The following post describes the basic specifications of the “Uptown” component of the next generation of space stations.

- is a ring 148 meters in diameter and 47.8 meters in depth (from “zero-gee viewing window” to tip of rear-most radiator panel).
- rotates at two revolutions per minute, generating
**one-third Earth gravity**and 15.5 meters/sec (approximately 34mph) angular velocity along the rim. - has a total internal pressurized
**volume of 18,360 cubic meters**. - generates 2.2 megawatts of baseline electrical power.
- can accomodate 100 people in 11 residence quarters:
- 4 “tourist” quarters with a capacity for 4 tourists each, for a total of 16 people.
- 7 “non-tourist” quarters with a capacity of 12 non-tourists each, for a total of 84 people.

- provides 4,290 cubic meters of pressurized volume available for private non-residential use and 10,440 cubic meters of shared non-residential pressurized volume.
- provides 1,200 cubic meters of shared zero-gee pressurized volume, including a 25 meter wide viewing window at the center of the station.
- has a ‘dry’ or ‘vacant’
**mass of 2,548,000 kilograms**. ‘Vacant mass’ is the mass of the station not counting internal furnishings and non life-support related equipment and materials. - is estimated to cost $60,000,000,000 to build, not including launch costs.
- will cost $6,489,756,000 to launch to low earth orbit, assuming a launch cost of $2,547 per kilogram – the proposed cost-per-kilogram to orbit for the Falcon Heavy.
- will require at least 620,500 kilograms of water per year for life support purposes. Assuming 90% recycling (ISS currently recycles 93%), 62,050 kg of water per year required for life support.

- is composed of:
- 28 BA330-like modules (green), each 9.5 meters in length and 6.7 meters in diameter and each with an internal pressurized volume of 330 cubic meters. Each masses 20,000 kilograms and is estimated to cost $100 million.
- 24 custom-made ‘corridor’ modules (pink), each 19.3179 meters in length on the exterior side and 5 meters in width on the rimward side, each with a ‘foyer’ 6.7 meters long and 2 meters in width on the rimward side. Internal pressurized volume for each corridor is 330 cubic meters. Each masses 30,000 kilograms and is estimated to cost $200 million.

- 24 ‘spine’ trusses (blue), each 18.9274 meters in length on the rimward facing side. Unpressurized but very high strength. ‘Corridor’ segments are connected to this spine, as well as the support trusses for the power plants and radiators. It is designed to transmit rotational forces while the station is under construction or being upgraded. Each masses 10,000 kilograms and is estimated to cost $100 million.
- 88 Suncatcher-like concentrating solar power plants (yellow) each occupying a volume 6.9401 meters in diameter and 5 meters in depth. The Suncatchers will be parabolic, unlike the cylindrical shape shown in the graphic (cylinders are easier to sketch). Each Suncatcher will generate 25 KW baseline power for a total of 2,200 KW produced while the station is facing the Sun. This energy will charge batteries distributed throughout the corridor and BA330s modules for use when the station is transiting the nightside of the Earth. Each Suncatcher masses 1,000 kilograms and is estimated to cost $100 million.
- 90 radiators (brown), each 125 square meters in size, each able to dissipate 149 KW of energy for a total dissipation capacity of 13,140 KW. Each masses 10,000 kilograms and is estimated to cost $100 million.

Unit | Mass (kg) per unit | Cost ($millions) per unit | # of units | total mass (kg) | total cost of materials ($millions) |

“BA330” | 20,000 | 100 | 28 | 560,000 | 2800 |

“Corridor” | 30,000 | 200 | 24 | 720,000 | 4800 |

“Spine truss” | 10,000 | 100 | 24 | 240,000 | 2400 |

“Power plant” | 1,000 | 100 | 88 | 88,000 | 8800 |

“Radiator” | 10,000 | 100 | 90 | 900,000 | 9000 |

“Zero gee” | 40,000 | 200 | 1 | 40,000 | 200 |

Total | 2,548,000 | 28000 | |||

Note: All figures are estimates. Materials cost is more than doubled to $60B to account for R&D and operations costs. |

Get the model on Sketchup and check it out for yourself. Specs on Refinery are coming soon!