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  • 1
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    Comparison of log volume estimates using formulae for log center of gravity and center of volume (1994)
    Canadian Science Publishing
    Details
    Publication Date: 1994-01-01
    Description: Formulae for estimating log center of gravity for logs of uniform density are presented that are based on frusta of simple solids of revolution. The center of gravity position for logs shaped as cones, paraboloids, paracones, neiloids, and logs having intermediate shapes can be estimated by using these formulae. A comparison of log volume estimates was made using the center of gravity and the center of volume locations as interlog positions for diameter measurements. The center of volume was found to be better than the center of gravity for log volume estimation. However, formulae for log center of gravity should be useful for engineering applications with logs of uniform density.
    Print ISSN: 0045-5067
    Electronic ISSN: 1208-6037
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Canadian Science Publishing
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    PAPER CURRENT
  • 2
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    Preliminary design of the Space Station internal thermal control system (1987)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The baseline preliminary design configuration of the Internal Thermal Control system (ITCS) of the U.S. Space Station pressurized elements (i.e., the Habitation and U.S. Laboratory modules, pressurized logistics carrier, and resources nodes) is defined. The ITCS is composed of both active and passive components. The subsystems which comprise the ITCS are identified and their functional descriptions are provided. The significant trades and analyses, which were performed during Phase B (i.e., the preliminary design phase) that resulted in the design described herein, are discussed. The ITCS interfaces with the station's central Heat Rejection and Transport System (HRTS), other systems, and externally attached pressurized payloads are described. Requirements on the ITCS with regard to redundancy and experiment support are also addressed.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: SAE PAPER 871505
    Format: text
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    NASA TECHNICAL REPORTS
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