File:Airplane Research002.jpg
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Summary edit
| Description |
The performance of aircraft engines under the conditions of low pressure and temperature encountered in flight was determined with this equipment. The chambers were of heavy monolithic concrete construction and were equipped with refrigerating machinery and vacuum pumps or large capacity. The dynamometers for the absorption and measurement of the power developed were mounted outside the chamber, as were all other necessary apparatus and engine controls. One of the new chambers (after this photo was taken) would have a planned dynamic capacity sufficient to test engines up to 1000 horsepower. The exhaust from the engine and the air in the chamber were withdrawn by an electric-driven centrifugal exhauster. The pressure could thus be reduced to one-third of an atmosphere, corresponding to an altitude of approximately 35,000 feet. |
| Date | 4/1/1918 |
| Source | National Institute of Standards and Technology |
| Author | National Institute of Standards and Technology |
| Permission (Reusing this file) |
The images in the Airplane Research WWI Photographic Collection are in the public domain and are not subject to copyright in the United States. However, please pay special attention to the individual works to make sure there are no copyright restrictions indicated. Individual works may require securing other permissions from the original copyright holder. Use of the images from NIST Digital Collections is not restricted, but a statement of attribution is required. Please use the following attribution statement: "National Institute of Standards and Technology Digital Collections, Gaithersburg, MD 20899." |
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
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| current | 14:15, 16 July 2014 | | 5,591 × 4,596 (24.38 MB) | NISTResearchLibrary (talk | contribs) |
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