File:B6N2 mec turning prop.jpg

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B6N2_mec_turning_prop.jpg ‎(507 × 281 pikseli, rozmiar pliku: 13 KB, typ MIME: image/jpeg)

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Nakajima B6N2

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Nakajima B6N2 before starting the engine. The mechanic is manually turning the prop, to prevent hydraulic lock. A hydraulic lock occurs in a cylinder when it gets full of oil and the connecting rod attempts to displace it. Liquids are not compressible, so it will bend, or possibly break the connecting rod. This used to be a real problem in radial engines with a bottom cylinder, the oil would run down into the lower cylinder. This is why you see radials being "pulled through" by hand before starting the engine.

www.ijnafpics.com archive copy at the Wayback Machine

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Public domain
This photograph is in the public domain in Japan because its copyright has expired according to Article 23 of the 1899 Copyright Act of Japan (English translation) and Article 2 of Supplemental Provisions of Copyright Act of 1970. This is when the photograph meets one of the following conditions:
  1. It was published before 1 January 1957.
  2. It was photographed before 1 January 1947.
It is also in the public domain in the United States because its copyright in Japan expired by 1970 and was not restored by the Uruguay Round Agreements Act.
Notes
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To uploader: Please provide the source and publication date.
  • If the photograph was also published in the United States within 30 days after publication in Japan, it might be copyrighted. If the copyright has not expired in the U.S, this file will be deleted. See Commons:Hirtle chart.
  • This template should not be used for a faithful photographic reproduction of an artwork. Under Article 23 of the former Copyright Act, its protection will be consistent with the artwork. See also Commons:When to use the PD-Art tag.

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Data/czasMiniaturaWymiaryUżytkownikOpis
aktualny21:09, 2 wrz 2006Miniatura wersji z 21:09, 2 wrz 2006507 × 281 (13 KB)Sylvain Mielot~commonswiki (dyskusja | edycje)Nakajima B6N2 before starting the engine. The mechanic is manually turning the prop, to prevent hydraulic lock. A hydraulic lock occurs in a cylinder when it gets full of oil and the connecting rod attempts to displace it. Liquids are not compressible, so

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Źródło: „https://commons.wikimedia.org/w/index.php?title=File:B6N2_mec_turning_prop.jpg&oldid=809999402”