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  • Inorganic Chemistry  (3,032)
  • Aerodynamics  (5)
  • 1920-1924
Collection
Keywords
Publisher
Years
Year
  • 1
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    The Minimum Induced Drag of Aerofoils (1923)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: This report helps explain the phenomenon of flight. It contains some theorems concerning the arrangement of airplane wings which are of considerable practical interest. In particular, it shows the theoretical reasons for the decrease of drag which accompanies all increase in the aspect ratio or lateral extension of a wing. The efficiency of a given arrangement of wings may be calculated from the formulae derived in this paper.
    Keywords: Aerodynamics
    Type: NACA-TR-121
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    The Inertial Coefficients of an Airship in a Frictionless Fluid (1924)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: This report deals with the investigation of the apparent inertia of an airship hull. The exact solution of the aerodynamical problem has been studied for hulls of various shapes and special attention has been given to the case of an ellipsoidal hull. In order that the results for this last case may be readily adapted to other cases, they are expressed in terms of the area and perimeter of the largest cross section perpendicular to the direction motion by means of a formula involving a coefficient K which varies only slowly when the shape of the hull is changed, being 0.637 for a circular or elliptic disk, 0.5 for a sphere, and about 0.25 for a spheroid of fineness ratio 7. For rough purposes it is sufficient to employ the coefficients, originally found for ellipsoids, for hulls otherwise shaped. When more exact values of the inertia are needed, estimates may be based on a study of the way in which K varies with different characteristics and for such a study the new coefficient possesses some advantage over one which is defined with reference to the volume of fluid displaced. The case of rotation of an airship hull has been investigated also and a coefficient has been defined with the same advantages as the corresponding coefficient for rectilinear motion.
    Keywords: Aerodynamics
    Type: NACA-TR-164
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Remarks on the Pressure Distribution over the Surface of an Ellipsoid, Moving Translationally Through a Perfect Fluid (1924)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: This note, prepared for the National Advisory Committee for Aeronautics, contains a discussion of the pressure distribution over ellipsoids when in translatory motion through a perfect fluid. An easy and convenient way to determine the magnitude of the velocity and of the pressure at each point of the surface of an ellipsoid of rotation is described. The knowledge of such pressure distribution is of great practical value for the airship designer. The pressure distribution over the nose of an airship hull is known to be in such good agreement with the theoretical distribution as to permit basing the computation of the nose stiffening structure on the theoretical distribution of pressure.
    Keywords: Aerodynamics
    Type: NACA-TN-196
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    The Aerodynamic Forces on Airship Hulls (1924)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: This report describes the new method for making computations in connection with the study of rigid airship, which was used in the investigation of the navy's ZR-1 by the special subcommittee of the National Advisory Committee for Aeronautics appointed for this purpose. It presents the general theory of the air forces on airship hulls of the type mentioned, and an attempt has been made to develop the results from the very fundamentals of mechanics without reference to some of the modern highly developed conceptions, which may not yet be thoroughly known to readers uninitiated into modern aerodynamics, and which may, perhaps, for all time remain restricted to a small number of specialists.
    Keywords: Aerodynamics
    Type: NACA-TR-184
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    On the Elementary Relation Between Pitch, Slip, and Propulsive Efficiency (1920)
    In:  CASI
    Details
    Publication Date: 2019-08-13
    Description: No abstract available
    Keywords: Aerodynamics
    Type: NACA-TM-1
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
    Electronic Resource
    Electronic Resource
    Lichtreaktionen mit Cerdioxyd (1920)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 110 (1920), S. 104-106 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19201100106
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Einige Beziehungen kritischer Daten zu anderen Eigenschaften organischer Flüssigkeiten (1920)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 111 (1920), S. 52-54 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19201110104
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Über die Schmelzpunkte der Glieder homologer Reihen (1920)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 109 (1920), S. 221-225 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19201090116
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Über Bleichromat (1920)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 109 (1920), S. 226-234 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19201090117
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  • 10
    Electronic Resource
    Electronic Resource
    Das Uranylradikal als Chromophor (1920)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 109 (1920), S. 235-274 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19201090118
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    Paper (German National Licenses)
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