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Lioré-Olivier Airplane: Type 12 Night-Bomber or Type 20 Commercial
Report presenting a description of the Lioré-Olivier Type 12 night bomber, which can also be converted into the Type 20 commercial. A description of the cell of the wings, fuselage, power plant, landing gear, and flight characteristics is provided.
Date:
March 1926
Creator:
Serryer, J.
System:
The UNT Digital Library
Functioning of Reduction Gears on Airplane Engines
"In undertaking to analyze the functioning conditions of a reduction gear on an aviation engine, we will consider an ordinary twelve-cylinder V-engine. The reduction gear employed consists either of a pair of spur gears, one of which is integral with the engine shaft and the other with the propeller shaft, or of a planetary system of gears" (p. 1).
Date:
March 1926
Creator:
Matteucci, Raffaelli
System:
The UNT Digital Library
The Lateral Failure of Spars
It was concluded that after the critical span or depth-breadth ratio has been reached, the modulus of rupture varies approximately inversely as the first power of the span and of the depth-breadth ratio. The direction of the lateral deflection is alternate between successive supports. For this reason, we believe that rib spacing along the spar is more important in reducing lateral deflection than the distance between supports at the strut points.
Date:
March 1926
Creator:
Bromley, Stevens & Robinson, William H., Jr.
System:
The UNT Digital Library
Strain Lines Developed by Compressive Tests on Structural Members of the Delaware River Bridge at the United States Bureau of Standards for the Delaware River Bridge Joint Commission
Strain lines illustrations from Delaware River Bridge.
Date:
March 10, 1926
Creator:
United States. Bureau of Standards.
System:
The UNT Digital Library
The Gasoline Situation
Report issued by the Bureau of Mines discussing the demands on the oil industry due to an increase in automobiles in the United States. Improvements in drilling methods and refinery practices are presented. This report includes a table.
Date:
March 1926
Creator:
Hill, Harry H.
System:
The UNT Digital Library
Recent Experiments With Large Seaplanes
This report covers the following aspects of large seaplane design and construction: heavy wing loading; propeller design; how the motion of the airplane is affected by increasing the dihedral angle; power plants; floats; and the hull.
Date:
March 1926
Creator:
Rohrbach, Adolf
System:
The UNT Digital Library
Tests for determining the effect of a rotating cylinder fitted into the leading edge of an airplane wing
Experiments were performed with a wing model, to which a rotary cylinder had been fitted. The rotation of the cylinder had a remarkable effect on the aerodynamic properties of the wing.
Date:
March 1926
Creator:
Wolff, E. B. & Koning, C.
System:
The UNT Digital Library
Slip Stream Effect
"The horizontal tail surfaces of a new airplane usually are proportional so that the curve of moment about the center of gravity, combined with a similar curve for the wings alone, gives a composite curve which provides a certain specified degree of static stability. With the application of power three additional factors must be considered in calculations: the moment of the propeller thrust; the change in the velocity of the air over the tail due to the slipstream; and the change in direction of the air over the tail due to the slipstream. The last two factors are considered in this report" (p. 1).
Date:
March 1926
Creator:
Montieth, Charles N.
System:
The UNT Digital Library