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ဗွိုင်ယေဂျာစီမံကိန်း: တည်းဖြတ်မှု မူကွဲများ

ရာဇဝင်ကို အပြန်အလှန်အားဖြင့် ဝင်ကြည့်ရန်
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မြင်ကွင်းဝီကီစာသား
needs translation into Burmese
အရေးမကြီး clean up using AWB
စာကြောင်း ၂၂ -
Of the two space probes of the ''Voyager Program'', ''[[Voyager 2]]'' was launched first. Its trajectory was designed to take advantage of an unusual alignment of the planets (that occurs once every 177 years) that allowed one space probe to fly by Jupiter, Saturn, Uranus, and Neptune, if everything went well. Of course, in case of a serious malfunction, such as in all of the space probe's [[radio transmitter]]s or receivers, then that would have been the end of the long mission (to four planets), since there was not a second space probe to fill the gap. That was the gamble that NASA and the JPL were forced to take.
 
''[[Voyager 1]]'' was launched after its sister probe, but along a shorter and faster trajectory that sent it to Jupiter and Saturn sooner -- butsooner—but at the cost of not visiting any more of the outer planets. ''Voyager 1'' also had the high-priority mission of making a close fly-by of the saturnian moon [[Titan (moon)|Titan]], which was known to be quite large and to possess a dense atmosphere very much worth studying.<ref>[http://history.nasa.gov/SP-4219/Chapter11.html '' Chapter 11 "Voyager: The Grand Tour of Big Science"] (sec. 269.), by Andrew,J. Butrica, found in ''From Engineering Science To Big Science'' ISBN 978-0-16-049640-0 edited by Pamela E. Mack, NASA, 1998</ref>
 
During the 1990s, ''Voyager 1'' overtook the slower deep-space probes ''[[Pioneer 10]]'' and ''[[Pioneer 11]]'' to become the most distant manmade object from Earth, a record that it will keep for the foreseeable future. Even the faster (at its launch) ''[[New Horizons]]'' space probe will not pass it, since the final speed of ''New Horizons'' (after maneuvering within the solar system) will be less than the current speed of ''Voyager 1''.
စာကြောင်း ၁၀၄ -
| <center>Clear</center>
| <center>280–640&nbsp;nm</center>
| <center>[[File:Voyager - Filters - Clear.png|50px | center |]]</center>
| style="background:#fff;"|
|-
| <center>[[Ultraviolet|UV]]</center>
| <center>280–370&nbsp;nm</center>
| <center>[[File:Voyager - Filters - UV.png|50px | center |]]</center>
| style="background: #1d0036" |
|-
| <center>Violet</center>
| <center>350–450&nbsp;nm</center>
| <center>[[File:Voyager - Filters - Violet.png|50px | center |]]</center>
| style="background: #8300b5" |
|-
| <center>Blue</center>
| <center>430–530&nbsp;nm</center>
| <center>[[File:Voyager - Filters - Blue.png|50px | center |]]</center>
| style="background: #00d5ff" |
|-
| <center>'</center>
| <center>'</center>
| <center>[[File:Clear.png|50px | center |]]</center>
| <center>'</center>
|-
| <center>Green</center>
| <center>530–640&nbsp;nm</center>
| <center>[[File:Voyager - Filters - Green.png|50px | center |]]</center>
| style="background: #ffef00" |
|-
| <center>'</center>
| <center>'</center>
| <center>[[File:Clear.png|50px | center |]]</center>
| <center>'</center>
|-
| <center>Orange</center>
| <center>590–640&nbsp;nm</center>
| <center>[[File:Voyager - Filters - Orange.png|50px | center |]]</center>
| style="background: #ff8900" |
|-
| <center>'</center>
| <center>'</center>
| <center>[[File:Clear.png|50px | center |]]</center>
| <center>'</center>
|}
စာကြောင်း ၁၅၈ -
| <center>Clear</center>
| <center>280–640&nbsp;nm</center>
| <center>[[File:Voyager - Filters - Clear.png|50px | center |]]</center>
| style="background:#fff;"|
|-
| <center>'</center>
| <center>'</center>
| <center>[[File:Clear.png|50px | center |]]</center>
| <center>'</center>
|-
| <center>Violet</center>
| <center>350–450&nbsp;nm</center>
| <center>[[File:Voyager - Filters - Violet.png|50px | center |]]</center>
| style="background: #8300b5" |
|-
| <center>Blue</center>
| <center>430–530&nbsp;nm</center>
| <center>[[File:Voyager - Filters - Blue.png|50px | center |]]</center>
| style="background: #00d5ff" |
|-
| <center>[[Methane|CH<sub>4</sub>]]-U</center>
| <center>536–546&nbsp;nm</center>
| <center>[[File:Voyager - Filters - CH4U.png|50px | center |]]</center>
| style="background: #81ff00" |
|-
| <center>Green</center>
| <center>530–640&nbsp;nm</center>
| <center>[[File:Voyager - Filters - Green.png|50px | center |]]</center>
| style="background: #ffef00" |
|-
| <center>[[Sodium|Na]]-D</center>
| <center>588–590&nbsp;nm</center>
| <center>[[File:Voyager - Filters - NaD.png|50px | center |]]</center>
| style="background: #ffe200" |
|-
| <center>Orange</center>
| <center>590–640&nbsp;nm</center>
| <center>[[File:Voyager - Filters - Orange.png|50px | center |]]</center>
| style="background: #ff8900" |
|-
| <center>[[Methane|CH<sub>4</sub>]]-JST</center>
| <center>614–624&nbsp;nm</center>
| <center>[[File:Voyager - Filters - CH4JST.png|50px | center |]]</center>
| style="background: #ff7b00" |
|}
စာကြောင်း ၃၃၇ -
[[File:MHW-RTGs.gif|right|thumb|Radioisotope thermoelectric generators for the Voyager program.]]
 
[[လျှပ်စစ်စွမ်းအင်|လျှပ်စစ်စွမ်းအင်]] ကို ရေဒီယိုအိုင်ဆိုတုပ်သာမိုလျှပ်စစ်ဓာတ်အားထုတ်စက်([[radioisotope thermoelectric generator]]s )(RTGs)သုံးခုမှရရှိသည်။ ယင်းဓာတ်အားထုတ်စက်တို့အား ပလူတိုနီယံ-၂၃၈. They are powered by [[plutonium-238]] (distinct from the [[Plutonium-239|Pu-239]] isotope used in nuclear weapons) and provided approximately 470 [[Watt|W]] at 30 [[volt]]s [[direct current|DC]] when the spacecraft was launched. Plutonium-238 decays with a [[half-life]] of 87.74 years,<ref>[http://lanl.gov/source/orgs/nmt/nmtdo/AQarchive/97summer/Pu_238.html The Actinide Research Quarterly: Summer 1997<!-- Bot generated title -->]</ref> so RTGs using Pu-238 will lose a factor of 1−0.5<sup>{1/87.74}</sup> = 0.79% of their power output per year.
 
လွှတ်တင်ပြီး ၃၄နှစ်အကြာ ၂၀၁၁ ခုနှစ်တွင် , such an RTG would inherently produce 470 W × 2<sup>−(34/87.74)</sup> ≈ 359 W, about 76% of its initial power. Additionally, the [[thermocouple]]s that convert [[heat]] into [[electricity]] also degrade, reducing available power below this calculated level.
 
၂၀၁၁ အောက်တိုဘာတွင် ဗွိုင်ယေဂျာ၁နှင့် ဗွိုင်ယေဂျာ၂ တို့သည် ၂၆၇.၉ဝပ် နှင့် ၂၆၉.၂ဝပ်အသီးသီးသို့ စွမ်းအားကျဆင်းသွားသည်။ မူလလွှတ်တင်စဉ်ကအောက် ၅၇% ကျဆင်းသွားပြီဖြစ်သည်။ စွမ်းအင်ထုတ်လုပ်မှုသည် ပစ်လွှတ်ခြင်းမပြုမီက ကြိုတင်တွက်ဆထားသည်ထက်ပိုမိုအခြေအနေကောင်းသည်။ လျှပ်စစ်စွမ်းအင်ကျဆင်းလာသည်နှင့်အမျှ ယာဉ်ပေါ်ရှိအချို့ကိရိယာများအလုပ်လုပ်မှုရပ်ဆိုင်းသွားပြီဖြစ်သည်။
 
== ဗွိုင်ယေဂျာတို့၏ ကြယ်တာရာများသို့ ခရီး ==
စာကြောင်း ၄၃၀ -
* [http://www.heavens-above.com/SolarEscape.aspx Spacecraft Escaping the Solar System] - current positions and diagrams
* [http://www.sciencefriday.com/pages/2007/Aug/hour1_082407.html NPR: Science Friday 8/24/07 Interviews for 30th anniversary of Voyager spacecraft]
* [http://www.stickings90.webspace.virginmedia.com/voyager.htm Illustrated technical paper] by [[Raymond_HeacockRaymond Heacock|RL Heacock]], the project engineer
{{NASA space program}}
{{NASA planetary exploration programs}}
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