SPACELAB USER IMPLEMENTATION ASSESSMENT STUDY VolumeⅠ Concept Development and Evaluation

摘要

Subjective factors indicate a preference for Concept IV/VIII because of the diversified nature of the investigations/applications of the ATL program and the necessity for direct control and cognizance of all activities through Level III integration. Banking of the concepts by agency costs for both mission-unique and sustaining cost categories results in a preference (in descending order) of V, IV/VIII, III/VI, I, and II/VTI. Non-recurring cost evaluations indicated that for the ATL program, the preferred concepts (in descending order) were III/VI, IV/VIII, and V.