Výsledky vyhledávání - "Imao NAGASAKA"

Vibration Suppression of a Helicopter Using Pendulum Absorbers : First Elastic Mode of a Blade

Autor: Naoki Fujimatsu, Yukio Ishida, Imao Nagasaka, Takayuki Koyama

Publikováno v: Journal of System Design and Dynamics. 4:837-847

Centrifugal pendulum vibration absorbers are widely used as a vibration suppression device for helicopters. The vibration characteristics of this absorber have been investigated by utilizing linear anti-resonance theory. However, it has been noted th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bd6587eb61893746e9d32ab176e0e24e
https://doi.org/10.1299/jsdd.4.837

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Vibration Suppression of a Helicopter by Pendulum Absorbers : First Elastic Mode of Blades(Dynamics & Design Conference 2009)

Autor: Naoki Fujimatsu, Yukio Ishida, Imao Nagasaka, Takayuki Koyama

Publikováno v: Transactions of the Japan Society of Mechanical Engineers Series C. 76:1148-1154

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b7c3feaf95d6691067476345d9fb13cd
https://doi.org/10.1299/kikaic.76.1148

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Vibration Suppression of a Helicopter Fuselage by Pendulum Absorbers : Rigid-Body Blades with Aerodynamic Excitation Force

Autor: Yukio Ishida, Takayuki Koyama, Naoki Fujimatsu, Imao Nagasaka

Publikováno v: Journal of System Design and Dynamics. 2:1230-1238

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::65db21b184682009e6873bdf51e2f210
https://doi.org/10.1299/jsdd.2.1230

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Vibration Suppression of Helicopter Fuselage by Pendulum Absorbers (Excitation Forces Acting on Rigid-Body Blades)

Autor: Yukio Ishida, Imao Nagasaka, Takayuki Koyama, Naoki Fujimatsu

Publikováno v: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C. 74:1231-1237

The vibration suppression of a helicopter is very important to ensure the comfort and the safety. In some kind of helicopters, the pendulum absorbers are adopted for the purposes to reduce vibrations. Present pendulum absorbers are designed based on

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2d975f405a72a6dccf781a1c43fd4d78
https://doi.org/10.1299/kikaic.74.1231

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Vibration Suppression of Helicopter Blades by Pendulum Absorbers (Analytical and Experimental Investigation in Case of Rigid-Body Mode)

Autor: Tomoya Ishii, Yukio Ishida, Takayuki Koyama, Imao Nagasaka, Taira Okada

Publikováno v: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C. 73:129-137

The vibration suppression becomes very important for designing the helicopter blades to ensure the comfortability and safety. Now-a-day, the pendulum absorbers and others are adopted for the purposes to reduce the vibration of the rotor blades. But,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::19c07eed92ea77aadc0ae5c2b755c92f
https://doi.org/10.1299/kikaic.73.129

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Estimation of Tangential Velocity near Side Wall of Fully Turbulent Agitated Vessel without Baffles

Autor: Takao Yamaguchi, Masaaki Yamamura, Yoshihito Kato, Yutaka Tada, Hiroyuki Sakai, Imao Nagasaka, Setsuro Hiraoka, Shuichi Iwata, Katumi Shiobara

Publikováno v: JOURNAL OF CHEMICAL ENGINEERING OF JAPAN. 39:583-586

The tangential velocity near the side wall of a fully turbulent agitated vessel without baffles uD was estimated based on the tangential velocity at the radial distance of the impeller tip far above and below the impeller. Comparison of the estimated

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5263b428f35ca31cfcad6b0eefa536bf
https://doi.org/10.1252/jcej.39.583

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Nonlinear Analysis of Spectral Emissivity on Evaporated Gold Layer

Autor: Takao Yamaguchi, Imao Nagasaka, Setsuro Hiraoka, Masaaki Yamamura

Publikováno v: Journal of the Japan Institute of Metals. 68:1053-1059

The relation between the thickness of the other material on the base metal surface and the spectral emissivity hasn't yet been clarified.The authors choose SUS304 as the base metal and examined as follows. Gold is evaporated on the SUS304, whose wave

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::183db28b7dce0bc906d0d8aea9936547
https://doi.org/10.2320/jinstmet.68.1053

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The Estimation Formula on the Spectral Emissivity of Color Metals Based on Nonlinear Free Electron Model

Autor: Takao Yamaguchi, Hisasi Mizui, Masaaki Yamamura, Setsuro Hiraoka, Imao Nagasaka

Publikováno v: Journal of the Japan Institute of Metals. 67:668-674

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a3a058b228647d20e0c1b469aa297b9
https://doi.org/10.2320/jinstmet1952.67.11_668

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Forced Oscillations of a Continuous Rotor with Strong Geometric Nonlinearity. Separation of Resonance Point by Effect of Gravity and Axial Force

Autor: Imao NAGASAKA, Jun LIU, Yukio ISHJDA, Kouta KATOU

Publikováno v: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C. 68:3268-3275

When both ends of the rotor are supported by self-aligning double-row ball bearings, the geometric nonlinearity appears due to the stiffening effect in elongation of the shaft if the movements of the bearings in the longitudinal direction are restric

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bdf74c82ca3576bc4dcef2cfe1af479c
https://doi.org/10.1299/kikaic.68.3268

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