Unsettled Issues Concerning Urban Air Mobility Infrastructure discusses the infrastructure requirements to effectively integrate UAM services into the overarching urban transportation system to enable multimodal trips and complete origin to destination travel. Unsettled Aspects of the Digital Thread in Additive Manufacturing discusses what the interplay between AM and a digital thread in the mobility industry would look like, the potential benefits and costs, the hurdles that need to be overcome for the combination to be useful, and how an organization can answer these questions to scope and benefit from the combination.
While platooning has the potential to reduce energy consumption of commercial vehicles while improving safety, both advantages are currently difficult to quantify due to insufficient data and the wide range of variables affecting models. Platooning will significantly reduce the use of energy when compared to trucks driven alone, or at a safe distance for a driver without any automated assistance.
However, drivers typically drive closer to each other than recommended to achieve drafting efficiencies, which may shift the benefit of automated platooning to safety gains. More data will be needed to conclusively demonstrate these gains.
Unsettled Issues in Commercial Vehicle Platooning discusses the technologies needed to enable close platooning, including brake system condition monitoring, vehicle-to-vehicle communication, and concrete infrastructure assessment.
The report also looks at driver acceptance of platooning technology from a safety and job security perspective. Automotive millimeter-wave radar is used extensively in vehicle active safety. The Radar Cross Section RCS is one of the main parameters used by the automotive radar system to detect and identify surrounding vehicles.
The RCS describes the electromagnetic scattering properties of objects. This paper describes a method and equipment to measure the RCS.
An automobile-grade radar is used to measure the RCS of typical vehicles. A representative distance between the radar and the vehicle was chosen based on the analysis of the RCS of passenger vehicles in different distances in the near field.
A cost-effective rotating platform was developed to rotate the passenger vehicles for RCS measurement in different azimuth angles. The RCS generated by the rotating platform was analyzed and mitigated. The measurement system can record the synchronized azimuth angle and RCS measurement. This paper redraws and shows the pressure volume Pv- diagram and the T-S diagram of the Carnot cycle, Otto engine, and turbocharged Zhou Engine.
It imitates the thermodynamic analysis of steam or gas turbines, takes into account the transport-work, and rederives the ideal thermal efficiency formula of Otto engines, which is much different from the current one. It is found that the current thermodynamics of internal combustion IC engines neglected the transport-work and the entropy increase in the exhaust pipe, overvalued the ideal thermal efficiency, and is a wrong line in the temperature entropy T-S diagram.
In particular, the entropy increase in the exhaust pipe hides and wastes a lot of mechanical energy, which the turbocharged Zhou Engine can recycle. Demand for electricians was estimated based on projected increases in battery electric vehicle BEV sales. Total BEV sales were projected from current producer plans. Each scenario for charger type and charging location requires different combinations of electrical installation requirements.
The need for types of charging will vary by location and individual preferences. Interviews with practicing electricians and field surveys were performed to assess current capabilities and the need for improvements. Very few current vehicle owners are prepared to make a smooth transition to even level 1 charging.
However, this profession has been dropping over time and is under demand for growth from other areas such as green power.
CASTA strategy for MCP certification builds upon the key terms of robust resource partitioning, robust timing partitioning, and robust partitioning.
In this work, we provide technical insight on the interpretation of these terms by building on derivative terms such as resource capacity, capacity allocation, and capacity verification and violation. We discuss on the scope of applicability of these terms from the low-level hardware components up to the complete MCP platform.
We also dig into the complexities in implementing robust resource and time partitioning, and show that those concepts must be applied bottom-up from hardware-shared resources up to the whole platform.
We have managed to compile downloads for all of the subjects. We advise that you download the SAE Institute Entrance Exams past exam papers for your subjects and go through them as if you were in a real-time exam environment. After completing the paper check your results against the Answers for that paper. This way you w i ll be better able to evaluate your weaknesses relating to that subject. You can now put the extra effort into those weak areas to better understand the subject.
Apart from the verbatim repetition of quest i ons, questions are repeated with a slight difference in their sentence structures. Step 2: Found what you want? Step 3: What if you can't find what you need? All SAE Standards begin with letters. Standards often have various iterations and updates in different years, so be aware of which version you need. The year of the standard is inside its number. For example:. Pay attention to "Current" versus "Historical" standards.
The number of the standard changes with the year it was released, but the title does not. The Stapp Association is dedicated to the dissemination of research findings in impact biomechanics, human tolerance to impact trauma, and crash injury protection.
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