I M131 chair control Sleep compartment 70 sq ft II Head 30 sq ft Wardroom 97 sq ft III M507 gravity substitute work bench Experiment compartment 181 sq ft M171 gas analyzer M171 helmet stowage ESS IV M092 LBNPD Electric power control console M131 rotating chair
The upper portion contains a large work-activity area, water-storage tanks, food freezers, film vaults, and experiment equipment.
The Airlock Module enabled spacesuited crew members to make excursions outside the Skylab to replace or adjust equipment, change film, or carry out other extra-vehicular activities. This capability was vital to emergency repairs by the astronauts on the first mission. The Airlock Module was attached to the OWS and passage to the module was accomplished through a hatch which connected the module to the interior of the workshop. When an astronaut entered the module, he would vent the atmosphere of the module into space. When the pressure in the airlock reached zero, the crew member could open the outer hatch and float out into space.
75. Airlock Module.
The Multiple Docking Adapter (MDA) was used by crews arriving or departing from the Skylab workshop. The Apollo command/service modules delivered crews to the MDA from which the astronauts could enter Skylab through the hatch in the docking port. In an emergency, two command/service modules could dock at the MDA. The MDA also held equipment for earth resources multispectral photography, materials processing, and astronomy. The Apollo Telescope Mount (ATM) was on top of and controlled by the MDA. It contained six astronomical instruments to obtain information about the Sun.
76. Multiple Docking Adapter.
Solar energy is the prime source of electric power on Skylab. Two systems of solar electric-cell arrays—one wing on the OWS and four panels on the ATM—deployed after the Skylab reached orbit. Principal contractors: OWS—McDonnell Douglas Astronautics Company; AM—McDonnell Douglas Astronautics Company; MDA—Martin Marietta Aerospace.