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Viewing 181 to 210 of 5866
2014-05-29
Standard
AIR1106B
The scope of this SAE Aerospace Information Report (AIR) is to discuss factors affecting visibility of aircraft navigation and anticollision lights, enabling those concerned with their use to have a better technical understanding of such factors, and to aid in exercising appropriate judgment in the many possible flight eventualities.
2014-05-20
Article
The key architectural approach to minimize connectivity interfaces acts as a secure, intelligent gateway between the car and external devices or networks to better guard against malicious or sensitive data from being compromised.
2014-05-13
Article
Vehicular traffic deaths decline, but pedestrian fatalities unchanged. Proposed solutions range from greater use of roundabouts, new signaling, and vehicles with pedestrian detection and auto-braking. Some success found with driver and pedestrian education. "Vision Zero" program adopted in New York City.
2014-05-09
Journal Article
2014-01-9127
Kazumoto Morita, Michiaki Sekine
The number of elderly drivers is increasing in Japan and ensuring the safety of elderly drivers is becoming an important issue. The authors previously conducted an analysis of the characteristics of accidents and traffic violations by elderly drivers based on the number of accidents in which they were rear-ended. This method was used in order to exclude the influence of driving frequency. As a result of that analysis, it was found that the likelihood of violations committed by elderly drivers was not particularly higher than in other age groups, while the likelihood of accidents caused by them was higher. The risk of causing an accident was judged to be about two times higher in elderly drivers than in the 35-44 year age group. However, the methodology presupposed that collisions in which a driver is rear-ended are accidents that occur randomly, and that they occur with the same probability in each age group.
2014-05-09
Journal Article
2014-01-9126
Nikolina Samardzic
Values of the speech intelligibility index (SII) were found to be different for the same speech intelligibility performance measured in an acoustic perception jury test with 35 human subjects and different background noise spectra. Using a novel method for in-vehicle speech intelligibility evaluation, the human subjects were tested using the hearing-in-noise-test (HINT) in a simulated driving environment. A variety of driving and listening conditions were used to obtain 50% speech intelligibility score at the sentence Speech Reception Threshold (sSRT). In previous studies, the band importance function for ‘average speech’ was used for SII calculations since the band importance function for the HINT is unavailable in the SII ANSI S3.5-1997 standard.
2014-05-08
WIP Standard
ARP5932
This SAE Aerospace Recommended Practice (ARP) will provide general guidelines and procedures for servicing and maintaining oxygen systems. Such methods and procedures may be applied to gaseous, liquid, chemical and portable oxygen systems. These guidelines and recommendations will be provided to engineering and maintenance personnel for airlines, modification centers and third party maintenance contractors, to be used while performing maintenance on oxygen systems and components.
2014-04-24
Article
Airbus Helicopters Japan recently inaugurated Japan’s first full flight simulator (FFS) for helicopters at its facilities located in the Kobe Airport vicinity. The simulator is configured to represent Airbus Helicopters’ light twin-engine EC135 P2+ rotorcraft, and has received Level C certification from the Japan Civil Aviation Bureau.
2014-04-24
Article
With 76% high-strength and ultra-high-strength steel, larger welds, and extensive use of structural adhesives, the design is predicted to get top ratings from NHTSA and IIHS. Other highlights are a direct-injection 3.3-L V6, hands- and feet-free liftgate, and UVO infotainment with new eServices.
2014-04-22
Article
In part to improve safety performance of its vehicles and to enhance cross-system integration, General Motors is restructuring its global vehicle-engineering organization. It will now consist of two units: Global Product Integrity and Global Vehicle Components and Subsystems.
2014-04-16
Article
In the wake of its ignition switch recall, General Motors CEO Mary Barra has announced creation of a Global Product Integrity organization. Housed within the Global Production Development group, it will "build on the formula and specific actions we have taken in recent years to lead the industry in vehicle dynamics," Barra said at the 2014 New York International Auto Show.
2014-04-14
Article
The Visteon- and Cisco-developed OASIS (Optimized, Adaptable, Secure, Intelligent, Seamless) concept makes secure car-to-cloud communications the prerequisite for unlocking vehicle network connectivity-associated benefits.
2014-04-14
Standard
ARP5446A
These recommendations are provided to aid the international air transport industry by identifying a standard, minimum amount of safety instructions that should be given to sight-impaired passengers. This document is not meant to address problems associated with communicating safety information to sight- impaired passengers who are also hearing impaired or non- conversant in the language(s) used by the cabin crew to disseminate general safety information to passengers. Aircraft operators are encouraged to customize the safety instructions for their own operations in order to ensure that required safety information is provided to sight-impaired passengers.
2014-04-14
Standard
ARP1283B
This SAE Aerospace Recommended Practice (ARP) establishes design guidance and photometric values for adequate cargo compartment and cargo access lighting systems for ground handling. The adoption of a standard set of illuminance values, found appropriate for the performance of the task in specified areas should expedite ground handling.
2014-04-10
Article
With the large commercial van market continuing to grow, Mercedes-Benz continues to improve its Sprinter van to keep it the “best” in a crowded field.
2014-04-10
Article
The system uses specific Sport Mode algorithms with modules from the high-speed CAN data bus, including those for adaptive cruise control, forward facing camera, all-wheel drive, shift-by-wire, electric power steering, transmission, and powertrain.
2014-04-10
Article
Dangers from malware, including ransom demands, must be pro-actively avoided as industry and owners enter era of connected cars. For all their conveniences, telematics could pose ugly series of risks that will require new approaches to prevent, explains Cisco Systems scientist to SAE Congress attendees. Vulnerabilities are in many areas, including the OBD system.
2014-04-05
Article
According to Lord's Andrew J. Winzenz, companies wanting to compete in the industrial market must expand their expertise beyond components to system-level design.
2014-04-03
Article
A new occupant-protection technology from TRW Automotive Holdings Corp. has the passenger-seat airbag deploying from the headliner instead of the dashboard. It is being launched on the Citroën C4 Cactus.
2014-04-03
Standard
ARP5647A
This SAE Aerospace Recommend Practice (ARP) is intended to identify both safety related best practices and unique design considerations of metal halides High Intensity Discharge (HID) lamps and power supplies in aircraft applications.
2014-04-03
WIP Standard
ARP6503
This document provides guidance for in-flight rest facilities provided for use by cabin crew on commercial transport aircraft.. This document is applicable to dedicated cabin crew rest facilities. Passenger seats used to provide “cabin crew rest facilities” are not within the scope of this document.
2014-04-02
WIP Standard
J284
This SAE Recommended Practice presents the general uses, limitations on use, and appearance of the safety alert symbol.
2014-04-01
Article
All new vehicles under 10,000 lb will be required to have rearview camera technology under a final rule issued March 28 by NHTSA (U.S. National Highway Traffic Safety Administration). The rule applies to vehicles ranging from passenger cars to trucks and buses (any vehicle under 10,000 lb) built on or after May 1, 2018.
2014-04-01
Technical Paper
2014-01-0695
Mingyu Wang, Debashis Ghosh, Edward Wolfe, Kuo-huey Chen, Jeffrey Bozeman
Abstract Traditional vehicle air conditioning systems are designed to cool the entire cabin to provide passenger comfort. Localized cooling, on the other hand, focuses on keeping the passenger comfortable by creating a micro climate around the passenger. Such a system also easily adapts to the number of passengers in the car and enables zonal control. The net impact of the localized cooling is that equivalent comfort can be achieved at reduced HVAC energy consumption rate. The present paper reports on a vehicle implementation of localized cooling using Thermoelectric Devices and the resulting energy saving.
2014-04-01
Technical Paper
2014-01-0685
Devin Furse, SeKil Park, Lee Foster, Simon Kim
Abstract An innovative system has been developed to remotely monitor and record customer usage patterns of the Hyundai Genesis HVAC system in real time by smartphone. The data monitored includes dozens of HVAC-related parameters, including driver and passenger set temperature, blower setting, mode and intake position, internal software parameters, etc. This information and understanding of real-world usage of American customers enables design and test engineers to better satisfy customer demands for automatic temperature control performance. This study identifies areas in need of improvement Preliminary findings of this study suggest that auto mode usage is highest in mild temperatures and lowest in hot soaking conditions. In hot soak conditions (above 35C cabin temperature), the majority of American customers manually control the temperature and blower speed.
2014-04-01
Technical Paper
2014-01-1903
Thomas Juergen Boehme, Tobias Sehnke, Matthias Schultalbers, Torsten Jeinsch
Abstract In this paper an energy management is proposed which is optimal to certain driving scenarios which can be clustered into freeway, rural and urban situations. This strategy is non-predictive but uses information about the current driving situation provided by modern navigation systems to identify the current road type. Based on this information a set of simplified optimal control problems are solved offline via an indirect shooting algorithm. By relaxation of the problem formulation, the solutions of these optimal control problems can be stored into easily implementable maps. The energy management control is then determined from these maps during vehicle operation using the current road type, the vehicle speed and the required wheel-torque. The strategy is implemented in a dSPACE MicroAutoBox and validated on a near mass-production vehicle. The proposed methodology has shown fuel savings on a real world drive cycle.
2014-04-01
Technical Paper
2014-01-0892
Eric Frank, Peter Jacobsen
Abstract As the demand for Sound Quality improvements in vehicles continues to grow, robust analysis methods must be established to clearly represent end-user perception. For vehicle sounds which are tonal by nature, such as transmission or axle whine, the common practice of many vehicle manufacturers and suppliers is to subjectively rate the performance of a given part for acceptance on a scale of one to ten. The polar opposite of this is to measure data and use the peak of the fundamental or harmonic orders as an objective assessment. Both of these quantifications are problematic in that the former is purely subjective and the latter does not account for the presence of masking noise which has a profound impact on a driver's assessment of such noises. This paper presents the methodology and results of a study in which tonal noises in the presence of various level of masking noise were presented to a group of jurors in a controlled environment.
2014-04-01
Technical Paper
2014-01-0879
Jan-Mou Li, David Smith
Abstract Driver is a key component in vehicle simulation. An ideal driver model simulates driving patterns a human driver may perform to negotiate road profiles. There are simulation packages having the capability to simulate driver behavior. However, it is rarely documented how they work with road profiles. This paper proposes a new truck driver model for vehicle simulation to imitate actual driving behavior in negotiating road grade and curvature. The proposed model is developed based upon Gipps' car-following model. Road grade and curvature were not considered in the original Gipps' model although it is based directly on driver behavior and expectancy for vehicles in a stream of traffic. New parameters are introduced to capture drivers' choice of desired speeds that they intend to use in order to negotiating road grade and curvature simultaneously. With the new parameters, the proposed model can emulate behaviors like uphill preparation for different truck drivers.
2014-04-01
Technical Paper
2014-01-0881
Mitsuru Enomoto, Michiko Kakinuma, Nobuhito Kato, Haruo Ishikawa, Yuichiro Hirose
Abstract Design work for truck suspension systems requires multi-objective optimization using a large number of parameters that cannot be solved in a simple way. This paper proposes a process-based systematization concept for ride comfort design using a set-based design method. A truck was modeled with a minimum of 13 degrees of freedom, and suspension performance under various vehicle speeds, road surface conditions, and load amounts was calculated. The range of design parameters for the suspension, the range of performance requirements, and the optimal values within these ranges were defined based on the knowledge and know-how of experienced design engineers. The final design of the suspension was installed in a prototype truck and evaluated. The performance of the truck satisfied all the objectives and the effectiveness of the set-based design approach was confirmed.
2014-04-01
Technical Paper
2014-01-0875
Mark William Arndt
Abstract The current certification requirements under CFR 49, Part 567 state that GVWR of a motor vehicle shall not be less than the sum of the unloaded vehicle weight, rated cargo weight and 150 pounds times the number of designated seating positions. Actual occupant weight distributions versus certified weight per occupant seat causes a potential conflict between a vehicle's in-use weights versus its certified GVWR. Population weight distributions were developed based upon The Center for Disease Control's (CDC) publication of 2007 - 2010 anthropometric reference data and publically available weights of a special population from high school football teams. For five buses from small (18-seat) to large (55-seat), key parameters were measured.
2014-04-01
Technical Paper
2014-01-0877
Prasad Kumbhar, Ning Li, Peijun Xu, James Yang
In vehicle driving environment, the driver is subjected to the vibrations in horizontal, vertical, and fore-aft directions. The human body is very much sensitive to whole body vibration and this vibration transmission to the body depends upon various factors including road irregularities, vehicle suspension, vehicle dynamics, tires, seat design and the human body's properties. The seat design plays a vital role in the vibration isolation as it is directly in contact with human body. Vibration isolation properties of a seat depend upon its dynamic parameters which include spring stiffness and damping of seat suspension and cushion. In this paper, an optimization-based method is used to determine the optimal seat dynamic parameters for seat suspension, and cushion based on minimizing occupant's body fatigue (occupant body absorbed power). A 14-degree of freedom (DOF) multibody biodynamic human model in 2D is selected from literature to assess three types of seat arrangements.
Viewing 181 to 210 of 5866

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