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Caption | Workers checking a newly completed PV-1 aircraft, Lockheed factory, Burbank, California, United States, Aug 1943 [Colorized by WW2DB] ww2dbase | |||||||
Colorization Note | This photograph was originally a black and white photograph; the colorized version presented here was a derivative work by WW2DB. The colors used in this version were speculative, and could be significantly different from the real colors. Processed using Adobe Photoshop Image Processor, with default neural filter, selecting "None" as the profile. View the original black and white photograph at its own permanent page. | |||||||
Photographer | Charles Jacobs | |||||||
Source | ww2dbaseUnited States National Archives | |||||||
Identification Code | ARC 520736 | |||||||
More on... |
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Photo Size | 2,167 x 2,860 pixels | |||||||
Photos at Same Place | Burbank, California, United States | |||||||
Added By | C. Peter Chen | |||||||
Colorized Date | 24 Feb 2023 | |||||||
Licensing | Public Domain. According to the US National Archives, as of 21 Jul 2010: Please contact us regarding any inaccuracies with the above information. Thank you. |
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Visitor Submitted Comments
2. AnonymRich Millerous says:
10 May 2024 06:53:35 AM
Pulling the prop through to assure oil is spread to the top of the engine. The upper cylinders of a radial engine would drain when shutdown, so a crew would rotate the prop several revolutions to get some oil back up. Magnetos off so it would not start, and care to assure that cylinder compression did not cause the prop to "kick" while anything was in the way.
10 May 2024 06:53:35 AM
Pulling the prop through to assure oil is spread to the top of the engine. The upper cylinders of a radial engine would drain when shutdown, so a crew would rotate the prop several revolutions to get some oil back up. Magnetos off so it would not start, and care to assure that cylinder compression did not cause the prop to "kick" while anything was in the way.
All visitor submitted comments are opinions of those making the submissions and do not reflect views of WW2DB.
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13 Jan 2016 04:56:46 AM
Very likely they're turning the prop to pull oil from the bottom cylinders, before starting the engine.