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The results of an investigation of the relationship between course deviation and quantified brake faults are presented in this paper. The development of chassis dynamometer brake testing criteria, correlated with road test and physical inspection results, is discussed. Statistics on the prevalence of in-use vehicle brake system faults are given. The improvements in perception and repeatability enabled by computer automation of the dynamometer brake tester are described.

PROBLEMS OF HIGHWAY VEHICLE DYNAMIC RESPONSE AND CONTROL IN EMERGENCY BRAKING MANEUVERS AND THE APPLICABILITY OF AUTOMATIC BRAKING CONTROL SYSTEMS FOR IMPROVING VEHICLE PERFORMANCE IN THESE MANEUVERS ARE DISCUSSED. IT IS SHOWN THAT AUTOMATIC BRAKING CONTROL SYSTEMS CAN IMPROVE VEHICLE RESPONSE AND HANDLING CHARACTERISTICS IN THE FOLLOWING AREAS: (1) STOPPING DISTANCE, (2) LATERAL STABILITY CHARACTERISTICS IN BRAKING MANEUVERS, AND (3) DIRECTIONAL CONTROL CHARACTERISTICS IN MANEUVERS WITH COMBINED BRAKING AND STEERING. THE METHOD OF APPROACH CONSISTS OF AN ASSESSMENT OF THE STATE-OF-THE-ART IN BREAKING CONTROL SYSTEMS; AN ANALYSIS OF THE EFFECT OF TIRE SLIP ON VEHICLE DYNAMIC RESPONSE; ESTABLISHMENT OF EFFECTIVENESS CRITERIA FOR THE EVALUATION OF THE DYNAMIC RESPONSE OF HIGHWAY VEHICLES IN EMERGENCY BRAKING MANEUVERS; AND HYBRID COMPUTER SIMULATION OF THE RESPONSE OF AN AUTOMOBILE EQUIPPED WITH AUTOMATIC BRAKING CONTROL. CONCLUSIONS AND RECOMMENDATIONS EMPHASIZE THE POTENTIAL BENEFITS TO HIGHWAY SAFETY TO BE GAINED WITH IMPROVEMENTS IN VEHICLE RESPONSE IN ACCIDENT AVOIDANCE MANEUVERS, AND IN PARTICULAR, THE APPLICATIONS OF AUTOMATIC CONTROL SYSTEMS IN THIS AREA. /AUTHOR/

Regenerative life support system development for multiman crews on extended space missions, considering maintainability, reliability and automation

An engine laboratory is described where rationalization and automation is developed to a high level. Function test beds are arranged mainly for accurate measurements and flexible conditions. Endurance test beds feature programmed cycling, automatic data recording and test supervision. All test beds include extensive arrangements for automatic handling of emergency situations with maximum safety for equipment and personnel. Endurance test beds simulate road conditions to a high degree and show considerable savings in test time and running cost compared to vehicle testing of engines. Statistics from equipment reliability are presented.

THE PROGRESS OF COMMUNICATION SATELLITES IS BRIEFLY SUMMARIZED AND THEIR FUTURE TECHNOLOGICAL POTENTIAL IS HIGHLIGHTED. THE PROMISE OF UHF SATELLITES FOR MOBILE COMMUNICATION SERVICES IS DESCRIBED, INCLUDING NEW CONCEPTS PERMITTING INTENSE SHARING OF THESE FREQUENCIES WITH SATELLITES WITHOUT PENALIZING THE ESTABLISHED AND ALLOCATED USAGE. THE FUTURE OF TRAVEL AND THE AUTOMOBILE ARE DISCUSSED INCLUDING THE COMPETITION AMONG VARIOUS MODES OF TRAVEL AND BETWEEN TRAVEL AND ELECTRONICS FOR COMMUNICATING. SOME NEW IDEAS ABOUT FUTURE AUTOMOBILES, A FREEWAY EXPRESS TRANSIT, AND AN AUTOMATED URBAN LOCAL TRANSPORTATION UTILITY ARE PRESENTED, AND AN INTERPRETATION IS MADE ABOUT THE FUTURE ROLE OF THE AUTOMOBILE. /AUTHOR/

A COMPARISON OF VARIOUS LAND TRANSPORTATION SYSTEMS, INCLUDING RAIL RAPID TRANSIT, AUTOMATICALLY GUIDED BUSES, MANUALLY CONTROLLED BUSES ON PRIVATE RIGHT-OF-WAYS, CONVENTIONAL BUSES, AND PERSONAL TRANSIT SYSTEMS IS MADE FOR SMALL AND MEDIUM SIZED CITIES. THESE SYSTEMS ARE COMPARED ON THE BASIS OF COST OF INSTALLATION AND OPERATION AS WELL AS SOCIAL FACTORS. SOME PARAMETRIC COST DATA ARE PRESENTED FOR VARIOUS PARTS OF THE OVERALL TRANSIT SYSTEMS AS WELL AS RELATIVE COST OF EACH SYSTEM FOR A RANGE OF PARTONAGE. /AUTHOR/