lube Subarray Installations One of the prime advantages of the RCR is its adaptability to numerous amplitron or klystron tube installations. Rockwell has studied various tube/ RCR integrated and non-integrated concepts to determine potential solutions to the weight and high-temperature interface problem. Figures 2.3-14 through 2.3-18 illustrate various amplitron and klystron mounting techniques to the RCR. Figure 2.3-14, which shows amplitron mounting, illustrates the configuration where the back face of the RCR is integral to the amplitron. It should be recognized that these techniques are advanced and unproven; however, it offers the MPTS antenna designer alternative installation concepts. The simplicity of the RCR for maintenance also is shown in Figure 2.3-14. The RCR modes for various installation concepts will vary as a function of the power density or structural integrity. In the low density areas such as shown in Figure 2.3-15, a TE70 RCR may be used. In the higher density areas of the array a TE30 RCR can be used. The interconnecting feed lines of the RCR as shown in Figures 2.3-15 through 2.3-18 represent implementation of Rockwell's phased array retrodirective network. Phase Error Effect on SPS Transmit Array Although this subject area needs to be investigated in far greater detail, the following simple analysis will yield some insight into the system efficiency versus aperture phase error. Assume that the residual retrodirective phase error is cumulative and a linear phase error across the 1-km aperture results. Figure 2.3-14. RCR Element Maintenance
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