2. 2 APPROACH The Work Breakdown Structure (WBS) for the study is shown in Figure 2-2. This was the basic vehicle for managing the technical aspects of the program and controlling the cost. The first level breakdown conforms to the tasks described in Section 1. The second level tasks are the key activities in the program for which task managers were assigned with both financial and technical responsibilities, The man hours expended at the first level breakdown are noted in Figure 2-2 to indicate the study emphasis. The schedule for the study is shown in Figure 2-3. There were frequent reviews conducted by Lewis Research Center throughout the program, coordinated with the key decision and planning dates. Contributors at several reviews included representatives from NASA Headquarters' Office of Applications, Johnson Space Center, and the Jet Propulsion Laboratory. As shown in the schedule the Grumman Aerospace Corporation effort was reinitiated to support the Orbital Test Program development effort, and work on the final report was carried forward during the period between completion of planning for the Ground Test Program and contractual authorization to proceed on the Orbital Test Program studies.
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