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Volume 18, Issue 200
Displaying 1-5 of 5 articles from this issue
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Kyuichiro WASHIZU, Teruo ICHIKAWA, Takeshi ADACHI1970 Volume 18 Issue 200 Pages 327-333
Published: 1970
Released on J-STAGE: May 25, 2009
JOURNAL FREE ACCESSThe purpose of the present paper is to show that the dihedral effect of the horizontal tail has significant effect on the T-tail flutter and that the flutter speed is appreciably dependent on the angle of attack of the horizontal tail surface. Flutter characteristics of a simplified T-tail is allalysed. Quasi-steady aerodynamic force is used to represent the dihedral effect of the horizontal tail. Some references are made to experimental data on the T-tail flutter which show a tendency similar to our analytical results.View full abstractDownload PDF (417K) -
Part 2. Longitudinal and Vertical Location SeriesEiichi NAKAI, Toshiyuki MORITA, Toshiro TAKAGI1970 Volume 18 Issue 200 Pages 333-340
Published: 1970
Released on J-STAGE: May 25, 2009
JOURNAL FREE ACCESSAn experimental inveStigation of some effects of longitudinally and vertically varied location of one, engine-pod like shaped, concentrated mass on transonic flutter characteristics of thin cantilever wings having a sweptback angle of quarter chord line of 20° and panel aspect ratio and taper ratio of 4.0 and 0.4, respectively, has been conducted in the N.A.L. 60cm×60cm transonic blowdown wind tunnel for flutter testing at Mach numbers between 0.759 and 0.964.
The experimental results are presented in comparing the boundaries of flutter density and experimental flutter-velocity coefficients of the respective wing-pod configuration experimented, as a function of Mach number, and also are compared with the calcullated results by the matrix iteration method employing two-dimensional incompressible unsteady flow theory as required oscillatory aerodynamic forces.View full abstractDownload PDF (502K) -
Calculation of Radiative Heat Transfer Using Monte Carlo MethodMasahide MURAKAMI, Koichi OSHIMA1970 Volume 18 Issue 200 Pages 340-347
Published: 1970
Released on J-STAGE: May 25, 2009
JOURNAL FREE ACCESSComparing the radiative heat exchange coefficients between two adjoining flat plates calculated by Monte Carlo method with those determined analytically, the usefulness of an assumption of the uniform irradiation on the node surfaces, which is commonly used in the radiative heat transfer analysis, was discussed, resulted in that this assumption fails even for the relatively small receiving surface.
Based on this discussion, the heat transfer characteristics of the thermal louvers was investigated, including the effect of solar irradiation on the louver surface. Several practical advices for the design of them are given.View full abstractDownload PDF (444K) -
Basic Investigation Using Space Simulation ChambersSachiko NAKAI1970 Volume 18 Issue 200 Pages 348-354
Published: 1970
Released on J-STAGE: May 25, 2009
JOURNAL FREE ACCESSThermal vacuum tests of several thermal louver models were carried out using space simulation chambers, and their heat dissipation efficiencies to the outer space were experimentally determined. The effects of the optical characters of the base plate and the louver blades and the geometry of it were extensively and individually examined. It is found that the best efficiency is obtained for the louver with the blackpainted base plate and the polished aluminum blades with the same width as their interval, which has the dynamic range of 0.026 to 0.875 of the effective emissivity. The influence of the solar irradiation on the louver were also discussed.View full abstractDownload PDF (4501K) -
Kazuyuki TAKEUCHI, Kosaburo YAMANE1970 Volume 18 Issue 200 Pages 355-363
Published: 1970
Released on J-STAGE: May 25, 2009
JOURNAL FREE ACCESSDownload PDF (560K)
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