JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES
Online ISSN : 2432-3691
Print ISSN : 1344-6460
ISSN-L : 1344-6460
Search
Advanced search
OR
Browse
Search
Volume 47, Issue 545
Displaying 1-5 of 5 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • Study on the Validity of Field Directed Propulsion
    Noriki IWANAGA
    1999 Volume 47 Issue 545 Pages 231-238
    Published: June 05, 1999
    Released on J-STAGE: July 09, 2009
    DOIhttps://doi.org/10.2322/jjsass.47.231
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Propulsion, Geomagnetic Field, Magnetic Sail, Magnetic Torquer Abstract: The concept of "field directed propulsion, " which was suggested by Spenny et al. and Nagashima in 1994, isbased on the magnetic force induced by "uniform" geomagnetic field. Through an analytical investigation, we present that this concept is principally invalid for their original utility. We show, however, that their idea on magnetic shielding can be applied to the improvements of propulsive performance of "magnetic sail" and/or controlling performance of "magnetic torquer."
    View full abstract
    Download PDF (1484K)
  • A Proposal to Detect Failure Modes for an Aircraft Automatic Flight Control System
    Koki FUJITA, Norihiro GOTO
    1999 Volume 47 Issue 545 Pages 239-244
    Published: June 05, 1999
    Released on J-STAGE: July 09, 2009
    DOIhttps://doi.org/10.2322/jjsass.47.239
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    This paper proposes a systematic method to determine failure modes in an aircraft automatic flight control system. The method is based on an on-line parameter estimation scheme to detect changes in dynamical properties of a system and identify the portion in failure. At the same time, several indices based on the robust control theory are introduced to examine the failures in the system. Taking a flight path control system as an example, computer analyses and simulations of showing the indices on a monitoring display are made to demonstrate the effectiveness of the proposed method.
    View full abstract
    Download PDF (1481K)
  • Prediction of Static Height Stability for Some Types of WIG
    Shigenori ANDO
    1999 Volume 47 Issue 545 Pages 245-252
    Published: June 05, 1999
    Released on J-STAGE: July 09, 2009
    DOIhttps://doi.org/10.2322/jjsass.47.245
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Height stability of WIG is fundamentally important among whole problems of WIG flying quality. Kumar made first contribution for it, But he failed theoretical prediction of height stability of tandem type WIG. This paper presents prediction for some WIG types, tandem as well as ente and conventional airplane having T tail.
    View full abstract
    Download PDF (996K)
  • Characteristics of Two-Dimensional Radiation Behind Strong Shock Waves in Air (2nd Report)
    Some Characteristics of Total Radiation Emission
    Toshihiro MORIOKA, Nariaki SAKURAI, Fumihiko SATO, Kazuo MAENO, Hiroki ...
    1999 Volume 47 Issue 545 Pages 253-260
    Published: June 05, 1999
    Released on J-STAGE: July 09, 2009
    DOIhttps://doi.org/10.2322/jjsass.47.253
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    This paper describes time-frozen measurements using a CCD camera system for total radiation behind strong shock wave in a shock tube. The measurements are carried out for the shock velocity range from 6.8km/s to 12.5km/ s at the initial pressure range from 13.33Pa to 133.3Pa in air. The experimental results are compared with the numerical ones. There is a relatively good agreement between the experimental and numerical results at 10km/s shock velocity at the initial pressure 13.33Pa, although some discrepancies appear at the other velocity range. It is found that the full width at half maximum of profile of the first-peak becomes narrower and the thickness of radiation front becomes broader, as the shock velocity increases at the lower initial pressure. At the higher initial pressure, there is a limitation of spatial resolution in the present experiment.
    View full abstract
    Download PDF (3924K)
  • Design of the Light Weight Honeycomb Sandwitch Panels for Space Structures (Part 2)
    Out-of-Plane Strength of the Honeycomb Sandwitch Panel
    Toshio INOUE, Tsuyoshi OZAKI, Shigenori KABASHIMA
    1999 Volume 47 Issue 545 Pages 261-266
    Published: June 05, 1999
    Released on J-STAGE: July 09, 2009
    DOIhttps://doi.org/10.2322/jjsass.47.261
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The formulation of stresses of the honeycomb sandwitch panel in the vicinity of the enbedded stiffner are performed and the solution of the formula is made. Out-of-plane strength of the honeycomb sandwitch panel is derived using the analytical solution. Tests are performed to confirm it. Finite element analysis are also performed. As the result of these analysis and the tests, the stress distribution in the vicinity of the enbedded stiffner are derived and the effects of the face skin thickness and the honeycomb core thickness on the strength of the honeycomb sandwitch panel are also derived.
    View full abstract
    Download PDF (1843K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top