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  • Other Sources  (2)
  • ELECTRONICS AND ELECTRICAL ENGINEERING  (1)
  • RESEARCH AND SUPPORT FACILITIES (AIR)  (1)
  • palaeontology, biogeography
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    NASA low-speed centrifugal compressor for fundamental research (1983)
    In:  Other Sources
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    Publication Date: 2019-06-28
    Description: A new centrifugal compressor facility being built by the NASA Lewis Research Center is described; its purpose is to obtain 'benchmark' experimental data for internal flow code verification and modeling. The facility will be heavily instrumented with standard pressure and temperature probes and have provisions for flow visualization and laser Doppler velocimetry. The facility will accommodate rotational speeds to 2400 rpm and will be rated at pressures to 1.25 atm. The initial compressor stage for testing is geometrically and dynamically representative of modern high-performance stages with the exception of Mach number levels. Design exit tip speed for the initial stage is 500 ft/sec with a pressure ratio of 1.17. The rotor exit backsweep is 55 deg from radial. The facility is expected to be operational in the first half of 1985.
    Keywords: RESEARCH AND SUPPORT FACILITIES (AIR)
    Type: AIAA PAPER 83-1351
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Switched electrical networks and bilinear equations (1974)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: An investigation is conducted concerning the state equations which arise in the description of power processing systems. Attention is given to the role played by Lie groups and Lie algebras in the characterization of the dynamical features of the systems. The bilinear equations used for the representation of the network characteristics are discussed along with the nature of the solutions for the equations. The application of the described approaches is illustrated with the aid of a number of network examples.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: Annual Allerton Conference on Circuit and System Theory; Oct 03, 1973 - Oct 05, 1973; Monticello, IL
    Format: text
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    NASA TECHNICAL REPORTS
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