Design, tech, engineering and science. Head of Design and User Research.
Public
Edited
Nov 20, 2022
Importers
launchYear = 2100
cycleZeroE = launchYear + shipsRaw[0].durationYears // Year when first ship landed, after traveling 60 years
cycleInEarthDays = planet.rotationInEarthDays
cycleInEarthYears = planet.rotationsInCycle * planet.rotationInEarthDays / earth.rotationsInCycle
cyclesInEarthMonth = cyclesInEarthYear / 12
cyclesInEarthQuarter = cyclesInEarthYear / 4
cyclesInEarthYear = 1 / cycleInEarthYears
ship = ships[3]
ships = shipsRaw.map(enrichShip)
shipsRaw = [
{
launchCrew: 45,
durationYears: 60,
arrivalCycleE: 0
},
{
launchCrew: 75,
durationYears: 40,
arrivalCycleE: 10
},
{
launchCrew: 120,
durationYears: 30,
arrivalCycleE: 20
},
{
launchCrew: 418,
durationYears: 18,
arrivalCycleE: 30,
gravityG: 0.3,
r: 70
},
{
launchCrew: 600,
durationYears: 14,
arrivalCycleE: 45,
gravityG: 0.3,
r: 70
},
{
launchCrew: 800,
durationYears: 14,
arrivalCycleE: 48,
gravityG: 0.3,
r: 70
},
{
launchCrew: 800,
durationYears: 14,
arrivalCycleE: 49,
gravityG: 0.3,
r: 70,
rpm: 0.5
},
{
launchCrew: 800,
durationYears: 14,
arrivalCycleE: 52,
gravityG: 0.3,
r: 70,
rpm: 0.5
}
]
function enrichShip(ship, i) {
const launchCycleE = ship.arrivalCycleE - ship.durationYears;
const d = (ship.r || 0) * 2
const circ = d * pi
return {
...ship,
i,
name: `G${i}`,
d,
circ,
launchCycleE,
launchCycle: launchCycleE * cyclesInEarthYear,
arrivalCycle: ship.arrivalCycleE * cyclesInEarthYear,
launchYear: cycleZeroE + launchCycleE,
arrivalYear: cycleZeroE + ship.arrivalCycleE,
duration: ship.durationYears * cyclesInEarthYear,
gravity: (ship.gravityG || 0) * g
};
}
star = proximaCentauri
proximaCentauri = enrichStar({
name: 'Centaur',
fullName: 'Proxima Centauri',
solarMass: 0.1221,
solarRadius: 0.1542
})
sol = enrichStar({
name: 'Sol',
fullName: 'Sol (Earth\'s sun)',
solarMass: 1,
solarRadius: 1
})
barnard = enrichStar({
name: 'Barnard',
fullName: 'Barnard\'s star',
solarMass: 0.144,
solarRadius: 0.196
})
function enrichStar (data) {
const radius = data.solarRadius * 696342 * kilo
return {
...data,
mass: data.solarMass * solarMass,
radius,
diameter: 2 * radius
}
}
planet = proximaCentauriB
function enrichPlanet(data) {
const distance = (data.distanceLy || 0) * ly
const radius = data.radiusE * earthRadius;
return {
...data,
distance,
distancePc: distance / pc,
mass: data.massE * earthMass,
orbitalSpeed: (data.orbitalSpeedKmh || 0) * kmh,
orbitalDistance: data.orbitalDistanceAu * au,
radius,
diameterE: data.radiusE,
diameter: 2 * radius,
gravity: data.gravityG
};
}
earth = enrichPlanet({
name: 'Earth',
fullName: 'Earth',
star: sol,
distanceLy: 0,
massE: 1,
orbitalSpeedKmh: 107.208,
orbitalDistanceAu: 1,
radiusE: 1,
gravityG: 1,
rotationsInCycle: 365.256363004,
rotationInEarthDays: 1
})
proximaCentauriB = enrichPlanet({
name: 'Hera',
fullName: 'Proxima Centauri b',
star: proximaCentauri,
distanceLy: 4.2,
massE: 1.173,
orbitalDistanceAu: 0.04856,
radiusE: 1.3,
gravityG: 1.0261,
// Tidally locked to star
rotationsInCycle: 1,
rotationInEarthDays: 11.2
})
barnardB = enrichPlanet({
name: 'Barnard b',
fullName: 'Barnard\s star b (GJ 669)',
distanceLy: 6,
massE: 3.23,
orbitalDistanceAu: 0.404,
radiusE: 1.25,
gravityG: 2.07,
rotationsInCycle: 20, // ???
rotationInEarthDays: 232.8
})
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