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467 Matching Results
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Water heaters : inspection and preventive maintenance service.
"This technical manual is a guide to first and second echelon maintenance of domestic hot-water supply systems." Discusses methods of training maintenance personnel, preventive maintenance for users, and inspections.
Date:
June 1947
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Warm-air furnaces : inspection and preventive maintenance service.
A guide to maintenance of warm-air furnaces. Discusses methods of training, duties of the user, inspection, and maintenance.
Date:
June 1947
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Packing and crating: repairs and utilities.
Instructions for packing military supplies, as well as household goods and personal effects. Topics covered include corrosion prevention and materials used for packaging and shipping.
Date:
August 1947
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Coal handling : repairs and utilities
"This Technical Manual describes uniform methods of coal handling for Army posts, camps, and stations. Methods are presented to insure efficient and economical operation, based on accepted commercial practices adapted to meet requirements of Army installations."
Date:
April 1947
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Steam and Hot-Water Heating Plants: Inspection and Preventive Maintenance Service
"This Technical Manual is a guide to first and second echelon maintenance services of domestic type steam and hot-water boilers and heating systems." Discusses methods of training personnel, operation and preventive maintenance, procedures for placing equipment in service and for taking it temporarily out of service, and inspections.
Date:
June 1947
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Ordnance maintenance : 155-mm gun motor carriage M40 and 8 in. howitzer motor carriage M43 hull and suspension.
Contains a description of procedures for "inspection and repair, and necessary disassembly and assembly of hull and track suspension group." This information pertains only to 155-mm gun motor carriage and the 8-inch howitzer motor carriage.
Date:
October 1947
Creator:
United States. War Office.
Object Type:
Book
System:
The UNT Digital Library
Army ground forces light aviation.
"This manual is a guide for the military personnel of Army Ground Forces units who are concerned with organic light aviation. It describes the training, tactical employment, administration, maintenance, and supply of Army Ground Forces light aviation" (p. 1). The index begins on page 171.
Date:
September 1947
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Service of the piece, twin 40-MM gun motor carriage M19.
Describes platoon organization, duties, drills, and operation of the equipment required to serve the twin 40-mm gun motor carriage M19.
Date:
September 1947
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Strength Analysis of Stiffened Beam Webs
Note presenting a method for strength analysis of stiffened shear webs, which has been revised and extended from a previous report. A set of formulas and graphs which cover all aspects of strength analysis is given, experimental data are presented, and the accuracy of the formulas as judged by comparison with the data is discussed.
Date:
July 1947
Creator:
Kuhn, Paul & Peterson, James P.
Object Type:
Report
System:
The UNT Digital Library
An Improved Continuous-Indicating Dew-Point Meter
Note presenting the development of a continuous-indicating dew-point meter that automatically maintains a mirror surface at the dew point. The instrument was found to have an average accuracy of 1 degrees Fahrenheit over the range of 75 to -45 degrees. The accuracy of the instrument is uncertain at temperatures below 32 degrees Fahrenheit by the difference in vapor-solid and vapor-liquid equilibrium temperatures.
Date:
February 1947
Creator:
Friswold, Frank A.; Lewis, Ralph D. & Wheeler, R. Clyde, Jr.
Object Type:
Report
System:
The UNT Digital Library
Hanford Engineer Works technical progress letter No. 138, February 16--22, [1947]
This technical progress letter contains reports from six Technical Department divisions at the Hanford Engineer Works for February 16 through February 22, 1947. The six reporting divisions are: 100 Areas, 300 Area, 200 Areas, Chemical Development, Laboratories, and Statistical Studies. (JL)
Date:
February 27, 1947
Creator:
Greninger, A. B.
Object Type:
Report
System:
The UNT Digital Library
The Langley Two-Dimensional Low-Turbulence Pressure Tunnel
"A description is presented of the Langley two-dimensional low-turbulence pressure tunnel and a history is given of the work done at the Langley Memorial Aeronautical Laboratory which led to the achievement of a remarkably low level of turbulence in the air stream of this wind tunnel. The types of investigations to which the tunnel is suited and the methods of obtaining and correcting data are also discussed" (p. 1).
Date:
May 1947
Creator:
von Doenhoff, Albert E. & Abbott, Frank T., Jr.
Object Type:
Report
System:
The UNT Digital Library
Wind-Tunnel Investigation of Icing of an Engine Cooling-Fan Installation
Note presenting an investigation of the icing characteristics and means of ice protection of a typical radial-engine cooling-fan installation. The investigation was made at various icing and performance conditions in the icing research tunnel of the NACA Cleveland laboratory. The icing of the unprotected cooling-fan installation was found to present a serious operation problem.
Date:
April 1947
Creator:
Lewis, James P.
Object Type:
Report
System:
The UNT Digital Library
Wind-Tunnel Investigation of Icing of an Engine Cooling-Fan Installation
Note presenting an investigation of the icing characteristics and means of ice protection of a typical radial-engine cooling-fan installation. The icing of the unprotected cooling-fan installation was found to present a serious operational problem. Results regarding icing, steam heat de-icing, alcohol de-icing, and electrical heat de-icing are provided.
Date:
April 1947
Creator:
Lewis, James P.
Object Type:
Report
System:
The UNT Digital Library
Effect of exhaust pressure on the performance of a 12-cylinder liquid-cooled engine
Report presenting a dynamometer-stand investigation to determine the effect of exhaust pressure on the performance of a 12-cylinder liquid-cooled aircraft engine equipped with a conventional exhaust collector. The results are presented in the form of curves that show the effect of exhaust pressure on engine power, charge-air flow, volumetric efficiency, inlet-manifold mixture temperature, exhaust-gas temperature, cylinder-head temperature, and heat rejected to the coolant.
Date:
July 1947
Creator:
Desmon, Leland G. & Doyle, Ronald B.
Object Type:
Report
System:
The UNT Digital Library
A Method for Estimating Heat Requirements for Ice Prevention Gas Heated Hollow Propeller Blades
Report presenting a method for determining the temperature and flow of heated gas necessary for ice prevention of hollow propeller blades in flight and icing conditions. A variety of conditions are taken into consideration and suggested simplifications and short methods are provided in order to not overcomplicate the design modifications.
Date:
December 1947
Creator:
Gray, V. H. & Campbell, R. G.
Object Type:
Report
System:
The UNT Digital Library
A Method for Estimating Heat Requirements for Ice Prevention on Gas-Heated Hollow Propeller Blades
Report presenting a detailed method for determining the temperature and flow of heated gas necessary for ice prevention of hollow propeller blades in flight and icing conditions. Expressions for the total external and internal heat transfer are combined to determine the surface temperatures of each segment.
Date:
December 1947
Creator:
Gray, V. H. & Campbell, R. G.
Object Type:
Report
System:
The UNT Digital Library
LeTourneau Tech's NOW, Volume 1, Number 33, October 1947
Monthly newsletter LeTourneau Technical Institute of Texas containing religious articles, updates about news and events on campus, and other information of interest to students.
Date:
October 1947
Creator:
LeTourneau Technical Institute
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Further Investigation of Preheating and Postheating in Spot-Welding 0.040-Inch Alclad 24S-T
Report presenting additional work in an investigation to determine the effects of preheating and postheating on the quality and strength of spot welds in aluminum alloys. The results showed that in alternating-current spot welding of aluminum alloys, the weld time is very important with regard to the quality of welds produced.
Date:
December 1947
Creator:
Hess, W. F. & Winsor, F. J.
Object Type:
Report
System:
The UNT Digital Library
Effects of Mach Number and Reynolds Number on the Maximum Lift Coefficient of a Wing of NACA 230-Series Airfoil Sections
Wing was tested with full-span, partial-span, or split flaps deflected 60 Degrees and without flaps. Chordwise pressure-distribution measurements were made for all flap configurations.. Peak values of maximum lift coefficient were obtained at relatively low free-stream Mach numbers and, before critical Mach number was reached, were almost entirely dependent on Reynolds Number. Lift coefficient increased by increasing Mach number or deflecting flaps while critical pressure coefficient was reached at lower free-stream Mach numbers.
Date:
May 1947
Creator:
Furlong, G. Chester & Fitzpatrick, James E.
Object Type:
Report
System:
The UNT Digital Library
LeTourneau Tech's NOW, Volume 1, Number 31, August 31, 1947
Monthly newsletter LeTourneau Technical Institute of Texas containing religious articles, updates about news and events on campus, and other information of interest to students.
Date:
August 31, 1947
Creator:
LeTourneau Technical Institute
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Spark-Timing Control Based on Correlation of Maximum-Economy Spark Timing, Flame-Front Travel, and Cylinder Pressure Rise
Note presenting an investigation conducted on a full-scale air-cooled cylinder in order to establish an effective means of maintaining maximum-economy spark timing with varying engine operating conditions. Variable fuel-air ratio runs were conducted in which relations were determined between the spark timing and basic factors in engine operation, flame-front travel, and cylinder pressure rise. An instrument for controlling spark timing was developed that automatically maintained maximum-economy spark timing with varying engine operating conditions.
Date:
February 1947
Creator:
Cook, Harvey A.; Heinicke, Orville H. & Haynie, William H.
Object Type:
Report
System:
The UNT Digital Library
Spark-Timing Control Based on Correlation of Maximum-Economy Spark Timing, Flame-Front Travel, and Cylinder-Pressure Rise
"An investigation was conducted on a full-scale air-cooled cylinder in order to establish an effective means of maintaining maximum-economy spark timing with varying engine operating conditions. Variable fuel-air-ratio runs were conducted in which relations were determined between the spark travel, and cylinder-pressure rise. An instrument for controlling spark timing was developed that automatically maintained maximum-economy spark timing with varying engine operating conditions" (p. 1).
Date:
1947
Creator:
Cook, Harvey A.; Heinicke, Orville H. & Haynie, William H.
Object Type:
Report
System:
The UNT Digital Library
Description of Russian Aircraft Engines "AM 35" and "AM 38"
The Russian AM 35 and AM 38 aircraft engines have superchargers with a swirl throttle, which appears to be a purely Russian development. This paper gives the results of test runs of the two engines, including the effects of the swirl throttle on engine performance.
Date:
June 1947
Creator:
Denkmeier, H. & Gross, K.
Object Type:
Report
System:
The UNT Digital Library