Difference between revisions of "Kerbin/sv"

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{{Infobox/Body}}
 
  
'''Kerbin''' är Kerbal Space Programs analog av människornas planet jorden. Planeten Kerbin är hemplaneten till de gröna varelserna [[Kerbal]]s. Det är även denna planet som står i centrum i spelet - [[Kerbal Space Center/sv|Kerbal Space Center]] ligger nämligen där. Kerbin har två [[månar]]: den ena med namnet '''[[Mün]]''', som också är den största och närmaste liggande till Kerbin. Den andre månen heter '''[[Minmus]]''', den är minst och ligger längst bort från Kerbin räknat.
 
 
Kerbin är den tredje planeten i omloppsbana räknat runt stjärnan [[Kerbol/sv|Kerbol]]. Kerbin är den tredje största planeten (efter [[Jool/sv|Jool]] och [[Eve/sv|Eve]]). Den är också den fjärde största himlakroppen runt Kerbol.
 
 
Att lyckas komma upp i omloppsbana runt Kerbin är något av de första milstolparna en spelare brukar uppnå. Att lyckas skapa en sådan omloppsbana med optimalt bränsleanvändande uppskjutning<ref>A fuel-optimal ascent is one which (a) minimizes velocity losses to gravity and [[atmosphere|atmospheric drag]] and (b) launches eastward (toward the 90 degree heading) to gain 174.5 m/s of orbital velocity for free, thanks to Kerbin's rotation.</ref> kräver en delta-V på ≈4500&nbsp;m/s, <ref>See [http://forum.kerbalspaceprogram.com/showthread.php/24017-Least-delta-v-to-orbit this challenge on the forum] and a popular [http://i.imgur.com/CEZS1.png Kerbin delta-V chart]</ref> vilket är den andra största delta-V-förändringen i spelet efter [[Eve/sv|Eve]]. För många interplanetariska uppdrag uppgör denna delta-V-kostnad hälften av uppdragets totala delta-V-kapacitet. Detta stämmer även med riktiga rymdresor på jorden, vilket har gett oss citatet:
 
{{Quote|If you can get your ship into orbit, you're halfway to anywhere.|Robert Heinlein|quoted on page 194 of ''A Step Farther Out'' by Jerry Pournelle}} vilket kan direktöversättas till "Om du kan få upp ditt skepp i omloppsbana är du halvvägs till en resa var du vill".
 
 
 
== Topografi ==
 
[[File:Kerbin heightmap.jpg|thumb|left|Topografisk representation av Kerbins yta i version .18.2. Klicka för högre upplösning. av Zeroignite]]
 
Kerbin har en ganska jämlik spridning av flytande vatten och land, med polarisregioner och spridda öknar.
 
Det finns berg som stiger upp till 6&nbsp;km över havet, där det högsta berget är 6767 meter över havet. Den lägsta punkten ligger nästan 1.4 kilometer under havsytan.
 
 
Kerbin shows signs of having been impacted by an asteroid or comet. That is visible in the large crater in the western hemisphere. The crater's central peak is visible from orbit and was caused by the compression followed by the rebound of material in the center of the crater.
 
<div style="clear:left;"></div>
 
== Atmosfär ==
 
<!-- SPECULATION: Kerbin has an atmosphere of unknown composition, though because Kerbin has plants and animals, it can be assumed there is O<sub>2</sub>, N<sub>2</sub>, and CO<sub>2</sub>. -->Kerbin's [[atmosphere]] contains oxygen and extends to roughly 69,078 meters. Its atmosphere becomes exponentially less dense as altitude increases (with a scale height of 5&nbsp;km).<ref>{{forum link|threadID=16000|threadName=&#91;KGSS&#93; Examining Kerbin's atmosphere}}</ref> In general, the atmospheric pressure on Kerbin, at an altitude expressed in meters, is:
 
 
: <math>p_k = e^{-altitude/5000}</math>
 
 
The following table gives approximation of terminal velocities at different Kerbin altitudes. These are also the velocities at which a ship should travel for a fuel-optimal ascent from Kerbin, given the game's model of atmospheric drag (0.18.1).<ref>http://forum.kerbalspaceprogram.com/showthread.php/6664-Mini-challenge-max-altitude-with-this-supplied-spacecraft?p=100912&viewfull=1#post100912</ref>
 
 
{| class="wikitable"
 
|-
 
! Altitude (m) !! Velocity (m/s)
 
|-
 
|    0 || 97.3
 
|-
 
|  1000 || 110
 
|-
 
|  3000 || 130
 
|-
 
|  5000 || 160
 
|-
 
|  8000 || 215
 
|-
 
| 10000 || 260
 
|-
 
| 15000 || 425
 
|-
 
| 32000 || 2250
 
|}
 
 
== Omloppsbanor ==
 
[[File:Sputnik in Kerbin's orbit.png|thumbnail|left|A Stayputnik Orbiter]]
 
[[w:Geosynchronous orbit|Geosynchronous orbit]] is achieved at an altitude of
 
{{OrbitAltitude|b=Kerbin|f=k}} (1008.9&nbsp;m/s).  From a 70&nbsp;km low equatorial orbit, the periapsis maneuver requires 676.5&nbsp;m/s and the apoapsis maneuver requires 434.9&nbsp;m/s. A [[w:semi-synchronous orbit|semi-synchronous orbit]] with an orbital period of 1/2 of Kerbin's rotation period (3 hours or 10800 seconds) is achieved at an altitude of
 
{{OrbitAltitude|b=Kerbin|f=k|pf=1/2}} with an orbital velocity of
 
{{OrbitVelocity|b=Kerbin|pf=1/2}}.
 
<div style="clear:left;"></div>
 
 
== Interplanetära Resor ==
 
 
From the lowest stable orbit around Kerbin (70&nbsp;km), the amount of delta-V needed to reach the orbits of other celestials is as follows:
 
 
{| class="wikitable"
 
 
!Body
 
!colspan="2"|Delta-V
 
|-
 
| [[Mün]]
 
|colspan="2"| ~860&nbsp;m/s
 
|-
 
| [[Minmus]]
 
|colspan="2"| ~930&nbsp;m/s
 
|-
 
| [[Eve]]
 
|colspan="2"| ~1033&nbsp;m/s
 
|-
 
| [[Duna]]
 
|colspan="2"| ~1060&nbsp;m/s
 
|-
 
| [[Moho]]
 
|colspan="2"| ~1676&nbsp;m/s
 
|-
 
| [[Jool]]
 
|colspan="2"| ~1915&nbsp;m/s
 
|-
 
 
| [[Eeloo]]
 
|colspan="2"| ~2100&nbsp;m/s
 
|-
 
| [[KEO]] (comparison)
 
|colspan="2"| ~1120&nbsp;m/s
 
|-
 
|}
 
 
== Referensramar ==
 
{{:Kerbin/RefFrame}}
 
 
== Galleri ==
 
<gallery>
 
Kerbin map from 0.14.jpg                  | A projection map of Kerbin, as of {{version|0.14.1|}} and before (including the demo).
 
Kerbin color.png          | An accurate full-colour projection map of Kerbin as of {{version|0.14.2|}} to {{version|0.17.1|}}
 
KerbinDeltaVMap.png        | A map displaying the delta V needed from/to Kerbin
 
Kermmunist_Launch_Site.png | The second launch site (currently unused).
 
Kerbin_mun_minmus.jpg | Kerbin, Mün and Minmus.
 
kerbin map 800.gif | A topographic heightmap of Kerbin made with the ISA MapSat plugin
 
Kerbinmun500550km.png      | Kerbin and the Mun, barely visible from ~500,550,000m
 
Kerbin ISA Topo.png | Topographical image of Kerbin '''from 0.17.1'''. The terrain is slightly different in the latest version.<ref>http://forum.kerbalspaceprogram.com/entry.php/247-A-Brave-New-World</ref>
 
</gallery>
 
 
== Ändringar ==
 
;{{Version|0.18|}}
 
*Terrain overhaul: Entire planet redo. Deserts, darker and greener grass, islands, darker ocean/water, snow capped mountains. Looks more realistic.
 
*Several [[List of easter eggs|Easter Eggs]] added.
 
*Airport added to island off of KSC coastline. (Not a launching point)
 
;{{Version|0.17|}}
 
* Improved atmosphere visuals. 
 
;{{Version|0.15|}}
 
* [[Minmus]] added.
 
;{{Version|0.14.2|}}
 
* Much more varied and taller terrain added. Prior to this, some mountain ranges exceeded 600 m in height, but the tallest point was at an altitude of approximately 900 m.
 
;{{Version|0.12|}}
 
* [[Mün]] added.
 
;{{Version|0.11|}}
 
* Terrain overhaul, oceans became wet.
 
;{{Version|0.10.1|}}
 
* Atmosphere extended from ~34,500 m to ~69,000 m.
 
;{{Version|?|}}
 
* Initial Release
 
 
== Referenser ==
 
<references />
 
 
{{Celestial Bodies}}
 
[[Category:Celestials/sv]]
 
[[Category:Planets/sv]]
 

Revision as of 18:12, 17 March 2017