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Airlock

Utilizing the great volume of the S-IVB tanks, the company built the Orbital Workshop for NASA's Skylab program, combining the S-IVB structure equipped as a laboratory with an Airlock containing controls, a power distribution system, tanks for consumables and a tunnel for entering and leaving the workshop and for extravehicular activities. McDonnell Douglas' work on this early experimental "space station" and on launch systems, airframes and spacecraft systems provided the base for advanced work on the Space Shuttle and the International Space Station.

Airlock