Both the waveguide and structure may well employ manufacturing modules (Ranked 6), however, until the materials, waveguides and structure are better understood and until it is assured that the approaches used do not adversely effect the open cathodes on the rf generators, applicable technology development should be limited. It should be pointed out that Power Source and Flight Operations technologies are not addressed, rated nor ranked as they should be upon completion of more in-depth investigations in those areas. Furthermore, a current risk rating of four does not mean that the program would be adequately supported if those having risk rating of three or less were significantly delayed. The area which should receive attention with most urgency in integrated ground testing has to do with the total phase front establishment, command and control. Objectives for the test and the associated technology center around the following: a. Phase Control Subsystems b. Command Control Subsystems (ground and orbital microwave systems) c. Driver Electronics d. dc-rf converters e. Waveguide f. Structure Other areas such as Rectenna, Power Distribution, Power Subsystems and Attitude Control will also be represented or simulated to some extent; however, they would be in a "support" category for this activity. Details of the ratings and assessments are given in the following charts.
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