Resource Type
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NACA Technical Memorandums
55
NACA Technical Notes
26
NACA Aircraft Circulars
9
NACA Technical Reports
7
Farmers' bulletin (United States. Department of Agriculture)
6
National Bureau of Standards Reports
4
United States Bureau of Mines Reports
4
Annual Report of the Boy Scouts of America
3
Farmers' bulletin (United States. Dept. of Agriculture)
3
House document (United States. Congress. House)
3
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245 Matching Results
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1 - 24 of
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Fattening Steers in the Corn Belt.
Describes feeder cattle and the varieties of feed used to fatten steers in the Corn Belt.
Date:
April 1924
Creator:
Black, W. H. (William Henry), 1888-1949
Object Type:
Book
System:
The UNT Digital Library
Preparation of peaches for market.
Discusses the losses caused by improper packing of peaches for the market. Provides descriptions of how peaches are to be picked, packaged, and made ready to be sold.
Date:
April 1922
Creator:
Samson, H. W. (Harold Willis), 1888-1927
Object Type:
Book
System:
The UNT Digital Library
How to Get Rid of Rats.
Describes methods of eliminating a rat infestation in terms of food sources, poisons, trapping, and rat proofing. Also describes the natural enemies and diseases of rats, and the benefits of community cooperation in their control.
Date:
April 1923
Creator:
Silver, James, b. 1890
Object Type:
Book
System:
The UNT Digital Library
Poisoning the Cotton Boll Weevil.
A guide to selecting the most suitable method for controlling the boll weevil. Describes poisons and equipment used in boll-weevil control.
Date:
April 1929
Creator:
Coad, B. R. & Gaines, R. C. (Robert Callaway), 1898-
Object Type:
Book
System:
The UNT Digital Library
Varieties of winter wheat adapted to the eastern United States.
Describes varieties of winter wheat and where they grow in the eastern United States.
Date:
April 1921
Creator:
Leighty, C. E. (Clyde Evert), b. 1882
Object Type:
Book
System:
The UNT Digital Library
Standard containers for fruits and vegetables.
Discusses the necessity for the standardization and regulation of containers for marketing fruits and vegetables.
Date:
April 1921
Creator:
Downing, F. P. & Samson, H. W. (Harold Willis), 1888-1927
Object Type:
Book
System:
The UNT Digital Library
Rural libraries.
Describes how libraries are created in rural areas; describes the types of services offered by rural libraries.
Date:
April 1928
Creator:
Nason, W. C. (Wayne Crocker), b. 1874
Object Type:
Book
System:
The UNT Digital Library
The Porto Rican mole cricket.
Describes the characteristics of the mole cricket, the damage it causes, and methods of control.
Date:
April 1928
Creator:
Thomas, W. A. (William Andrew), 1883-
Object Type:
Book
System:
The UNT Digital Library
The Striped Cucumber Beetle and How to Control It.
Describes the characteristics of the striped cucumber beetle, the damage it can cause to plants, and methods for controlling it.
Date:
April 1923
Creator:
Chittenden, F. H. (Frank Hurlbut), 1858-1929
Object Type:
Book
System:
The UNT Digital Library
Cranberry harvesting and handling.
Recommends methods of harvesting, handling, storing, and packing cranberries in preparation for market. Discusses the function of cooperative cranberry organizations in relation to sales and prices.
Date:
April 1924
Creator:
Franklin, Henry J. (Henry James), 1883-1958; Darrow, George M. (George McMillan), 1889- & Malde, O. G. (Ole Gustav), 1880-
Object Type:
Book
System:
The UNT Digital Library
The Coupling of Engines
This report examines the idea of coupling numerous engines together to turn a single propeller, which the author feels would free aircraft design from the problems of multi-engine and propeller design.
Date:
April 1921
Creator:
Boccaccio, Paul
Object Type:
Report
System:
The UNT Digital Library
Resume of the Theory of Naval and Aerial Propulsive Propellers and of Airplanes in the Rectilinear Flight
Though dissimilar, these two subjects have been united because they have some points in common. The computation of the movement of an airplane can only be correctly established if we are in a position to know exactly the thrust and resisting torque of the propeller for the various values of slip, which may vary greatly according to circumstance. The first part of the work concerns propellers and introduces as a fundamental variable, the true slip (delta) with respect to the effective pitch, which is the advance per revolution of the propeller corresponding to no thrust. The second part deals with characteristic curves of an airplane.
Date:
April 1921
Creator:
Rateau, A.
Object Type:
Report
System:
The UNT Digital Library
Abstracts from the German Technical Press: Rates for Flights Organized by the State
Report presenting tariffs that are written for all aircraft manufacturing companies to follow regarding aircraft orders.
Date:
April 1921
Creator:
United States. National Advisory Committee for Aeronautics.
Object Type:
Report
System:
The UNT Digital Library
The Technical Development of the Transport airplane: Report of the Aero-Technical Conference of the Scientific Association for Aeronautics, March 5, 1919
The abolition of military qualifications gives free scope to new technical possibilities in the development of transport airplanes. This report notes the various considerations that must be made when designing aircraft to meet the needs of commercial passengers. Comfort and safety must be emphasized.
Date:
April 1921
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Sixth Meeting of the Members of the German Scientific Association for Aeronautics
Report presenting a description of a meeting of the German Scientific Association for Aeronautics. The topics that were discussed are described.
Date:
April 1921
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Study of the Resistance Offered by Propellers Rotating on an Airstream
This report presents a series of tests conducted to verify the formula for thrust P = q(exp 2) D(exp 2) V(exp 2), where P represents thrust, V the velocity of the airstream, D the diameter of the propeller, and q the lifting quality of a comparative propeller which is called the conjugate propeller.
Date:
April 1921
Creator:
Lame, M.
Object Type:
Report
System:
The UNT Digital Library
Extracts from the German Technical Process. Transport Airplanes.
Report presenting a description of the transition stage of airplanes and how it will change with new developments in aircraft design. The details of the debate between centralized or decentralized installation are also provided, including some of the pros and cons of each.
Date:
April 1921
Creator:
Rohrbach, A. K.
Object Type:
Report
System:
The UNT Digital Library
Center of pressure coefficients for airfoils at high speeds
"It has been customary to calculate the strength of the rear wing beam for the 'high speed' condition on the assumption that the center of pressure was at 0.50 of the wing chord. It can be shown that this assumption is not justified, regardless of the utility of a 'high speed' condition in strength calculations" (p. 1).
Date:
April 1922
Creator:
Diehl, W. S.
Object Type:
Report
System:
The UNT Digital Library
On the Resistance of the Air at High Speeds and on the Automatic Rotation of Projectiles
Here, the laws governing the flow of a compressible fluid through an opening in a thin wall are applied to the resistance of the air at high speeds, especially as applied to the automatic rotation of projectiles. The instability which we observe in projectiles shot into the air without being given a moment of rotation about their axis of symmetry, or without stabilizing planes, is a phenomenon of automatic rotation. It is noted that we can prevent this phenomenon of automatic rotation by bringing the center of gravity sufficiently near one end, or by fitting the projectile with stabilizing planes or a tail.
Date:
April 1921
Creator:
Riabouchinski, D.
Object Type:
Report
System:
The UNT Digital Library
Gordon Bennett Airplane Cup 1920
The characteristics of the airplanes built for the Gordon Bennett Airplane Cup race that took place on September 28, 1920 are described. The airplanes are discussed from a aerodynamical point of view, with a number of new details concerning the French machines. Also discussed is the regulation of future races. The author argues that there should be no limitations on the power of the aircraft engines. He reasons that in the present state of things, liberty with regard to engine power does not lead to a search for the most powerful engine, but for one which is reliable and light, thus leading to progress.
Date:
April 1921
Creator:
Margoulis, W.
Object Type:
Report
System:
The UNT Digital Library
Similitude tests on wing sections
Report presenting an exploration of the application of model test results to full size construction, which assumes that either the resistance varies as the square of the speed within, the range of speeds in question or that the mechanical similarity law is fulfilled by the model test. The latter requires that the relation of airflow to the model be exactly like that for the large machine.
Date:
April 1921
Creator:
Kumbruch, H. & Bacon, D. L.
Object Type:
Report
System:
The UNT Digital Library
Notes on Propeller Design 2:The Distribution of Thrust Over a Propeller Blade
The best distribution of the thrust over the length of the propeller blade is investigated, taking into account chiefly the slipstream loss and the friction between the blades and the air.
Date:
April 1922
Creator:
Munk, Max M.
Object Type:
Report
System:
The UNT Digital Library
Notes on Propeller Design 1: The Energy Losses of the Propeller
The different kinds of energy losses of the propeller and the values of the constants determining them are discussed.
Date:
April 1922
Creator:
Munk, Max M.
Object Type:
Report
System:
The UNT Digital Library
Full Scale Determination of the Lift and Drag of a Seaplane
The speed, barometric pressure, and number of revolutions of the engine of a seaplane were measured, including tests with stopped engine. The mean data obtained are given in the following note; the results of the gliding tests are used for the computation of the lift and drag coefficients, and by making use of them the results of the engine flights are used for the computation of the propeller efficiency.
Date:
April 1922
Creator:
Munk, Max M.
Object Type:
Report
System:
The UNT Digital Library