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A Long Range Look at Material Research Requirements for Future Military Vehicles

U.S. Army Tank-Automotive Command-Maj. Keith G. Comstock, J. P. Jones
Published 1963-01-01 by SAE International in United States
In line with the need to provide improved components for vehicle applications, the U.S. Army Tank-Automotive Command is currently preparing a detailed technical plan covering materials research and development as related to automotive, tank, and allied equipment. The plan includes (1) establishing and analyzing future systems requirements with regard to design criteria, application, and environment, and (2) determining and outlining the major areas of material development and needs, including characteristics and properties based on the original analysis and requirements. It is hoped that with the successful completion of this plan for setting up a long range research and development program, it will be possible to obtain an accurate forecast of future materials requirements for Army vehicles.
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INCREASING OPERATIONAL EFFECTIVENESS THROUGH MISSION ORIENTED RELIABILITY IMPROVEMENT PROGRAMS

Group Engineer - Operations Analysis Electronic Systems Engineering North American Aviation, Inc. Columbus, Ohio-J. P. Wenzelberger
Reliability Specialist Electronic Systems Engineering North American Aviation, Inc. Columbus, Ohio-R. B. Muirhead
Published 1963-01-01 by SAE International in United States
A method for improving the operational effectiveness of complex weapon systems by applying mission oriented reliability analysis to reliability improvement programs is discussed. Instead of determining a single value for probability of mission success (Ps) which is based on the Ps values of all system components, levels of reliability are determined which are based on levels of performance required by the overall system for the successful completion of defined missions. This approach recognizes that subsystem failure or partial failure may not necessarily prevent satisfactory mission performance.When combined with expected mission frequency distributions, these analyses focus attention on those components and sub-systems which can provide the most improvement in operational effectiveness by an improvement in reliability.In this manner, time and effort spent on reliability improvement of system components, whose are effects on mission success may be negligible, is avoided; and the program efforts are oriented to those components where operational effectiveness payoff is greatest.
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The Dual Brake Inertia Dynamometer - A New Tool for Brake Testing

Johns-Manville Research and Engineering Center-David Sinclair, W. F. Gulick
Published 1963-01-01 by SAE International in United States
This paper is concerned with an extensive study of torque transfer in braking, with the objective of developing a test dynamometer capable of providing reliable data for the design of automotive brakes and brake linings. The studies discussed here show that, because of torque transfer, the four brakes of an automobile are not usually in balance. The factors that cause this transfer cannot be adequately represented in a single brake dynamometer and the dual brake dynamometer is offered as a new tool in brake testing that can be used advantageously in correlating road and dynamometer tests and may even provide more reliable test data than can test cars.
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The Potential of Solar Thermionics for Space Vehicle Power

Allison Div., General Motors Corp-D. L. Dresser
Published 1963-01-01 by SAE International in United States
This paper summarizes theoretical and experimental results obtained during the past four years on the solar thermionic system. These results provide a basis for estimating the future competitive position of the thermionic system versus solar cells in space power. The basic characteristics of the system are outlined and recent developments are reviewed. A comparison is made of the thermionic and solar cell as power sources.
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LW Electric Steering

LeTourneau-Westinghouse Co-Donald R. Buerschinger, John H. Hyler
Published 1963-01-01 by SAE International in United States
This paper reviews the development of the steering of modern Tournapulls, including the basic LW electric system and components which is the basis for this steering. The general arrangement of the power steered hitch is covered along with available control devices. Also included are functions and characteristics of the electric steering and its adaptability to other requirements.
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MEASUREMENT OF ARMY MISSILE EFFECTIVENESS

Reliability Branch, Engineering Division, Procurement and Production Directorate, U. S. Army Missile Command-Robert O. Black
Published 1963-01-01 by SAE International in United States
No Abstract Available.
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Improved Nonsoap Thickened Greases

Ordnance Corps, Rock Island Arsenal-Max T. Fisher, S. Fred Calhoun
Published 1963-01-01 by SAE International in United States
More than 30 military grease specifications are a measure of the many and special demands made on lubricating greases in the Armed Forces. Broad temperature range greases, which require synthetic fluids and nonsoap thickeners, represent the newer specifications. One of these specifies a grease to lubricate ball and roller bearings from −65 F to +450 F. The effect of humidity on the shear stability of a modified bentonite grease is shown. Research problems involved in reaching goals of −65 F to +900 F for lightly loaded bearings and −40 F to 600 F for E.P. applications are discussed.
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Examination of Cleaning Materials, Techniques, and Evaluation Processes on Various Material Surfaces

Aeronautical Div., Minneapolis-Honeywell Regulator Co-George B. Vos
Published 1963-01-01 by SAE International in United States
Solvent cleaning, baking, acid immersion, and hydrogen peroxide immersion cleaning techniques were tried on glass, ceramic, metal, and plastic surfaces. Test results showed that detergent cleaning using 1% detergent solution in distilled water with ultrasonic agitation is the most effective and/or practical technique for removing organic and silicone thin film contamination from such surfaces.Evaluation of cleaned surfaces by water-break technique is sufficiently critical to detect contamination buildup on polished surfaces after 20 minute exposure to air.
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A Utility Fleet - Maintenance Routines and Controls

Duquesne Light Co.-K. G. Scantling
Published 1963-01-01 by SAE International in United States
The maintenance organization of a medium size power company fleet operation is described. The changing nature of the maintenance program has required constant study to determine where concentrated effort is needed, and where routines can be eliminated. The new hydraulically powered devices have created many problems, especially in parts procurement and mechanics training. Principles which should be considered in establishing a maintenance program include the need for simple, practical, easily understood policies with an effective means of follow up.
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Nondestructive Estimation of Resistance of Tire Construction to Tread Wear

Dunlop Rubber Co., Ltd-V. E. Gough
Published 1963-01-01 by SAE International in United States
Conventionally, tires are made with cross-bias cases. In Europe, however, there is increasing interest in other constructions that enable vibration characteristics to be chosen to suit the vibration transmission characteristics of the vehicle. Since construction is an important factor in controlling tread wear, an estimate must be made when initial information about vibration is available, so that unprofitable designs will be given low priority. This paper summarizes the nondestructive techniques used in estimating tread wear resistance of various tire constructions, both in the laboratory and on the drawing board.
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