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As the automotive industry demands high efficiency in performance to cost ratio, engineered polyolefins gain more prominence, particularly in the hard instrument panel application. These engineered polyolefins are designed to provide a good balance in stiffness and impact properties, as well as excellent surface durability, weatherability and moldability.

A test program for two Pressurized Mating Adapter (PMA-1) Multiplxer/Demultiplexer (MDM) heat pipe radiator assemblies was successfully conducted at the Boeing Space & Defense Systems in Huntington Beach, California. The program objectives were to verify that the test articles would function after being exposed to simulated cargo bay acoustic loads and thermal cycling stresses in the worst case on-orbit environment. This paper presents the testing approach, setup, instrumentation, procedures and results. Correlation of the mathematical model with the test results is also presented.

A power conversion subsystem consisting of an engine, an alternator, and auxiliaries is an important portion of most parabolic dish solar thermal power systems. Requirements and constraints have been established for such power conversion subsystems in the post-1985 time frame on the basis of expected needs of commercial parabolic dish power systems. To be competitive with conventional power systems, solar thermal systems using dish concentrators will need power conversion subsystems rated at less than 40 kW, with a net efficiency of 40 percent at full power and 37 percent at half-power. Time between major overhauls should be at least 50,000 hours of solar operations. Minor maintenance and lubrication for a production subsystem should not exceed four times per year and, if possible, should not take more than one man-hour each time. The subsystem should operate properly at any angle to the horizontal.