Resource Type
Collection
Serial/Series Title
NACA Technical Memorandums
43
NACA Technical Notes
28
Farmers' bulletin (United States. Department of Agriculture)
12
NACA Aircraft Circulars
11
NACA Technical Reports
11
Farmers' bulletin (United States. Dept. of Agriculture)
5
United States Bureau of Mines Reports
4
National Bureau of Standards Reports
3
Annual Report of the Boy Scouts of America
2
House document (United States. Congress. House)
2
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249 Matching Results
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241 - 249 of
249
Good Naval-Stores Practice.
Describes best practices for tapping trees for naval stores, in order to yield the most gum and prevent damage to trees.
Date:
May 1929
Creator:
Cary, Austin, 1865-1936
Object Type:
Book
System:
The UNT Digital Library
Materials and Methods of Construction in Light Structures
Different methods of constructing light airplanes are presented with a view toward increasing production and efficiency.
Date:
May 1929
Creator:
Rohrbach, Adolf
Object Type:
Report
System:
The UNT Digital Library
Ocher and Ochery Earths
Report about ocher or ochery earth, "a natural mineral pigment composed largely of clay permeated with hydrated iron (ferric oxide)" (p. 2). It includes information about the uses of choer, substitutes, artificial ocher, mining and local deposits, import and export of ocher, and related information.
Date:
May 1929
Creator:
Santmyers, R. M.
Object Type:
Report
System:
The UNT Digital Library
On the Strength of Box Type Fuselages
The present investigation relates to a box-type fuselage with sides consisting of thin smooth sheet metal, stiffened by longitudinal members riveted to the flanged channel-section bulkheads or transverse frames and to the semicircular corrugated corner stiffenings. The results obtained in this particular case can be applied to a great number of similar structures.
Date:
May 1929
Creator:
Mathar, J.
Object Type:
Report
System:
The UNT Digital Library
The Southern Pine Beetle: A Serious Enemy of Pines in the South.
Describes the characteristics of the southern pine beetle, the damage it causes to pine trees in the southern United States, and methods of control.
Date:
May 1929
Creator:
St. George, R. A. (Raymond Alexander), b. 1894 & Beal, J. A. (James Allen), 1898-
Object Type:
Book
System:
The UNT Digital Library
Technical report of the 1928 Rhon soaring-flight contest
Report presenting some information on the gliders that participated in the 1928 Rhön soaring flight contest. Almost all of the gliders represented an improvement over gliders used in the previous years. A great increase in the skill of the glider pilots is also noted.
Date:
May 1929
Creator:
Lippisch, A.
Object Type:
Report
System:
The UNT Digital Library
The effect of cowling on cylinder temperatures and performance of a Wright J-5 engine
This report presents the results of tests conducted to determine the effect of different amounts and kinds of cowling on the performance and cylinder temperatures of a standard Wright J-5 engine. These tests were conducted in conjunction with drag and propeller tests in which the same cowlings were used. Four different cowlings were investigated varying from the one extreme of no cowling on the engine to the other extreme of the engine completely cowled and the cooling air flowing inside the cowling through an opening in the nose and out through an annular opening at the rear of the engine. Each cowling was tested at air speeds of approximately 60, 80, and 100 miles per hour.
Date:
May 2, 1929
Creator:
Schey, Oscar W. & Biermann, Arnold E.
Object Type:
Report
System:
The UNT Digital Library
The Gaseous Explosive Reaction at Constant Pressure: The Reaction Order and Reaction Rate
The data given in this report covers the explosive limits of hydrocarbon fuels. Incidental to the purpose of the investigation here reported, the explosive limits will be found to be expressed for the condition of constant pressure, in the fundamental terms of concentrations (partial pressures) of fuel and oxygen.
Date:
May 9, 1929
Creator:
Stevens, F. W.
Object Type:
Report
System:
The UNT Digital Library
Tests of large airfoils in the propeller research tunnel, including two with corrugated surfaces
This report gives the results of the tests of seven 2 by 12 foot airfoils (Clark Y, smooth and corrugated, Gottingen 398, N.A.C.A. M-6, and N.A.C.A. 84). The tests were made in the propeller research tunnel of the National Advisory Committee for Aeronautics at Reynolds numbers up to 2,000,000. The Clark Y airfoil was tested with three degrees of surface smoothness. Corrugating the surface causes a flattening of the lift curve at the burble point and an increase in drag at small flying angles.
Date:
May 24, 1929
Creator:
Wood, Donald H.
Object Type:
Report
System:
The UNT Digital Library