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Steering Behavior of an Articulated Amphibious All-Terrain Tracked Vehicle

ARIS SpA-Emanuele Rota, Andrea Novara
Politecnico di Torino-Antonio Tota, Mauro Velardocchia
  • Technical Paper
  • 2020-01-0996
To be published on 2020-04-14 by SAE International in United States
This paper presents a study related to an Articulated Amphibious All-Terrain Tracked Vehicle (ATV) characterized by a modular architecture. The ATV is composed by two modules: the first one hosts mainly the vehicle engine and powertrain components, meanwhile the second one can be used for goods transportation, personnel carrier, crane and so on. The engine torque is transmitted to the front axle sprocket wheel of each module and finally distributed on the ground through a track mechanism. The two modules are connected through a multiaxial joint designed to guarantee four relative degrees of freedom. To steer the ATV, an Electro Hydraulic Power System (EHPS) is adopted, thus letting the vehicle steerable on any kind of terrain without a differential tracks speed. The paper aims to analyze the steady-state lateral behavior of the ATV on a flat road, through a non-linear mathematical vehicle model built in Matlab/Simulink environment. The model describes the vehicle main planar motion and the interaction between the two modules through the application of a hydraulic steering torque. The model simulates steady-state handling…
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Comparison of EVSE Charge Management Systems for Limited Electrical Infrastructure

Sacramento Municipal Utility District-Dwight MacCurdy, Carol D. Kay, Karun Kumar, Deepak J. Aswani
  • Technical Paper
  • 2020-01-0532
To be published on 2020-04-14 by SAE International in United States
The installed cost of EV charging stations can vary widely depending on site specific conditions and the number and type of EV charging stations (EVSE) to be installed. The cost can exceed $10,000 per EVSE if panel or switch gear upgrades are needed or if trenching is required. These infrastructure costs can pose a significant barrier to EV adoption for fleet operators or for employers who wish to provide EV charging for employees. Smart EVSE can play a role in managing the infrastructure and installation cost of EVSE. Such products can enable charging when there are limitations in electrical capacity. Three types of smart EVSE are tested and compared: 1) fully autonomous/local control, 2) networked/cloud managed control, and 3) a hybrid of local and cloud managed control.
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Democratize AV Technology!

Autonomous Vehicle Engineering: January 2020

Lindsay Brooke
  • Magazine Article
  • 20AVEP01_04
Published 2020-01-01 by SAE International in United States

Aptiv's new generation of open-sourced architectures based on a few central processors aims to speed AV adoption. CTO Glen DeVos explains.

The software-intensive, electrified and increasingly automated vehicle will define the 2020s. Its rise is driving both the industry-wide re-thinking of electrical architectures and the growth of engineering employment behind it. At the forefront of this trend is Aptiv, the technology Tier 1 spun off from Delphi in 2017. It now has more than 19,000 engineers among its 160,000 staff, comprising one of the highest engineer-to-employee ratios among large suppliers.

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Corrosion Test Master Establishment

Wheel Standards Committee
  • Ground Vehicle Standard
  • J2636_201910
  • Current
Published 2019-10-21 by SAE International in United States
This SAE lab recommended practice may be applied to corrosion test methods such as salt spray, filiform, Corrosion creep back, etc. This procedure is intended to permit corrosion testing to be assessed between Laboratories for correlation purposes.
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Transformational Technologies Reshaping Transportation - An Academia Perspective

Ohio State University-Giorgio Rizzoni, Qadeer Ahmed, Mukilan Arasu, Pradeep Sharma Oruganti
Published 2019-10-14 by SAE International in United States
This paper and the associated lecture present an overview of technology trends and of market and business opportunities created by technology, as well as of the challenges posed by environmental and economic considerations. Commercial vehicles are one of the engines of our economy. Moving goods and people efficiently and economically is a key to continued industrial development and to strong employment. Trucks are responsible for nearly 70% of the movement of goods in the USA (by value) and represent approximately 300 billion of the 3.21 trillion annual vehicle miles travelled by all vehicles in the USA while public transit enables mobility and access to jobs for millions of people, with over 10 billion trips annually in the USA creating and sustaining employment opportunities.Commercial vehicles provide access to work and leisure time for millions of people every day and deliver and distribute the goods that make our economy move, from raw materials, to components, to finish products, as well as providing a multitude of services and support functions. While on-road trucks and buses represent only part…
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The Road to the Top is Not on the Map: Conversations with Top Women of the Automotive Industry

Terry Barclay
Center For Automotive Research-Carla Bailo
  • Book
  • R-491
Published 2019-09-04 by SAE International in United States

Carla Bailo, CEO of the Center for Automotive Research, and Terry Barclay, CEO of Inforum, bring together over 30 of the most influential women in the automotive industry to share their insight and advice. From suppliers to OEMs, they hail from every corner of the industry.

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Feasibility Study of Portable Water Desalination Systems for Water Contingencies at Remote Navy Installations

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_07
Published 2019-08-01 by SAE International in United States

Navy explores ways to ensure an uninterrupted supply of potable water at remote installations.

The Department of the Navy (DON) has major installations located around the world. Twenty-two main installations operate outside the continental United States (OCONUS) and rely on on-base water processing facilities. These facilities serve a total population of 71,000 military and civilian personnel, and the water plants have a total production capacity of 15.7 million gallons per day.

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Training and Approval of Heat-Treating Personnel

AMS B Finishes Processes and Fluids Committee
  • Aerospace Standard
  • ARP1962B
  • Current
Published 2019-06-11 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) describes training and approval of personnel performing certain heat-treating and associated operations that could have a material impact on the properties of materials being heat treated. It also recommends that only approved personnel perform or monitor the functions listed in Table 1.
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Aerospace Work Platforms - More than Meets the Eye

Aerospace & Defense Technology: June 2019

  • Magazine Article
  • 19AERP06_13
Published 2019-06-01 by SAE International in United States

Today's work platforms are far more complex than the simple designs of the past.

For maintenance personnel in the aerospace industry to do their jobs effectively, they need to be able to get physically close to the equipment they are working on. This statement sounds obvious, but in order to meet this requirement, it is very important to utilize quality work platforms. Although most people are familiar with the basic uses of work platforms, there is not always much thought given to everything that goes into their design and fabrication.

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Reconstruction of 3D Accident Sites Using USGS LiDAR, Aerial Images, and Photogrammetry

Kineticorp LLC-Toby Terpstra, Jordan Dickinson, Alireza Hashemian, Stephen Fenton
Published 2019-04-02 by SAE International in United States
The accident reconstruction community has previously relied upon photographs and site visits to recreate a scene. This method is difficult in instances where the site has changed or is not accessible. In 2017 the United States Geological Survey (USGS) released historical 3D point clouds (LiDAR) allowing for access to digital 3D data without visiting the site. This offers many unique benefits to the reconstruction community including: safety, budget, time, and historical preservation. This paper presents a methodology for collecting this data and using it in conjunction with aerial imagery, and camera matching photogrammetry to create 3D computer models of the scene without a site visit. To determine accuracies achievable using this method, evidence locations solved for using only USGS LiDAR, aerial images and scene photographs (representative of emergency personnel photographs) were compared with known locations documented using total station survey equipment and ground-based 3D laser scanning. The data collected from three different site locations was analyzed, and camera matching photogrammetry was performed independently by 5 different individuals to locate evidence. On average, the resulting evidence…
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