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19,650 Matching Results
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An approximate spin design criterion for monoplanes
"A quantitative criterion of merit has been needed to assist airplane designers to incorporate satisfactory spinning characteristics into new designs. An approximate empirical criterion, based on the projected side area and the mass distribution of the airplane, has been formulated in a recent British report. In the present paper, the British results have been analyzed and applied to American designs. A simpler design criterion based solely on the type and the dimensions of the tail, has been developed: it is useful in a rapid estimation of whether a new design is likely to comply with the minimum requirements for safety in spinning" (p. 1).
Date:
June 1939
Creator:
Seidman, Oscar & Donlan, Charles J.
Object Type:
Report
System:
The UNT Digital Library
The Unsteady Lift of a Finite Wing
Note discussing the lift of a finite wing including the calculations and constants for each step of the lift. This information is compared against the lift of an infinite wing. From Summary: "Unsteady lift function for wings of finite aspect ratio have been calculated by approximate methods involving corrections of the aerodynamic inertia and of the angle of the infinite wing. The starting lift of the finite wing is found to be only slightly less than that of the infinite wing; whereas the final lift may be considerably less. The calculations indicate that the distribution of lift near the start is similar to the final distribution."
Date:
January 1939
Creator:
Jones, Robert T.
Object Type:
Report
System:
The UNT Digital Library
Pressure drop in tank and float vent tubes on diving airplanes
Report presenting an experiment regarding tank and float venting conditions that exist on diving airplanes undergoing rapid changes in altitude. The results indicated that large pressure differences build up between the outside and inside of tanks and floats on diving airplanes unless the correct size of venting tube is used.
Date:
January 1939
Creator:
Waldron, C. D.
Object Type:
Report
System:
The UNT Digital Library
[University Post Office]
Photograph of the exterior of the University Post Office.
Date:
1939
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
The Crescent Times (Crescent, Okla.), Vol. 33, No. 8, Ed. 1 Thursday, November 30, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 30, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 22, Ed. 1 Thursday, March 16, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 16, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 43, Ed. 1 Thursday, August 3, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 3, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 24, Ed. 1 Thursday, March 30, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 30, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 13, Ed. 1 Thursday, January 12, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 12, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 33, No. 7, Ed. 1 Thursday, November 23, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 23, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 21, Ed. 1 Thursday, March 9, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 9, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 25, Ed. 1 Thursday, April 6, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 6, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 37, Ed. 1 Thursday, June 29, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 29, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 33, No. 1, Ed. 1 Thursday, October 12, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 12, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 17, Ed. 1 Thursday, February 9, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 9, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 26, Ed. 1 Thursday, April 13, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 13, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 48, Ed. 1 Thursday, September 7, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 7, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 41, Ed. 1 Thursday, July 20, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 20, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 36, Ed. 1 Thursday, June 22, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 22, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 52, Ed. 1 Thursday, October 5, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 5, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 51, Ed. 1 Thursday, September 28, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 28, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 49, Ed. 1 Thursday, September 14, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 14, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 32, No. 19, Ed. 1 Thursday, February 23, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 23, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crescent Times (Crescent, Okla.), Vol. 33, No. 4, Ed. 1 Thursday, November 2, 1939
Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 2, 1939
Creator:
Wilson, Herman O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History