File:Full Scale Tunnel (FST) and Seaplane Tow Channel (7598844348).jpg
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DescriptionFull Scale Tunnel (FST) and Seaplane Tow Channel (7598844348).jpg |
Description In the late 1920's, the NACA decided to investigate the aero/hydro dynamics of floats for seaplanes. A Hydrodynamics Branch was established in 1929 and special towing basin was authorized in March of that same year. Starr Truscott (the first head of the new division) described the tank in NACA TR 470: "The NACA tank is of the Froude type; that is, the model which is being tested is towed through still water at successive constant speeds from a carriage spanning the tank. At each constant speed the towing pull is measured, the trim and the rise, or change of draft, are recorded and, if the model is being towed at a fixed trim, the moment required to hold it there is measured and recorded." "The reinforced concrete basin containing the water has the following dimensions: (1) Length on water, extreme, 2,020 feet; (2) Normal width of water surface, 24 feet; (3) Normal depth of water, 12 feet; (4) Length of 12 foot depth, 1,980 feet." This picture shows the tank before the coving was added. This brought the rails for the carriage closer together and helped suppress waves produced by the models. The finished tank would be filled with approximately 4 million gallons of salt water pumped in from the Back River. The tank was covered by a shelter which protected the water surface. The tank was dedicated on May 27, 1931. In 1936 the tank was extended to a total length of 2,960 feet. In 1959 the facility was turned over to the U.S. Navy. Image # : EL-1999-00356 Date: August 15, 1930 |
Source | Full Scale Tunnel (FST) and Seaplane Tow Channel |
Author | NASA on The Commons |
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NASA on The Commons @ Flickr Commons |
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This image was taken from Flickr's The Commons. The uploading organization may have various reasons for determining that no known copyright restrictions exist, such as: No known copyright restrictionsNo restrictionshttps://www.flickr.com/commons/usage/false
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This image was originally posted to Flickr by NASA on The Commons at https://flickr.com/photos/44494372@N05/7598844348. It was reviewed on 15 September 2016 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions. |
15 September 2016
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current | 19:43, 15 September 2016 | 1,536 × 1,137 (274 KB) | Vanished Account Byeznhpyxeuztibuo (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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