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The adoption of turbine engines for automotive power plants has been hampered by the high cost, high leakage and high wear rate of present designs of ceramic-matrix regenerators. Proposals are made and analyzed here for design directions to achieve substantial improvements in all three areas. These include lower-cost extruded and pressed matrices; and clamping seals coupled with incremental movement of the rotary-regenerator matrix.

Terminal design has emerged as having critical importance in the planning of dual-mode transportation in cities because the very high line-haul capacity of automated guideways can lead to large space requirements at entry and exit points. In this paper the influence of vehicle size, the method of guidance and propulsion, and the network terminal layouts on the space requirements for the overall transportation systems are discussed. Forecasts are made of the manner in which dual-mode transportation will first be installed.