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Standard
1966-05-15
A photographic technique is described for determining minimum observer-to-aircraft distances during acoustic "fly-over" tests. Possible sources of error are discussed, and it is shown that with ordinary care results are sufficiently accurate to require no correction.
Standard
1966-05-01
This SAE Standard describes the instrumentation and procedures to be used in measuring sound levels at the operator station for self-propelled sweepers as defined in SAE J2130 and self-propelled off-road work machines in categories 1, 2, 4, and 5, of SAE J1116. This SAE document is applicable to machines that have operator stations where the operator can either stand or sit and will be either transported by, or walk with the machine during its operation. The sound levels obtained using this procedure are repeatable and representative of the higher range of sound levels generated by machines under actual field operating conditions. Due to variability of field operating conditions, this data is not intended to be used for operator noise exposure evaluations. Measurement and calculation of the operator's sound exposure should follow SAE J1116.
Standard
1966-04-01
This document covers the general recommendations for cabin lighting in order to provide satisfactory illumination for, but not limited to: a. Boarding and deplaning b. Movement about the cabin c. Reading d. Use of lavatories e. Use of work areas f. Exiting under emergency conditions g. Using stowage compartments, coat rooms, and closets h. Using interior stairways and elevators (lifts)
Technical Paper
1966-02-01
C. C. Colyer
The MS Sequences were introduced in 1958 to give the automotive and the oil industries a common basis for predicting field performance of motor oils. The sequences have been revised periodically to reflect changes in field conditions. Comparisons of laboratory with field data show that the sequences are generally successful in predicting motor-oil performance. Sequences IIA IIIA, adopted in 1965, give better repeatability, reproducibility, and field-test correlations than original Sequences I, II, III. Proposed Sequence VB, which uses an engine with a PCV valve, is being evaluated. The reliability of the antiwear evaluation in the sequences is questionable and indicates need for further revisions. Military qualification tests have been revised to include many of the motor-oil performance parameters evaluated by MS Sequences. However, different policies regarding test engines have thwarted any movement to consolidate the two series of tests.
Technical Paper
1966-02-01
Jay C. Kessler, Stanley B. Wallis
Contained in this paper are detailed explanations and criticisms of aerodynamic tests conducted for the automotive industry. Using 1/10, 3/8, and full scale vehicles, tests were conducted for aerodynamic drag and lift, stability and control, pressure distribution, and flow visualization. Tests were conducted in wind tunnels and on the road. The advantages and disadvantages of each method are discussed and explained at length.
Technical Paper
1966-02-01
John M. Brown
The Sealometer is used for evaluating the performance of lip type oil seals and provides a dimensionless number derived from measuring the increase in temperature of a test shaft operating in a lip seal for a given time interval. With the Sealometer it is possible to study parameters that affect seal performance. As a quality control instrument, the machine provides accurate data for design. Sealometer evaluation offers a quick method of determining the life expectancy of a particular design for a particular application and eliminates the need for long life test programs.
Technical Paper
1966-02-01
E. Eugene Larrabee
This paper describes a three component strain gage balance designed to measure aerodynamic forces exerted on small automobile models when subjected to turbulence in an experimental wind tunnel. The instrument is described and the details of obtaining values with it are fully explained. Although tests were conducted on these models at quarter-scale Reynolds number, results agree closely with similar tests on larger models. The balance makes practical some unusual preliminary investigations before developing full-scale prototypes.
Technical Paper
1966-02-01
G. R. Smith, D. R. Dunlop, D. M. Finch
This report describes equipment designed and built in the Motor Vehicle Devices Testing Facility of the California Highway Patrol, and used to increase laboratory capacity for testing of automotive signal flashers. The new durability test apparatus is capable of handling two or three terminal flashers in groups of 80 at one time, and uses two electronically regulated, solid state power supplies as sources of stable d-c power. The performance test apparatus makes it possible to obtain the operating characteristics of 10 flashers in quick succession through use of a switching control unit and a strip chart recorder.
Technical Paper
1966-02-01
K. R. Dungan
The facilities required to test and launch the Agena vehicle are discussed in this paper. The principal tests and facilities at Sunnyvale, Santa Cruz, and launch bases are described in detail; to avoid obsolesence in the near future and to provide flexibility, extensive advanced planning went into the design of these facilities.
Technical Paper
1966-02-01
R. W. Gray
Automation of high production, high complexity, and high speed testing is often of obvious worth. The use of automation by the “popular” space programs has developed techniques that warrant consideration of systems previously considered to be incompatible with automatic testing, either because of testing difficulty or cost. Manual testing is still a requirement in the developmental testing phase of many programs. It is also an established requirement in many factory level tests. The complete systems approach involving the total mission requirements for factory through launch (or other use) sequence will enable the logical selection of the correct testing elements, both automatic and manual.
Technical Paper
1966-02-01
A. A. Johnston, E. Dimitroff
A technique for determining induction system deposit (ISD) tendencies of a gasoline is described. The technique uses a bench apparatus, designed to simulate the valve and port area of an engine intake system, which provides deposit data correlative to real engines. The apparatus is compact, requires a minimal fuel sample, uses a retainable metal tube as the deposit collecting surface, and has good repeatability. Design of the equipment eliminates the possibility of deposit contamination by dirt, rust and lead precipitate, and both solvent-washed and unwashed data may be obtained. ASTM Gum, engine intake deposit weights, and ISD technique data are compared to illustrate the capabilities of this new technique.
Technical Paper
1966-02-01
Richard W. Armstrong
Abstract In line with the need for a suitable dynamic test procedure to determine the reaction of seat belt hardware and overall effectiveness of the seat belt or harness in constraining the vehicle occupant at various crash angles, a dynamic seat belt tester has been developed by the National Bureau of Standards. This tester was designed to provide a motion as stipulated by the proposed SAE dynamic specifications, and to reduce the cost, size, and power required in previously designed testers based on the sled principle. A progress report on the performance of this test device to date is given, including a description of its major components and general operation.
Technical Paper
1966-02-01
W. W. Clingan, R. W. Burchell
Six diesel engine crankcase oils, varying widely in additive type, were tested in diesel field service as well as several standardized laboratory diesel engine tests. The 150,000 mile field test was run in urban buses powered by a popular make of United States two-stroke cycle diesel engine. It was found that the best field deposit control was obtained with an oil containing a high level of succinimide (ashless dispersant). The parallel program showed that the laboratory engine tests did not predict relative field performance regarding ring sticking or sludge and varnish deposit control.
Technical Paper
1966-02-01
M. L. Haviland, M. C. Goodwin, J. J. Rodgers
Controlled-slip differentials (CSD) improve car operation under wheel slipping conditions. The performance of CSD's is dependent upon two criteria associated with clutch friction: “chatter” and “effectiveness.” “Chatter” is an undesirable noise which may occur during differential action. “Effectiveness” is a measure of the ability of the CSD clutches to transfer torque, during wheel slippage, to the wheel with the greater traction. The objective of this investigation was to definitely establish the cause of chatter, measure CSD effectiveness, and relate friction characteristics of lubricants to CSD operation. In tests with an instrumented car, it was found that both chatter and effectiveness are strongly influenced by the lubricant. Chatter occurred with lubricants that produced an increase in clutch friction with decreasing sliding speed. Chatter did not occur with lubricants containing friction modifiers which produced a decrease in clutch friction with decreasing sliding speed. Unfortunately, these friction modifiers also reduced the CSD effectiveness by reducing the clutch friction.
Technical Paper
1966-02-01
Enzo Franchini
A description is given of the technique used by FIAT, where three simple and economical methods for testing the complete car have been set up, namely, a static compression test, a dynamic test on catapult, and collision road tests of radio guided cars (controlled from other cars or from helicopters). The results are reciprocally integrating so as to give a thorough understanding of the behavior of several car models in collisions occurring in different ways and at different speeds. About 200 full-scale tests have been run so far and the results are in fair agreement with findings from actual road accidents. The information obtained has permitted progressive design refinements, and has shown the way towards constructional improvements likely to increase car safety.
Technical Paper
1966-02-01
Ross K. Brown
The magnitude and frequency of extreme loads are essential to an accurate calculation of life when cumulative fatigue damage theories are employed. During field load measurements of limited duration, extreme loads are usually not encountered. The magnitude of extreme loads can be determined by abusive tests but this does not provide any information on their frequency. It has been found that normal operation loads usually conform to one of the many statistical distributions. By plotting normal operation loads on probability paper, the frequency of extreme loads can be estimated.
Technical Paper
1966-02-01
J.M. CHANDLER, J.H. STRUCK, W.J. VOORHIES
Technical Paper
1966-02-01
E. J. Hughes, G. O. Boston, P. A. Diddens
A new method of testing Automatic Transmission Main Control Assemblies has been developed which provides increased reliability in transmission valve body testing. This method employs an electro-hydraulic test stand sequenced by an IBM 1710 computer system. The computer controls the test cycle, accurately compares test values against test specification parameters, records all test values, and determines whether the transmission Main Control meets all specifications.
Technical Paper
1966-02-01
Jose L. Bascunana, Lewis D. Conta
Research on charge stratification of spark ignition engines has been under way at the University of Rochester for some time. Most recently the successful propane burning engine previously reported before the SAE has been converted to liquid fuel operation. This paper discusses some of the problems involved in the conversion and presents the results of tests on the liquid fuel version of the engine.
Technical Paper
1966-02-01
W. S. Longhurst
A limited test program is being conducted on a prototype of the Canadair CL-84 tilt-wing V/STOL aircraft to evaluate its stability and control design objectives. The results to date indicate that only very minor modifications were necessary with regard to the flying control criteria previously established through analysis, fixed-base simulator studies, and variable-stability helicopter tests. In general, the qualitative assessment made thus far of the handling qualities of the CL-84 has proven the adequacy of the established criteria for stability and control performance for systems as complex as that of the CL-84.
Technical Paper
1966-02-01
G. C. Hass, M. P. Sweeney, J. N. Pattison
A study of driving conditions in the central Los Angeles area has led to the formulation of a new chassis dynamometer test cycle for exhaust emissions testing. A single vehicle was used to develop a street route representing a variety of morning peak hour commute trips. A cycle was then compared against the street route with seven vehicles of varying size to assess the validity of the cycle in terms of mode pattern and exhaust emissions.
Technical Paper
1966-02-01
Kurt Melcher
The dynamometer evaluation of internal combustion engines has involved a great deal of tedious interpretation and presentation of results. In the past, engine test cells have not been fully utilized, and skilled test engineers have been occupied with routine work, time which could better be spent in actual development work. This paper describes steps taken by Robert Bosch GmbH in its new engine test laboratory, to streamline procedures for observation, computation, plotting, and presentation of results. Measurements from the engine test cell are delivered electrically to a central data processing center. These data are recorded, computed electronically, and plotted on an electric plotting machine functioning from punched paper tape.
Magazine
1966-01-01
Magazine
1965-11-01
Standard
1965-11-01
The purpose of this report is to provide information on ozone and its control in high altitude aircraft environmental systems. Sources of this information are listed in the selected bibliography appearing at the end of this report, to which references are made throughout.
Technical Paper
1965-10-20
R. G. RIESER, G. E. MICHAELS
Standard
1965-10-15
This Aerospace Information Report provides technical information to assist the development of specific cleaning methods for filter elements. Consideration is limited to filter elements which are designated as 'cleanable' (not 'disposable'), but which cannot be cleaned by simple and obvious procedures. Cleaning methods developed according to this report should be evaluated by the methods of ARP 725 and ARP 849. Satisfactory cleaning methods can be developed for most 'cleanable' filter elements. Technical or economic feasibility of the cleaning method may be limited, however, by incompatibility of filter-element construction materials, by mechanical weakness or lack of corrosion resistance to withstand repeated or continued cleaning, or by the presence of unusually tenacious contamination. These factors must be considered when selecting approaches to the development of specific methods.ic methods.ic methods.ic methods.
Magazine
1965-10-01
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