ǣ ! Ǣ- Ȣ , ɢ¢ Ÿ, Ǣ Ţǡ â ɢ째 ŢŢ Ţﻡɢ Ƣ .  ɢ째Ǣ Ģ 츢, ɢ ţ¢ Ȣ ո. 

"á ŢǢ " [European Space Agency (ESA)] ɢ "" [Huygens Lander] á ̨ Ţâ ɢ¢ â Ш ǡ ʼɢ [Titan Satellite] .  θ ɢ Ţ ɢ째 74 Ÿ Ȣ ,  째, Ш째, Ũ á . м ʼ Ш째 է 44 Ÿ ½ , ɢ¢ ɢ Ш  [Icy Moons] Ȣ ׸ ɢ â. 

ɢ ŢǢ Ģ 
½ Ţ! 

saturn1997 짼 15 ǡâŢ ɡ Ө¢Ģ [Cape Canaveral, Florida] ʼ IVB á즸 [Titan IVB Centaur Rocket] 򾡸 ŢǢ 츢 Ȣ.  á즸  츢 23 , 14 Ӽ 11,200 ɢ ŢǢ и .  ɢ¢ , ǢŨ, Ȣ Ǣ, Ш ӾӾ 17 ȡ Ҹ Ģ Ţﻡɢ,  "¡ɢ ɢ¢" [Giovanni Cassini  (1625-1712)] ¨ , ŢǢ . 

ɢ Ţ ۼ, ʼ Ш째Ǣ  "䦃" " "   츢 .  ɢ¢ Ũ ӾĢ "â¡ 䦃" [Christian Huygens (1629-1695)] ¨ , Ţ.  2004 Ӿ ɢ¢ þ ﺢ ͼ, Ÿ Ţ. ɢ째Ǣ Ţ¡ ,  Ȣ Ш째 ţ¢ 츢 ! 

θ ɢ ɢ째   ţ¢ Ȣ , . ɢ¢ 18 Ǣ â ʼ è  Ȣ Ţ . м 17 ɢ [Icy Moons: Enceladus, Hyperion, Dione, Rhea, Iapetus etc] ڸ Ȣ Ţ Ȣ . 

2004 ʺ 25 "䦃 Ţ" [Huygens Probe], Ȣ ɢ¢Ģ â . 2005 â 14 䦃 ʼ , 3 Ӿ Ө¡ ʼ è , ŢǢ¢   Ҿ ġ ! 

ɢ째 á  
šġ ɸ!

â 째 Ţ¡ â ɢ째. ɢ 95 â. 10.5 , â Ȣ 29.5 θ ɢ . ɢ째Ǣ Ţ è ̾¢ 75,000 ġ ,  ̾¢ 7000 Ţ 68,000 ġ Ȣ . ɢ Ȣ   ŨǢ 쨸 100,000 ɢ θ. ŨǢ Ţ, ຢ, 
ɢ ̸ Ǣټ Ÿ Ȣ, â þĢ, ͼŢ ø츢. ŨǢ 10 Ӿ 50 Ũ θ. ɢ째Ǣ Ǣ Ũ Ţ 169,000 츢 !  ŨǢ ̸ á ŸǢ ɢ째 Ȣ ž, ɢ¢ Ţ¢ ɢ ! 

2004 ¢ ɢ째Ǣ Ģ  , ţ¢ ɢ 񸡽 ġ! ɢ Ȣ ţ, ɢ ŨǢ  Ũ¨ ܼ. ŨǢ Ţ Ÿ Ȣ ž, ɢ Ģ ŨǢ , Ţ 3.4 Ģ ŢǢ â   ؾ ġ Ţ! 

ɢ ŢǢ Ģ 
Ţ, Ȣ!

Jayabarathanɢ, â ŢǢ¢ ĢĢ¡  Ţ Ţ¡ Ǣ, , Ţ¡ Ǣ  [Venus ->Venus ->Earth ->Jupiter Gravity Assist (VVEJGA)]  â Ÿţ ţ¢ [Gravitational Swingby Orbit] ½ ɢ ŢŢ ! ¢ ŢǢ [Astroids] ɢ 츢 á.  27 Ţ á ɢ ž Ȣθ! ɢ¢ Ţ: ü Ţ [Radar Mapper], [Imaging System],  Ţ ɢ [Infrared mapping Spectrameter], ຢ Ţ [Cosmic Dust Analyser], ɢ [Plasma Spectrameter], Ţ  [Magnetospheric Imager], ɢ [Magnetometer], ɢ/ο ɢ [Ion/Neutral  Mass Spectrometer], Ţ, 쨸   [Telemetry & Antennas] 

1. ɢ Ӿ 䦃 Ţ , ɢ¡ ɢ  Ȣ, ʼ Ţ .

2. ɢ째Ǣ ţ¢ Ȣ , ɢ  , ɢ¢ Ũ, ɢ¢ 18 á .

3. ɢ째 ŨǢ " , Ө Ҹ" [Three Dimensional Structure & Dynamical Behaviour of the Rings] Ȣ. 

4. Ш Ǣ Ǩ, Ţ ġڸ [Composition of the Satellite Surfaces & Geological History] â.

5. , Ө Ҹ [3D Structure & Behaviour of the Mangetosphere] Ȣ.

6. ɢ째Ǣ Ǣ  Өȸ  á.

7. ʼ Ш째Ǣ , Ȣ  .

8. ʼ â׸٨ ̽ Ȣ. 

9. ɢ째 18 Ш Ȣ . 

10. ɢ á즸 â ﺢ¢, ½ .

1973-1980 θǢ  
½ â !

1973 ǡâ ɡ Ө¢Ģ ɣ-11 [Pioneer-11] ȡθ Ǣ¢ ½ 1979 ɢ째 13,000 է Ӿ . ؾ,  ¡ ¡, ŢǢ¢ 츢! 

ɢ째Ǣ է 1980 θǢ   šƒ [Voyager-1 & Voyager-2] Ţ ½Ǣ ź. Ũ ɢ Ȣ¡ ɢ¢ Ҿ !  Ţ ɢ Ũ , Ȣ Ҿ !  ɢ째Ǣ è¢ 1100 Ÿ [1100 mph] 츨 ! , Ш째 Ȣ Ţ Ǣ šƒâ â Ҿ Ҹ, ɢ ½   ý. ġ Ȣ 
째Ǣ á, ¢  â 째Ǣ Ȣ â š ġ. 

"ɢ째 Ȣ    Ш째, Ţ̸ Ҿá   Ũ 츢ɡ, ̨  â ħ ! 1980 ½ šƒ ŢǢ , Ţﻡɢ ž ! ɢ째 Ţ󨾸 !  ɢ Ȣ ŢҸȡ" Ţﻡɢ ŊĢ Ê ڸȡ. 

ʼ Ш째 츢 
䦃 Ţ !

ɢ째Ǣ 18 Ǣ ʼ Ш째  ġȢ â. 3200 Ţ ʼ Ш째 Ҿ Ţ â! 2160   ŢӨ ¢ Ĩ Ţ â! š [Methane Gas], Ã š Ǣ ¢ Ǣ Ţ ¡! 700 9 Ţ 䦃 Ţ [Hyugens Probe] á ŢǢ ¡â, Ţ ɢ¢  . 

, [Titan Lander] ź, á ̨ 츢, Ÿ [Heat Shield, Descent Module with Parachute Package, Robotic Laboratory] . ɢ Ȣ ɢ [Mothership Cassini] Ǣ Ţ, ʼ 츢 ʼ Ţ Ÿ , ź Ÿ и. 110 Ţ , á ̨ Ţâ, ź ţ Ȣθ. 90 â ̨ , Ȣ ̨ Ţâ š Ţ, ʼ è θ. 

, ʼ Ш째Ǣ ʨ . м ʼ   , , , ɢ  ú Ţ . 䦃 Ţ ɢ . 

ŢǢ Ţﻡɢ ʼɢ ç [Oceans of Methane or Orethane] ġ 츢ȡ. Ţ Ǿ Ţﻡ Ţ [The Laws of Thermodynamics] ڸ. ɡ ¢ ü Ţ, á ڸ ǢŢ. 

ɢ ½ Ţ 
Ţ Ȣ!

  θ , 2008 Ģ ɢ¢ . 200 ռ Ũ ,  ¡ ţ¢ ɢ ŢǢ Ȣ ̾ ! ɡ Ǣ ٧ɢ ɢ¢ [Plutonium Thermoelectric Generators], Ţ ġ Ĩ  츢. ɡ ţ š Ȣ š á즸 â [Rocket Propellant]   ̧, Ũþ ɢ¢   ȧ š. 1980 Ȣ ȧȢ šƒ Ţ â  ŢǢ ! 

ھ Ǣ ɢ ?  ɢ, ɢ¢ Ũ ռ   θ Ȣġ!   ɢ째Ǣ Ҿ è ġ!  ʼ Ţ , ɢ째Ǣ ¢Ģ , ɢ¢ Ш ǧ¡ ǧ¡  áġ. " " [Aerobraking or Using a Body's Atmosphere to slow down a Spacecraft] ӨȨ , ɢ θ ʼ è á Ţ Ţġ! ɢ째Ǣ Ũ ġθ ɢ  á Ҿ ġ! 

:

1. Cassini Overview Summary www.floridatoday.com/space/explore/releases/1997b NASA/JPL Release
2. Cassini has safely departed Planet Earth By: Robyn Surino [1997]
3. Cruise: Challenges of Early Cassini Mission [1997] NASA/JPL Release
4. Watch Cassini-Huygens setting off for Saturn & Titan  [Oct 1997] NASA/JPL Release
5. Power to Discover: Treasure Hunts fuelled by  Plutonium [Sep 1997] By: Todd Halvorson
6. Cassini-Huygens, The Extended Mission [1997] NASA/JPL Release
7. Cassini Information  [http://nssdc.gsfc.nasa.gov/planetary/cassini.html]
8. The Saturn Tour [1997] NASA/JPL Release
9. The Huygens Probe Mission [1997] NASA/JPL  Release
10.Cassini Update, Cassini Significant Events [June 27, 2003]
11. Cassini-Huygens Operations  http://saturn.jpl.nasa.gov/operations/index.cfm NASA/JPL Release
jayabar@bmts.com  [S. Jayabarathan]

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