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  • FLUID MECHANICS  (2)
  • NAVIGATION  (1)
  • Lunar and Planetary Science and Exploration
  • 1970-1974  (3)
Collection
Keywords
  • FLUID MECHANICS  (2)
  • NAVIGATION  (1)
  • Lunar and Planetary Science and Exploration
Years
Year
  • 1
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    Strapdown platforms using redundant two-degree-of-freedom gyros (1972)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: A new concept of high reliability strapdown attitude sensing systems for space vehicles is presented. Each system utilizes a set of redundant two-degree-of-freedom gyros. An optimum system configuration is obtained for maximum system reliability and the best measurement accuracy. Improved accuracy of the final data is obtained by using the least-square data reduction technique. Each system possesses a sensor performance management feature which is capable of failure detection, faulty gyro identification, system reconfiguration, and possibly, sensor recalibration. Improvement in reliability as compared to other types of strapdown systems is demonstrated. Details of the development are described in terms of a system containing four gyros.
    Keywords: NAVIGATION
    Type: A Study of Strapdown Platform Technol.; p 37-69
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Pressure losses for laminar flow in the entrance region of ducts of rectangular and equilateral triangular cross section. (1971)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The velocity profiles upon which the pressure-loss calculations are based, are recomputed using the previously described method of reference (1960). The pressure drop is then computed using the energy integral equation; both rectangular and equilateral triangular ducts are considered. It is demonstrated that, using this equation, the pressure-drop parameter can be improved.
    Keywords: FLUID MECHANICS
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 3
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    Analysis of unsteady laminar boundary layer flow by an integral method. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Keywords: FLUID MECHANICS
    Type: ASME PAPER 72-WA/FE-2 , Winter Annual Meeting of the American Society of Mechanical Engineers; Nov 26, 1972 - Nov 30, 1972; New York, NY
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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