Aeronautical and Space Sciences Japan
Online ISSN : 2424-1369
Print ISSN : 0021-4663
ISSN-L : 0021-4663
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Volume 20, Issue 220
Displaying 1-6 of 6 articles from this issue
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  • Studies on the Gust Response of a Wing
    Part IV Response of Three-dimensional Rigid Wing
    Hiroshi MAEDA, Makoto KOBAYAKAWA
    1972 Volume 20 Issue 220 Pages 229-242
    Published: 1972
    Released on J-STAGE: May 25, 2009
    DOIhttps://doi.org/10.2322/jjsass1969.20.229
    JOURNAL FREE ACCESS
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    In this report, the gust responses of a three dimensional wing are investigated theoretically and experimentally i.e. the responses to the sinusoidal gust and the random gust are obtained theoretically and the both are compared with the experimental results respectively.
    The responses to the sinusoidal gust are calculated by the method of lifting-line theory and the response functions are obtained for the wing of various aspect ratio. These results are compared to the experimental values which were obtained by the wind tunnel experiments for the wing of aspect ratio of 3.16. As the results, it is found that the both agree well with each other.
    For the responses to the random gust, the power spectral density functions and the frequency transfer functions of the lift force of a wing are calculated with the method of lifting-line theory. In this case, it is considered that the gust varies along the wing span i.e. the reduced frequency along the wing span, k2, is introduced. Therefore, the frequency transfer functions have two variables and these results are compared with the experimental values and the both agree well with each other.
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  • Real Gas Flow Near the Stagnation Point of Blunt Nosed Bodies
    Part 2 Vibrational Nonequilibrium Flow
    Nobumi SAIDA
    1972 Volume 20 Issue 220 Pages 243-250
    Published: 1972
    Released on J-STAGE: May 25, 2009
    DOIhttps://doi.org/10.2322/jjsass1969.20.243
    JOURNAL FREE ACCESS
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    This paper is an extension of the previous paper5), and analyzes the inviscid hypersonic vibrational nonequilibrium flow in the shock layer about the stagnation region of a blunt body generating a spherical shock wave. With the assumptions of thin shock layer, strong shock and constant relaxation time, expressions for the temperature, internal energy and density are derived. These expressions have been evaluated for a sphere for various shock radius, ranging from near equilibrium to near frozen flow. Comparison of the calculated temperature distribution with those based upon a numerical solution shows reasonable agreement in near equilibrium flow.
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  • On the Ludwieg Tube
    For the High Reynolds Number Experiments
    Kazuaki TAKASHIMA
    1972 Volume 20 Issue 220 Pages 251-263
    Published: 1972
    Released on J-STAGE: May 25, 2009
    DOIhttps://doi.org/10.2322/jjsass1969.20.251
    JOURNAL FREE ACCESS
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  • Structures and Materials for Lambda and Mu Rocket Motor Cases
    Daikichiro MORI, Akira NAKANO
    1972 Volume 20 Issue 220 Pages 263-273
    Published: 1972
    Released on J-STAGE: May 25, 2009
    DOIhttps://doi.org/10.2322/jjsass1969.20.263
    JOURNAL FREE ACCESS
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  • Combustion in Gas Turbine Combustor
    Morio HORI
    1972 Volume 20 Issue 220 Pages 273-284
    Published: 1972
    Released on J-STAGE: May 25, 2009
    DOIhttps://doi.org/10.2322/jjsass1969.20.273
    JOURNAL FREE ACCESS
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  • Propulsion System of Helicopter
    Yasuyuki KOGURE
    1972 Volume 20 Issue 220 Pages 284-297
    Published: 1972
    Released on J-STAGE: May 25, 2009
    DOIhttps://doi.org/10.2322/jjsass1969.20.284
    JOURNAL FREE ACCESS
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