BETWEEN EARTH AND MOON ⌄
Concordia.A world in motion.
A city turns inside this vast habitat. Follow one family from a quiet morning at home, through its streets and stations, and out into cislunar space.
▶ Step inside ↗ Fly by the ship ↗
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LIVE LOCATION ⌄
Groundside · Arbor Park
· Inner surface
LOCAL GRAVITY 1.00 g
AXIS DISTANCE 2,500 m
ANGULAR MOMENTUM BALANCED ⌄
Spin seen from the spaceport (+X) end. Shares of the four city rotors' total.
−0.0626 rad/s · 100 s/turn −50.0%
+0.0626 rad/s · 100 s/turn +50.0%
CITY NET +0.0%
−0.044 rad/s · 143 s/turn −4.0%
Momentum ringshold it and trim cargo moves +4.0%
NET +0.000%
Turns like a ship. A small thrust starts a turn and a small thrust stops it.No gyroscopic side-step. Push a spinning body to turn it and it swings at right angles instead.The rings take the swings. Cargo moves shift the industrial rotor by a fraction of a percent. The rings follow, and bearing motors trade the momentum for electricity, not propellant.
If all four city rotors turned one way, a 1° a day turn of the axis would take 4.5 MN at each hull end, nonstop. Cancelled in pairs, it takes about 4 kN for a day to start and a day to stop.
⌖ OPEN HABITAT MAP M CLICK SCENE TO LOOK AROUND · WASD TO WALK
01 STORY
02 EXPLORE
03 ENGINEER
✳ AN ORDINARY MORNING, 2,500 METERS FROM THE AXIS
ASSIST COCKPIT
AIRSPEED 0
HEIGHT 0
FELT WEIGHT 0
HEADING -
CLIMB 0
AIR 100%
LIFT
POWER
A 21 km cislunar station between Earth and the Moon: four rotating habitation cylinders for about a million residents, spun in counter-rotating pairs so the station carries no net spin, with an industrial rotor, a stationary spine, a shipyard, a spaceport and a passenger launcher.
Inspired by Isaac Arthur's Science & Futurism episode The O'Neill Cylinder Space Habitat: Islands In The Sky , and by Gerard K. O'Neill's The High Frontier (1976).
Made by David Veksler. Credits and licences · Source on GitHub