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Water-pressure distribution on seaplane float

Description: The investigation presented in this report was conducted for the purpose of determining the distribution and magnitude of water pressures likely to be experienced on seaplane hulls in service. It consisted of the development and construction of apparatus for recording water pressures lasting one one-hundredth second or longer and of flight tests to determine the water pressures on a UO-1 seaplane float under various conditions of taxiing, taking off, and landing. The apparatus developed was found to operate with satisfactory accuracy and is suitable for flight tests on other seaplanes. The tests on the UO-1 showed that maximum pressures of about 6.5 pounds per square inch occur at the step for the full width of the float bottom. Proceeding forward from the step the maximum pressures decrease in magnitude uniformly toward the bow, and the region of highest pressures narrows toward the keel. Immediately abaft the step the maximum pressures are very small, but increase in magnitude toward the stern and there once reached a value of about 5 pounds per square inch. (author).
Date: December 22, 1927
Creator: Thompson, F. L.
Partner: UNT Libraries Government Documents Department
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The Geology of Denton County

Description: Book that discusses the geology of Denton County, Texas. Topics include the county's physiographic subdivisions, geologic formations, and economically valuable geological features.
Date: November 22, 1925
Creator: Winton, W. M. (Will McClain), 1885-1960
Partner: UNT Libraries Government Documents Department
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Radio-Frequency Resistance and Inductance of Coils Used in Broadcast Reception

Description: Technical paper issued by the Bureau of Standards over radio-frequency resistance in radio reception. As stated in the introduction, "the purpose of this paper is to present data on the radio-frequency resistance and inductance of coils within the range of frequencies used in radiotelephone broadcasting" (p. 651). This paper includes tables, and illustrations.
Date: October 22, 1925
Creator: Hund, August & De Groot, H. B.
Partner: UNT Libraries Government Documents Department
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[Check for Drinking Fountain, November 22, 1921]

Description: Check from the Forestburg School Board to the Practical Drawing Company for $21.00; the memo line says "Drinking fount." The check is signed "Forestburg School brd., HB. Caddell, Sec." The back of the check has 3 stamps. One of the stamps is from Southwest National Bank in Dallas Texas, another stamp is from the Banking or Trust Company, dated November 28, 1921 also in Dallas. The third stamp is dated November 29.
Date: November 22, 1921
Creator: Forestburg School Board
Partner: UNT Libraries Special Collections
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