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Driverless America

Joseph E. Hummer-Joseph Hummer
  • Book
  • R-492
Published 2020-03-13 by SAE International in United States

Driverless America predicts how the change to automated vehicles will affect many aspects of our lives and the surrounding landscape. The impact will be widespread throughout our diverse population and landscapes. Many impacts will be positive, such as fewer people dying in crashes, disabled people gaining mobility, more affordable housing, better water quality, and lower greenhouse gas emissions. But we may experience downsides such as jobs lost in construction and trucking, abandoned gas stations, fewer organ donations, and more difficult hurricane evacuations. This book is intended to spark discussions that encourages people start thinking ahead to the changes that will occur, hastening the positive ones and acting to mitigate the negative ones.

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McLaren: The Engine Company

Roger Meiners
  • Book
  • R-485
Published 2020-03-13 by SAE International in United States

McLaren: The Engine Company is the previously untold story of McLaren Engines, an American company founded in 1969 by Bruce McLaren and his partners to build engines for McLaren's legendary Can-Am and Indy Cars. From this base in suburban Detroit were born the mighty big-block Chevrolet V8s that powered the iconic orange cars to two of their five consecutive Cam-Am championships. McLaren's busy dyno rooms also spawned the howling turbo Offenhausers that put Mark Donahue and Johnny Rutherford in Victory Lane at Indianapolis three times between 1972 and 1976.

For decades this non-descript shop was the hotbed of horsepower for factories and top independents alike. McLaren Engines developed the turbocharged Cosworth DFV Formula 1 engine that powered Indy cars for both Team McLaren and Penske Racing. It rendered BMW's turbo engine for U.S. IMSA racing that later became BMW's Formula 1 weapon. The long list of race engines developed here powered Buick Indy and IMSA cars, BMW GTP cars, Cadillac LeMans prototypes, Porsche Trans-Am 944s and David Hobbs' F5000 single seaters. There were McLaren-built big-block turbo V8s for offshore boat racing and even a Cosworth-Vega engine for American dirt tracks!

Author Roger Meiners combines his life-long passion for motor racing and technology with his historian's sensibilities to make the engines, cars, and key personalities come alive within this book's pages. Ride along with Meiners as he uncovers little-known details of the company's transition from a race shop to an engineering company, developing lust-worthy performance cars such as the sensational 1987 Buick GNX, the 1989 Pontiac Grand Prix Turbo, the FR500 Ford Mustang concept, and other projects that the public never saw. Today the company, known as McLaren Engineering, is a subsidiary of Canada-based Linamar Corporation, and is sought after by global automakers for its unrivaled testing, development and manufacturing capability.

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Full Adaptive Forward Lighting Systems

Road Illumination Devices Standards Committee
  • Ground Vehicle Standard
  • J2838_202003
  • Current
Published 2020-03-12 by SAE International in United States
This SAE standard provides test procedures, performance requirements, design guidelines and installation guidelines for full adaptive forward lighting systems (AFS).
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Test Methods for Insulated Electric Wire

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS4373F
  • Current
Published 2020-03-12 by SAE International in United States
This standard describes test methods for insulated, single conductor, electric wire intended for aerospace applications. Particular requirements for the wire being tested need to be specified in a procurement document or other detail specification. Suggested minimum requirements are included in the notes at the end of some of the test methods. SAE Performance Standard AS4372 uses some of the tests in this document for evaluating comparative performance of aerospace wires.
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Color-Coded Incandescent Flange Base T-1 and T-1 3/4 Lamps for Voltage Identification

A-20A Crew Station Lighting
  • Aerospace Standard
  • AS4156C
  • Current
Published 2020-03-12 by SAE International in United States
This document specifies that black is the only color that can be used for the insulator at the bottom of the base of T-1 and T-1 ¾ Flanged Base lamps.
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Fluid, Jet Reference

AMS G9 Aerospace Sealing Committee
  • Aerospace Material Specification
  • AMS2629F
  • Current
Published 2020-03-12 by SAE International in United States
This specification covers a mixture of liquid hydrocarbons and soluble additives.
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Development of an Overall Vehicle Sizing and Packaging Tool for Autonomous Electric Buses in the Early Concept Phase

SAE International Journal of Commercial Vehicles

Nanyang Technological University, Singapore-Heong Wah Ng
TUMCREATE Limited, Singapore-Ganesh Sethuraman, Manfred Schwarz, Stefan Maxl, Aybike Ongel
  • Journal Article
  • 02-13-01-0002
Published 2020-03-11 by SAE International in United States
The demand for autonomous electric public transport is increasing globally. The operational requirement of these autonomous vehicles differs widely. Hence, there is an increase in the demand for different vehicle sizes and configurations. This has led to a number of methods and improvements in the vehicle package development process. This article presents the development of a holistic parametric packaging tool for autonomous vehicles called Autonomous Electric Vehicle Tool (AEV tool). The tool is designed with MATLAB, and via a Graphical User Interface (GUI), the user can input parameter data, which directly adjusts a parametric Computer-Aided Design (CAD) model developed with CATIA software. The overall vehicle dimensions, as well as the size of single components, can be changed, and different topology configurations can be chosen. Moreover, it is possible to visualize the CAD models compare them with each other according to the vehicle’s specifications, such as the external dimensions and weight. The tool is able to develop vehicle concepts for 4 m to 12 m long autonomous electric buses. The developed tool is validated with respect…
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Parametric Studies on Airfoil-Boundary Layer Ingestion Propulsion System

Central Aerohydrodynamic Institute (TsAGI), Russia-Leonid L. Teperin
Peking University, China-Mostafa E. El-Salamony
  • Journal Article
  • 01-13-01-0003
Published 2020-03-11 by SAE International in United States
From the fact that a propulsor consumes less power for a given thrust if the inlet air is slower, simulations are conducted for a propulsor imposed behind an airfoil as ideal boundary layer ingestion (BLI) propulsor to stand on the benefits of this configuration from the point of view of power and efficiency and to get a closer look on the mutual interaction between them. This interaction is quantified by the impact on three main sets of parameters, namely, power consumption, boundary layer properties, and airfoil performance. The position and size of the propulsor have great influence on the flow around the airfoil. Parametric studies are carried out to understand their influence. BLI propulsor directly affects the power saving and all of the pressure-dependent parameters, including lift and drag. For the present case, power saving reached 14.4% compared to the propeller working in freestream.
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Passenger and Light Truck Tire Traction Device Profile Determination and Classification

Highway Tire Committee
  • Ground Vehicle Standard
  • J1232_202003
  • Current
Published 2020-03-11 by SAE International in United States
The purpose of this SAE Recommended Practice is to set up a guide as to body, frame, and wheelhouse clearances required to accommodate tire traction devices (e.g., tire chains), and to provide a means of classifying these devices according to their maximum profile. In addition, it enables the vehicle manufacturer to specify the proper traction devices for each vehicle. This report is intended to apply to passenger cars and light trucks up to 4535 kg (10 001 lb) GVW. This document is not to be construed as approving traction device operation at conditions exceeding manufacturer's specifications, although short periods of such operations may be required for test purposes.
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Fuel-Optimal Centralized Control of a Cooperating Car Swarm

SAE International Journal of Connected and Automated Vehicles

Cedarville University, USA-Danielle Fredette
The Ohio State University, USA-Umit Ozguner
  • Journal Article
  • 12-03-01-0004
Published 2020-03-11 by SAE International in United States
How should a group of cars cooperate in order to save the most fuel? To provide insight into the driving behavioral objectives and control possibilities of a cooperating vehicle group sharing the goal of overall fuel savings, a method for collaborative dynamic eco-driving is developed by applying fuel-optimal centralized control to a swarm-inspired model of two-dimensional (2D) vehicle interactions. In this article, a continuous time, nonlinear system model which describes both lateral and longitudinal dynamics is used for purposes of control design, with the objective to minimize the amount of fuel used by the whole group of cars. This is accomplished using the semi-analytical optimal control algorithm of the conditional gradient method. The result of this synthesis is a type of collaborative dynamic eco-driving that offers insight into the way collaborating vehicles ought to interact on the road in order to save collective fuel. It is shown that centralized, collaborative control lowers total cost for the group compared to decentralized control. Several application scenarios are investigated as a demonstration of the proposed control method.
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