Integrated requirements for a space station

As the f i r s t s tep i n NASA's planning f o r a pot en t i a l space s t a t ion system, a major e f f o r t was undertaken to define r e a l i s t i c missions tha t would be enabled by o r have materially benefitted from the permanent presence of man in space. Studies were conducted by NASA advisory boards, in-house panels, and industry under contract t o NASA. Additional studies were undertaken by the international community. The r e su l t s of these studies have been integrated i n t o a single time-phased mission s e t t ha t provides the foundation f o r current studies of space s t a t ion system architecture. needs of missions in the science and applications, commercial, and technology development areas, the space s t a t ion must be a research laboratory, an observatory, a service center, a communications and data processing mode, a t ransportat ion mode, a s to rage f a c i l i t y , a n d a construction/assembly base. To meet the