UNT Libraries Government Documents Department - 298 Matching Results

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Railway shop battalion.

Description: "This manual explains the organization and operation of railway shop battalion for employment on a standard military railway. Its purpose is to assist railway shop battalion officers in the training and operation of their units, and to guide command and staff officers charged with the employment of railway shop battalions."
Date: November 29, 1940
Creator: United States. War Department. Office of the Chief of Engineers.
Item Type: Refine your search to only Book
open access

Range sheep production.

Description: A guide to raising sheep for wool or meat. Describes various sheep breeds and the types of wool produced. Describes how to select, manage, and sell sheep or lambs, and how to prevent loss from diseases or other hazards.
Date: 1940
Creator: Cooper, J. M. (John Morrison), 1899-
Item Type: Refine your search to only Book
open access

Recent Work on Airfoil Theory

Description: The basic ideas of a new method for treating the problem of the airfoil are presented, and a review is given of the problems thus far computed for incompressible and supersonic flows. Test results are reported for the airfoil of circular plan form and the results are shown to agree well with the theory. As a supplement, a theory based on the older methods is presented for the rectangular of small aspect ratio.
Date: December 1940
Creator: Prandtl, L.
Item Type: Refine your search to only Report
open access

Rectangular Shell Plating Under Uniformly Distributed Hydrostatic Pressure

Description: "A check of the calculation methods used by Foppl and Henky for investigating the reliability of shell plating under hydrostatic pressure has proved that the formulas yield practical results within the elastic range of the material. Foppl's approximate calculation leaves one on the safe side. It further was found on the basis of the marked ductility of the shell plating under tensile stress that the strength is from 50 to 100 percent higher in the elastic range than expected by either method" (… more
Date: December 1940
Creator: Neubert, M. & Sommer, A.
Item Type: Refine your search to only Report
open access

Requirements for Unit Fuel-Injection Systems

Description: "A unit injector was operated under various test conditions with a cam outline giving a high rate of plunger displacement. The rate of discharge of the unit injector followed the plunger displacement for the outwardly opening injection valve (open nozzle) except under conditions of high fuel pressures when the effect of fuel compressibility decreased the rate of discharge as the pressure increased. The rate of discharge for the inwardly opening injection valve (closed nozzle) did not directly f… more
Date: July 1940
Creator: Marsh, Edred T.
Item Type: Refine your search to only Report
open access

Resonance Vibrations in Intake and Exhaust Pipes of in-Line Engines 3: The Inlet Process of a Four-Stroke-Cycle Engine

Description: Using a previously developed method, the boundary process of four-stroke-cycle engines are set up. The results deviate considerably from those obtained under the assumption that the velocity fluctuation is proportional to the cylinder piston motion. The deviation is less at the position of resonance frequencies. By the method developed, the effect of the resonance vibrations on the volumetric efficiency can be demonstrated.
Date: October 1940
Creator: Lutz, O.
Item Type: Refine your search to only Report
open access

Rhubarb Forcing.

Description: Describes methods of forcing rhubarb, using methods developed in Massachusetts and Michigan.
Date: June 1940
Creator: Beattie, James H. (James Herbert), b. 1882 & Beattie, W. R. (William Renwick), b. 1870
Item Type: Refine your search to only Book
open access

The Ryegrasses.

Description: Describes different kinds of ryegrass, the best climate and soil for its growth, and the steps a farmer should take for successful hay and pasture growth.
Date: May 1940
Creator: Schoth, H. A. (Harry August), b. 1891 & Hein, M. A. (Mason August), b. 1894
Item Type: Refine your search to only Book
open access

Safety Factors in Construction and Ventilation, Wawona Vehicular Tunnel, Yosemite National Park, California

Description: Report issued by the Bureau of Mines discussing the safety and ventilation hazards presented during the construction of the Wawona tunnel in Yosemite National Park. Safety precautions and procedures used during the construction are presented. This report includes tables, illustrations, and photographs.
Date: 1940
Creator: Ash, S. H.
Item Type: Refine your search to only Report
open access

The Shock-Absorbed System of the Airplane Landing Gear

Description: "A discussion is given of the behavior of the shock-absorbing system, consisting of elastic struts and tires, under landing, take-off, and taxying conditions, and a general formula derived for obtaining the minimum stroke required to satisfy the conditions imposed on the landing gear. Finally, the operation of some typical shock-absorbing systems are examined and the necessity brought out for taking into account, in dynamic landing-gear tests, the effect of the wing lift at the instant of conta… more
Date: March 1940
Creator: Callerio, Pietro
Item Type: Refine your search to only Report
open access

Small Irrigation Pumping Plants

Description: "Throughout the United States are many farms, parts or all of which could be irrigated by pumping from either ponds or streams or farm wells. This bulletin is intended to furnish owners or operators of such farms with information that will give them some indication of initial and operating costs and enable them to determine whether soil and water suitable for irrigation are available and what kind of irrigation plant and equipment will be most satisfactory for their purpose. Having examined the… more
Date: 1940
Creator: Rohwer, Carl & Lewis, M. R. (Mortimer Reed), 1886-
Item Type: Refine your search to only Pamphlet
open access

Soil Defense in the Pacific Southwest

Description: "The Pacific Southwest, as considered in this bulletin, embraces the two States -- California and Nevada. Evidences of soil and water losses are briefly touched upon, as are the factors contributing to these losses. The bulk of the bulletin deals with measures of defense that are now being employed on farms and range land within project areas of the Soil Conservation Service and in areas where members of Civilian Conservation Corps camps have been assigned to erosion-control activities." -- p. … more
Date: 1940
Creator: Rule, Glenn K. (Glenn Kenton), 1893- & Netterstrom, Ralph W.
Item Type: Refine your search to only Pamphlet
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