Rama scaled one in 500 thousand by tato_713

Last crawled date: 3 years, 4 months ago

This is the model of the colossal centrifugal alien spaceship from the Arthur C. Clarke book Rendezvous with Rama, one of the most popular hard science fiction books. I made this based on what I read from the first book on the serie and this image, apparently from the cover art of a video game, but not from any information from its sequels. I've read only an Spanish copy, so some details may be wrong because of translation issues and adaptations.

Before printing anything, please, read this paragraph. I made this in various parts, depending on the scale, so they can be printed separately, and then glued. Cities must be printed separately and they will fit very loose, so they must be fixed with hot glue, or something alike. The scales available in this post are:
One in 500 thousand. This is the smallest scale, about 10cm long. It can be made divided in north-center-south parts, or into longitudinal halves. The cities cannot be made in this scale.
One in 200 thousand. a 25cm long model. It can be made divided in north-center-south parts, or into longitudinal halves. Cities are extremely small and I am not entirely sure they can be made even using resin (SLA) printers, I don't have one to test them.
One in eighty thousand. It can be made divided in north-center-south parts, or into 12 smaller parts. This is a big model, it must be made in big printers (bigger than 25x25x20cm), or in several parts (showed in the image below). Cities may be printable even in FDM with a good configuration.
Order of parts

The file's names explained: name_1_x_10_y.stl is 1 : x * 10y. So _1_6_10_7 is 1:600000000 or one in 60 million.The accuracy of the model

The model was made taken these features as literal from the book:
The spaceship was a cylinder 50km long and 20km in diameter, although it can be expected aliens having different metrics, and these measures being actually rounded values instead of exact ones.
Everything has a triple redundancy architecture, linearly or 120 degree distribution.
The inner surface shape: concave in the north part (by its rotation), with three stairs; cylindrical plains divided by a sea: north hemisphere surface 8km from the rotational axis, and 50m above the sea level; and the south hemisphere 500m above the sea; the south pole has "horns", one bigger in the center
There are 6 "towns" on the plains:
London: closermost to a stair, a collection of tubes. It's located 15km East of Paris, which is equivalent to 120° counter clockwise.
Paris: in the middle way from the stairs to the sea. It looks like an storage section with buildings.
Rome. It's located 15km West to Paris, which is equivalent to 120° clockwise.
Moscow
Beijing
Tokio
A "city" in the middle of the sea, nicknamed "New York" after its shape. It's divided in three equally designed sections and it looks more alike a huge fabric than a city. It is located opposed to London (180°).

Some features were deliberately made different from the description in the book:
London, Paris, Rome and Moscow belong to the northern hemisphere. However, in order to keep the symmetry, I placed Moscow on the south hemisphere.
The towns were connected by "roads", but these roads are not explicit to be up or below the surrounding relief.
There are 6 trenches 100m wide that run axially on both hemispheres. Those trenches resulted to be giant lanterns. I made them wider so they are more recognisable.

I also made up a lot of details that are not described on the book:
The entrance is vaguely described, I played with its shape.
Only New York, Paris and London are described in the first book, I made the rest as cartoonish mockups of the Earther counterparts.
The cross-section features were taken from the videogame artwork; in the book the characters didn't dig below the habitable inner surface.

I spend part of my time making these models, letting them available and free for everyone. If you want to support my work, you can contribute with me here:


Other astronomical objects

Object


Scale [1:x]
K = 103 (thousand)M = 106 (million)G = 109 (billion)


Image


Inner planets and moons

Mercury
60M,
120M

Venus
60M,
120M,
250M

Earth
60M,
120M,
250M

Luna
20M,
60M

Mars
60M,
120M

Phobos and Deimos
200K,
500K


Artificial

Salyut 7
40, 48, 80, 160


Near Earth Asteroids

Moshup and Squannit
8K,
20K,
40K

Ra-Shalom
20K,
40K

Castalia
8K,
20K,
40K

Bacchus
8K,
20K

Bennu
3K,
8K

Ryugu
8K,
20K

Geographos
40K,
80K

Phaethon
40K,
80K

Itokawa
3K,
8K

Eros
200K,
500K

Mithra
20K,
40K

Golevka
8K

Toutatis
40K,
80K


Main Asteroid Belt


Gaspra
200K

Annefrank
40K,
80K

Braille
20K,
40K

Vesta
4M,
10M

Šteins
40K,
80K,
200K

Iris
2M,
4M

Hebe
1M,
2M,
4M

Lutetia
1M,
2M

Julia
1M,
2M,
4M

Mathilde
500K,
1M

Juno
2M,
4M

Ceres
4M,
10M

Pallas
4M,
10M

Kleopatra
2M,
4M

Ida
500K,
1M

Psyche
2M,
4M

Interamnia
2M,
4M

Hygiea
2M,
4M,
10M

Antiope
1M,
2M


Jovian System

Jupiter
1G

Amalthea
2M,
4M

Thebe
1M,
2M

Io
20M,
60M

Europa
20M,
60M

Ganymede
60M,
120M

Callisto
60M,
120M


Saturn System

Saturn
500M,
1G

Pan, Daphnis and Atlas
80K,
200K,
500K,
1M

Prometheus and Pandora
1M,
2M

Janus and Epimetheus
2M,
4M

Mimas
2M,
4M,
10M

Methone, Anthe and Pallene
40K,
80K

Enceladus
4M,
10M

Tethys
10M

Telesto and Calypso
200K,
500K

Dione
10M

Helene
500K,
1M

Rhea
10M,
20M

Titan
60M,
120M

Hyperion
2M,
4M

Iapetus
10M,
20M

Phoebe
2M,
4M


Uranian System

Uranus
250M,
500M,
1G

Puck
1M,
2M,
4M

Miranda
4M,
10M

Ariel
10M

Umbriel
10M

Titania
10M,
20M

Oberon
10M,
20M


Neptunian System

Neptune
250M,
500M,
1G

Larissa
2M,
4M

Proteus
2M,
4M,
10M

Triton
20M


Comets


Tempel 1
40K,
80K,
200K

Wild 2
40K,
80K

Churyumov-Gerasimenko
40K,
80K

Hartley 2
20K,
40K,
80K

Borrelly
40K,
80K,
200K

Halley
80K,
200K


Centaurs and TNOs

Hidalgo
500K, 1M

Chariklo
2M,
4M

Pluto and Charon
10M,
20M

Styx, Nix, Kerberos and Hydra
500K,
1M

Haumea, Namaka and Hiʻiaka
10M,
20M

Arrokoth
200K,
500K,
1M

Largest TNOs and their moons
10M,
20M


Extrasolar

Exoplanets
120M,
250M,
500M

Nearest white dwarfs
120M,
250M

HD 189733 b
1G

Pulsars
200K,
500K

Cygnus X-1 accretion disk
10M,
20M


Sky maps

Heliosphere
7.5*1013, 1.5*1014

Constellations
-

CMBR
2*1028


Ancient

Earth (540 Mya to 20 Mya)
60M,
120M,
250M

Luna (4 Gya)
20M,
60M


Hypothetical and simulations

Planet Nine
250M,
500M


Cube planet
60M,
120M,
250M


Science Fiction

Ghroth
4M,
10M

Arda
60M,
120M

B612
10, 20, 32, 40

Mesklin
500M,
1G

Arrakis
60M,
120M

Borg cube
20K,
40K

Pern
60M,
120M

Europa Monolith
200K,
500K

Leonora Christine
500, 600, 1K, 3K

Rama
80K, 200K, 500K

Death Star
1M, 2M

Starkiller Base
4M,
10M

Nirn, Secunda and Masser
20M,
60M,
120M

Independence Day mothership
2M,
4M,
10M

Arrival heptapod spaceship
1K,
3K,
8K

Halo Array
4M,
10M, 20M, 60M

Gem Homeworld

120M, 250M, 500M


Misc

Mars (1962 reconstruction)
60M,
120M

Flat Earth
250M

Expanding Earth
60M, 120M

Spaceship of Ezekiel
80, 160