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| Modular Station 1972 MSFC Modular Station 1972 Credit: NASA via Marcus Lindroos. 57,937 bytes. 596 x 471 pixels. |
| astronautix.com | Modularised Space Station |
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| Modular Station 1972 MSFC Modular Station 1972 Credit: NASA via Marcus Lindroos. 57,937 bytes. 596 x 471 pixels. |
In view of the suspension of Saturn V production, alternative launch approaches and station configurations were investigated by NASA and its contractors in the 1970-1972 period. These included the combination of an expendable upper stage like the Saturn S-II or S-IVB mounted on the then-planned Shuttle recoverable booster to retain the potential to orbit monolithic core space stations. After the shuttle go-ahead Congress and President Nixon's Office of Management and Budget indicated they were prepared to pay for only one project at a time. Studies then moved to station concepts where the core was modularised so that it could be carried inside the Shuttle orbiter payload bay. These 4.5-meter diameter modules would then be assembled into a cluster in orbit with the same functional capability as the monolithic station concepts. In these configurations, it proved advantageous to use floors arranged parallel rather than perpendicular to the cylinder axis. The North American Rockwell and McDonnell-Douglas space station study contracts were extended until January 1972 to cover modular space station work. NASA was still hoping to launch a smaller space station in 1978, but the budget crunch soon forced the agency postpone its space station plans to the 1980s. When all Saturn V production capability was irrevocably lost in the early 1970’s, these studies formed the basis of what would later be the International Space Station.
 | Modular Station 1971 - Rockwell Modular Station 1971 Credit: NASA via Marcus Lindroos. 56,560 bytes. 561 x 429 pixels. |
Craft.Crew Size: 12. Design Life: 10 years. Maximum Diameter: 90.0 m. Total Mass: 200,000 kg. Electric system: 25.00 total average kW. Electrical System: Solar panels 930 m2.
 | Modular Station 1971 Credit: NASA via Marcus Lindroos. 52,108 bytes. 599 x 478 pixels. |
 | Modular Station 1971 - McDonnell Douglas Modular Station 1971 Credit: NASA via Marcus Lindroos. 46,081 bytes. 404 x 480 pixels. |
 | 1969 Modular Station Credit: NASA. 7,978 bytes. 317 x 380 pixels. |