NASA Scientific and Technical Publications PDF Download
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Category : Aeronautics
Languages : en
Pages : 188
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 188
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Author: United States. National Aeronautics and Space Administration
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ISBN:
Category :
Languages : en
Pages : 752
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Category : Industrial engineering
Languages : en
Pages : 736
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Author:
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ISBN:
Category : Industrial engineering
Languages : en
Pages : 204
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 268
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 180
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ISBN:
Category :
Languages : en
Pages : 596
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Author: John J. Coy
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Category :
Languages : en
Pages : 18
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The NASA Lewis Research Center and the U.S. Army Aviation Systems Command share an interest in advancing the technology for helicopter propulsion systems. In particular, this paper presents highlights from that portion of the program in drive train technology and the related mechanical components. The major goals of the program are to increase life, reliability, and maintainability; reduce the weight, noise, and vibration; and maintain the relatively high mechanical efficiency of the gear train. The current activity emphasizes noise reduction technology and analytical code development followed by experimental verification. Selected significant advances in technology for transmissions are reviewed, including advanced configurations and new analytical tools. Finally, the plan for transmission research in the future is presented.
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Category :
Languages : en
Pages : 554
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Author:
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ISBN:
Category : Science
Languages : en
Pages : 1226
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