# Table of Contents

# preface

A population of 100,000. The Gross Area Per Person must be 500 m2. Thus the decks need to have an area of 5 10 7 m2. If the ship has 5 decks, this 10 7 m2 per deck. If the deck is 10 3 m wide, it must be 10 4 long. As the length is a circumference, it must have a radius of 10 4 / 2 π = 1.6 10 3 m.

We want the artificial gravity to be around 5 m s-2.

g = r ω 2

So, ω 2 = 3 10 -3, and ω = 5 10 -2. If this ω is measured in radians per second, then the ships rotates around its axis each 100 seconds.

So, 1 rot(ation) is a hunderd seconds. 1 kilo rot = 10 5 second ≈ 1 day 1 Mega rot = 10 8 second ≈ 3 years

10 megarot = 10 9 second ≈ 30 years ≈ 1 generation

If the ships is 7000 years old, that equals 2300 megarots.