Kerbin/pl

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Kerbin jest domem rasy Kerbali, znajduje się na nim Space Center. W grze jest odpowiednikiem Ziemi. Posiada dwa księżyce, nazywane Mun i Minmus.

Kerbin trzecią planetą orbitującą centralną gwiazdę systemu - Kerbol. Jest trzecią co do wielkości planetą systemu (po Jool i Eve) i czwartym co do wielkości obiektem orbitującym Kerbol (po Tylo, jednym z księżyców Jool, który jest odrobinę większy).

Osiągnięcie stabilnej orbity nad Kerbinem jest jednym z pierwszych wielkich osiągnięć gracza. Osiągnięcie takiej orbity z trajektorią wznoszenia optymalną z punktu widzenia zużycia paliwa[1] wymaga delta-v równe od 4.45 do 4.7 km/s.[2] For many interplanetary missions, this represents over half of the flight's total delta-V requirement. (This is also true of Earth-based interplanetary spaceflights, leading one observer to remark that "If you can get your ship into orbit, you're halfway to anywhere."[3])

Topography

Topographical image of Kerbin.

Kerbin has a roughly equal distribution of surface liquid water and solid land, with polar icecaps and scattered deserts. There are mountains exceeding 3 km in height, with the tallest peak being at least 3750 m in altitude.[4]

Atmosphere

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 km).[5] In general, the atmospheric pressure and density on Kerbin, at an altitude expressed in meters, are:

(expressed in kg/m3)

Orbits

Geosynchronous orbit is achieved at an altitude of 0,00 m (1008.9 m/s). A semi-synchronous orbit with an orbital period of 1/2 of Kerbal (3 hours or 10800 seconds) is achieved at an altitude of 0,00 m with an orbital velocity of 0,00 m/s.

Interplanetary Travel

From the lowest stable orbit around Kerbin (70 km), the amount of delta-V needed to reach the orbits of other celestials is as follows:

Body Delta-V
Mun ~860 m/s
Minmus ~930 m/s
Eve ~1033 m/s
Duna ~1060 m/s
Moho ~1676 m/s
Jool ~1915 m/s

Reference Frames

Paid (0.17) Demo (0.13.3)
Rotational/Inertial transition 100,000 m 70,000 m
Warp Minimum Altitude
1x Any
2x n/a 0 m
5x 69,078 m (above the atmosphere)
10x 69,078 m (above the atmosphere)
50x 69,078 m 150,000 m
100x 120,000 m 300,000 m
1,000x 240,000 m 600,000 m
10,000x 480,000 m 1,200,000 m
100,000x 600,000 m n/a

Gallery

Changes

0.17
  • Improved atmosphere visuals.
0.15
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.[6]
0.12
0.11
  • Terrain overhaul, oceans became wet.
0.10.1
  • Atmosphere extended from ~34,500 m to ~69,000 m.
?
  • Initial Release

Uwagi

  1. Trajektoria wznoszenia optymalna dla zużycia paliwa to taka, która (a)minimalizuje straty prędkości spowodowane tarciem atmosfery i oddziaływaniem grawitacyjnym i (b) jest skierowana na wschód (kierunek 90 stopni), dzięki czemu pojazd zyskuje 174.5 m/s prędkości orbitalnej za darmo dzięki rotacji planety.
  2. Kerbin Delta-V Chart
  3. Robert Heinlein, quoted on page 194 of A Step Farther Out by Jerry Pournelle.
  4. http://kerbalspaceprogram.com/forum/index.php?topic=11388.msg176509#msg176509 [Broken Link]
  5. Forum thread 16000, "[KGSS] Examining Kerbin's atmosphere"
  6. http://kerbalspaceprogram.com/forum/index.php?topic=6446.0 [Broken Link]


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