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Effect of the reversal of air flow upon the discharge coefficient of Durley orifices

Author: Marsden Ware; United States. National Advisory Committee for Aeronautics,
Publisher: [Washington, D.C.] : National Advisory Committee for Aeronautics, 1921.
Series: Technical note (United States. National Advisory Committee for Aeronautics), 40.
Edition/Format:   eBook : Document : National government publication : EnglishView all editions and formats
Summary:
In laying out apparatus for the laboratory testing of superchargers for aircraft engines at the Langley Memorial Aeronautical Laboratory, it was found most convenient to measure the air on the inlet side by drawing the air from the atmosphere through thin plate orifices at low velocities into a box and thence through a throttle into a large reservoir which in turn was in free communication with the supercharger. The  Read more...
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Additional Physical Format: Print version:
Ware, Marsden
Effect of the reversal of air flow upon the discharge coefficient of Durley orifices
(OCoLC)638954981
Material Type: Document, Government publication, National government publication, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Marsden Ware; United States. National Advisory Committee for Aeronautics,
OCLC Number: 1107323709
Notes: Title from title screen (viewed July 1, 2019).
"February, 1921."
No Federal Depository Library Program (FDLP) item number.
Reproduction Notes: Electronic reproduction. Denton, Texas : University of North Texas, 2011. Electronic reproduction from print master produced by University of North Texas.
Description: 1 online resource (12 pages, 2 unnumbered pages) : illustrations.
Details: Master and use copy. Digital master created according to Technical Guidelines for Digitizing Archival Materials for Electronic Access. U.S. National Archives and Records Administration, 2004.
Series Title: Technical note (United States. National Advisory Committee for Aeronautics), 40.
Responsibility: by Marsden Ware.

Abstract:

In laying out apparatus for the laboratory testing of superchargers for aircraft engines at the Langley Memorial Aeronautical Laboratory, it was found most convenient to measure the air on the inlet side by drawing the air from the atmosphere through thin plate orifices at low velocities into a box and thence through a throttle into a large reservoir which in turn was in free communication with the supercharger. The orifice coefficients for this condition were unknown, as the desired type of orifice had been calibrated with the flow from the box into the atmosphere, instead of the reverse direction which would obtain with this apparatus. The present experiments were therefore undertaken in order to obtain information regarding the relationship between the coefficients for flow in the two directions.

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