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  • Chemistry  (10)
  • General Chemistry  (4)
  • MECHANICAL ENGINEERING  (3)
  • Aphis fabae  (1)
  • 11
    Electronic Resource
    Electronic Resource
    Ueber die Indigprobe (1842)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 26 (1842), S. 217-225 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.18420260143
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    Paper (German National Licenses)
    Fulltext
  • 12
    facet.materialart.
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    Some preliminary results of brush seal/rotor interference effects on leakage at zero and low rpm using a tapered-plug rotor (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Some preliminary brush seal leakage results for ambient-temperature air are presented. Data for four nominal brush-rotor radial clearances of -0.09, -0.048, -0.008, and 0.035 mm were taken by using a tapered plug rotor at 0 and 400 rpm with rotor runout of 0.127 mm peak to peak. The brush seal nominal bore diameter was 38 mm with 0.05-mm bristles at 200 bristles/mm of circumference and a 0.61-mm fence height. Leakages were greater than predicted, but agreement was reasonable. Leakage rates were not significantly altered by hysteresis or inlet flow variations. Visualization studies showed that the bristles followed the 400-rpm excitation, and loading studies indicated that bristles slid relative to one another.
    Keywords: MECHANICAL ENGINEERING
    Type: AIAA PAPER 91-3390
    Format: text
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    NASA TECHNICAL REPORTS
  • 13
    facet.materialart.
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    A bulk flow model of a brush seal system (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Fibers can be readily fabricated into a variety of seal configurations that are compliant and responsive to high speed or lightly loaded systems. A linear, circular, or contoured brush seal system is a contact seal consisting of the bristle pattern and hardened interface. When compared to a labyrinth seal, the brush seal system is superior and features low leakage, dynamic stability, and permits compliant structures. But in turn, the system usually requires a hardened smooth interface and permits only limited pressure drops. Wear life and wear debris for operations with static or dynamic excitation are largely undetermined. A seal system involves control of fluid within specific boundaries. The brush and rub ring (or rub surface) form a seal system. Design similitudes, a bulk flow model, and rub ring (interface) coatings are discussed. The bulk flow model calculations are based on flows in porous media and filters. The coatings work is based on experience and expanded to include current practice.
    Keywords: MECHANICAL ENGINEERING
    Type: ASME PAPER 91-GT-325
    Format: text
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    NASA TECHNICAL REPORTS
  • 14
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    Unknown
    Some preliminary results of brush seal/rotor interference effects on leakage at zero and low RPM using a tapered-plug rotor (1991)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Some preliminary brush seal leakage results for ambient temperature air are presented. Data for four nominal brush rotor radial clearances of -0.09, -0.048, -0.008, and 0.035 mm were taken by using a tapered plug rotor at 0 and 400 rpm with rotor runout of 0.127 mm peak to peak. The brush seal nominal bore diameter was 38 mm with 0.05 mm bristles at 200 bristles/mm of circumference and a 0.61 mm fence height. Leakages were greater than predicted, but agreement was reasonable. Leakage rates were not significantly altered by hysteresis or inlet flow variations. Visualization studies showed that the bristles followed the 400 rpm excitation, and loading studies indicated that bristles slid relative to one another.
    Keywords: MECHANICAL ENGINEERING
    Type: NASA-TM-104396 , E-6212 , NAS 1.15:104396 , AIAA PAPER 91-3390 , Joint Propulsion Conference; Jun 24, 1991 - Jun 27, 1991; Sacramento, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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