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• - Browse neighboring items by call number.
• Collection: Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey

• Title: NASA Langley Research Center, Two-Dimensional Low Turbulence Pressure Tunnel, 582A Thornell Avenue, Hampton, Hampton (Independent City), VA
• Other Title: Building 582A
• Creator(s): Historic American Engineering Record, creator
• Related Names:
     Jacobs, Eastman N
     Abbott, Ira H
     Von Doenhoff, Edward E
     Pittsburgh-Des Moines Steel Company
     Vellines, C C
     Whaley Engineering Corporation
     Westinghouse Electric and Manufacturing Company
     H.M. Wood Company
     Ward Leonard Electric Company
     General Electric Company
     National Advisory Committee for Aeronautics
     Langley, Samuel P
     Munk, Max
     Langley Memorial Aeronautical Laboratory
     National Aeronautics and Space Administration
     Taylor, Robert J, Jr. , historian
     Cunningham, Chris , photographer
     NASA Langley Research Center , sponsor
• Date Created/Published: Documentation compiled after 1968
• Medium: Photo(s): 19
  Data Page(s): 25
  Photo Caption Page(s): 2
• Reproduction Number: ---
• Rights Advisory: No known restrictions on images made by the U.S. Government; images copied from other sources may be restricted. (http://www.loc.gov/rr/print/res/114_habs.html)
  
• Call Number: HAER VA-118-H
• Repository: Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA http://hdl.loc.gov/loc.pnp/pp.print
• Notes:
  • Significance: The Two-Dimensional Low Turbulence Pressure Tunnel (LTPT) is a significant historic resource at the national level for its association with advances in aerodynamics research and testing conducted by the National Advisory Committee for Aeronautics (NACA) and NASA Langley Research Center (LaRC). The LTPT was developed after researchers recognized the shortcomings of the data obtained in the earlier Variable Density Tunnel (VDT) due to its high stream turbulence level. To resolve this issue, the Two-Dimensional Low-Turbulence Pressure Tunnel, which had the lowest turbulence level of any wind tunnel in the world, was designed. This was an important development, because aircraft operate in an atmosphere with very low turbulence. The initial focus of research in the LTPT was to develop a design approach for airfoils with more laminar flow, and therefore lower drag, than attainable on the conventional turbulent-flow airfoils developed in the VDT. The systematic development of this family of so-called laminar-flow airfoils, along with the earlier contributions of NACA to the development of airfoils in the VDT, was a principal reason for NACA's world-wide reputation in aerodynamics. The associated report on these airfoils is still considered to be the "Bible" of airfoil characteristics.
  • Survey number: HAER VA-118-H
  • Building/structure dates: 1938-1940 Initial Construction
  • Building/structure dates: 1948 Subsequent Work
  • Building/structure dates: 1953 Subsequent Work
  • Building/structure dates: 1979-1982 Subsequent Work
  • Building/structure dates: 2006 Subsequent Work
  • Building/structure dates: 2013 Demolished
• Subjects:
  • wind tunnels
  • laboratories
  • offices
  • brick buildings
  • transoms
  • aeronautics
  • propellers
  • motors
  • centrifugal blowers
  • testing
• Place:
  • Virginia -- Hampton (Independent City) -- Hampton
• Latitude/Longitude: 37.078964, -76.343561
• Collections:
  • Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey
• Part of: Historic American Engineering Record (Library of Congress)
• Bookmark This Record:
     https://www.loc.gov/pictures/item/va2093/

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• Rights Advisory: No known restrictions on images made by the U.S. Government; images copied from other sources may be restricted. http://www.loc.gov/rr/print/res/114_habs.html
• Reproduction Number: ---
• Call Number: HAER VA-118-H
• Medium: Photo(s): 19
  Data Page(s): 25
  Photo Caption Page(s): 2

If Digital Images Are Displaying

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HABS/HAER/HALS materials have generally been scanned at high resolution that is suitable for most publication purposes (see Digitizing the Collection for further details about the digital images).

• Photographs--All photographs are printed from digital files to preserve the fragile originals.
• Make note of the Call Number and Item Number that appear under the photograph in the multiple-image display (e.g., HAER, NY,52-BRIG,4-2).
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• P&P reading room staff can provide up to 15 quick copies of items per calendar year (many original items in the holdings are too old or fragile to make such copies, but generally HABS/HAER/HALS materials are in good enough condition to be placed on photocopy machines). For assistance, see our Ask a Librarian page OR
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• Call Number: HAER VA-118-H
• Medium: Photo(s): 19
  Data Page(s): 25
  Photo Caption Page(s): 2

Please use the following steps to determine whether you need to fill out a call slip in the Prints and Photographs Reading Room to view the original item(s). In some cases, a surrogate (substitute image) is available, often in the form of a digital image, a copy print, or microfilm.

1. Is the item digitized? (A thumbnail (small) image will be visible on the left.)

   • Yes, the item is digitized. Please use the digital image in preference to requesting the original. All images can be viewed at a large size when you are in any reading room at the Library of Congress. In some cases, only thumbnail (small) images are available when you are outside the Library of Congress because the item is rights restricted or has not been evaluated for rights restrictions.

     As a preservation measure, we generally do not serve an original item when a digital image is available. If you have a compelling reason to see the original, consult with a reference librarian. (Sometimes, the original is simply too fragile to serve. For example, glass and film photographic negatives are particularly subject to damage. They are also easier to see online where they are presented as positive images.)

   • No, the item is not digitized. Please go to #2.

2. Do the Access Advisory or Call Number fields above indicate that a non-digital surrogate exists, such as microfilm or copy prints?

   • Yes, another surrogate exists. Reference staff can direct you to this surrogate.

   • No, another surrogate does not exist. Please go to #3.

3. If you do not see a thumbnail image or a reference to another surrogate, please fill out a call slip in the Prints and Photographs Reading Room. In many cases, the originals can be served in a few minutes. Other materials require appointments for later the same day or in the future. Reference staff can advise you in both how to fill out a call slip and when the item can be served.

To contact Reference staff in the Prints and Photographs Reading Room, please use our Ask A Librarian service or call the reading room between 8:30 and 5:00 at 202-707-6394, and Press 3.