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Autonomous Vehicle Engineering: March 2018

Editorial Autonomy's data binge is more like a 5-course meal. Big Data, Big Challenges Cloud services and multiple partnerships are issues the mobility industry grapples with as data implications expand outside the vehicle. Reinventing the Automobile's Design The convergence of electric propulsion, Level 5 autonomy, and the advent of car-free urban zones, is driving new approaches to vehicle design and engineering. When Steering Isn't Steering Anymore High-level autonomy requires new thinking for even basic vehicle controls. Steer-by-wire technology eases some of the complexities automated driving presents-and offers desirable new possibilities. Autonomy and Electrification: A Perfect Match? Combining SAE Level 4/5 functionality and EV platforms brings chal-lenges-and opportunities for cost reduction and systems optimization. Who's Ahead in the Automated-Driving Race? The 2018 Navigant Research Leaderboard study brings interesting insights on the industry's progress.

SAE Vehicle Electrification: February 11, 2014

Inside the cell walls The high cost of lithium-ion batteries is a prison that has largely kept electric vehicles off the street; the keys to their release are more effective—but not more expensive—cell chemistries.

The Business of Winning

Motorsport Valley® is the dynamic motorsport industry cluster of companies whose global influence is as strong as ever. Learn more about the innovative technologies which continue to deliver world-beating success in the outstanding MIA publication - The Business of Winning. In-depth, up-to-the-minute features and case studies fill the full-colour 100-plus pages. The Business of Winning analyses the pioneering ideas, processes and capabilities that characterize Motorsport Valley® and UK high-performance engineering and features exciting images which bring the story to life. The Business of Winning, supported by UK Trade & Investment, focuses on the successful companies that comprise Motorsport Valley and highlights their presence at the forefront of the global motorsport industry. This is THE case-study source for customers, business leaders, researchers, students and fans.
Referee Material


HPD: HPM II Design Tool SAE Part#EA-3HPD The H-Point design tool is a set of data used during design in conjunction with the H-Point machine. In an IGES file format the HPM II is positioned in 1 neutral position and the 4 pre-defined postures. The file is uploaded into the resident CAD system and the user must add constraints and parametrics. The HPD is referenced in J 826_2002 as a critical component to the design applications of the HPM II.

Voiture Minimum

Voted one of the top ten new design books, this lavishly illustrated book is a colorful account of Le Corbusier's love affair with the automobile, his vision of the ideal vehicle, and his tireless promotion of a design that industry never embraced. Le Corbusier, who famously called a house "a machine for living," was fascinated-even obsessed-by another kind of machine, the automobile. His writings were strewn with references to autos: "If houses were built industrially, mass-produced like chassis, an aesthetic would be formed with surprising precision," he wrote in Toward an Architecture (1923). In his "white phase" of the twenties and thirties, he insisted that his buildings be photographed with a modern automobile in the foreground. Le Corbusier moved beyond the theoretical in 1936, entering (with his cousin Pierre Jeanneret) an automobile design competition, submitting plans for "a minimalist vehicle for maximum functionality," the Voiture Minimum.

Vehicle Aerodynamics, 2018

Vehicle aerodynamic development, drag reduction and fuel economy, handling and stability, cooling flows, surface soiling and water management, vehicle internal environment, tyre aerodynamics and modelling, aeroacoustics, structural response to aerodynamic loading, simulating the on-road environment, onset flow turbulence, unsteady aerodynamics, fundamental flow structures, new test methods and facilities, new applications of computational fluid dynamics simulation, competition vehicle aerodynamics.

High Performance Laser Sintering Process for Thermoplastic Parts for Aerospace Applications

This specification will establish the critical controls and requirements for the production of reliable, repeatable, reproducible aerospace parts by Laser Sintering fabrication but is not limited to such application. This procedure will establish guidelines that users shall follow to approve new machines, processes, and materials. Specifically, this specification covers the configuration of the machine, operating software, machine calibration, machine and build parameters, and testing methodology required to create high performance aerospace parts. This specification also outlines the user’s responsibility for following the established guidelines and documentation requirements

Material for High Performance Laser Sintering

This specification will establish the minimum requirements for Laser Sintering feedstock to be used in conjunction with the Laser Sintering process specification for fabricating LS parts. The Laser Sintering part (with/without subsequent processing) may be used for, but not limited to, aerospace applications. This specification outlines the minimum technical and documentation requirements for Laser Sintering materials.

Condition Based Maintenance (CBM) Recommended Practices

The scope of this document is to clearly lay out the path for an organization to implement a CBM approach to maintenance. The practices will include both CBM in design and in the support phase for fielded equipment.

A Current Assessment of Combining Distortion Types

This document will address techniques or methods that have been used within the industry to address the problem of engine stability margin accounting when combinations of distortion types exist in an aircraft installation. Its focus is combining temperature, planar wave, and swirl distortion with time-variant spatial total pressure distortion. Example methodologies will be presented along with example cases where co-existing distortions have been evaluated. It will also address the areas where the industries' knowledge base is lacking (experimental data or computational methods) and the future work that is needed for methodology development in these areas. This document is viewed to be updated every five years as more information (data either experimentally or analytically) becomes available.

Inconel 718 L-PBF Material specification

Inconel 718 L-PBF Material specification - Use SDM 718 tensile data (SR+HIP+SA per API 6A718) - T99 (sample size 90 room temperature cylindrical ASTM E8 tensile results from a total of 9 builds evenly divided between EOS machines M400, M280 and M290) - Data analysis performed by Battelle - UTS 198 ksi / YS 157 ksi / E- 19%

Compatibility of Turbine Lubricating Oils

This method is used for determining the compatibility of a candidate lubricant with specific reference lubricants. The reference lubricants will typically be mandated by the product specification against which the candidate lubricant is being compared. This method is based on Federal Standard 791 method 3403 and Defence Standard 05-50 (Part 61) method 24, incorporating the modifications called for in SAE AS5780.

Insight: Fuel Effiency: Fuel Economy Testing (DVD)

"Spotlight on Design: Insight" features an in-depth look at the latest technology breakthroughs impacting mobility. Viewers are virtually taken to labs and research centers to learn how design engineers are enhancing product performance/reliability, reducing cost, improving quality, safety or environmental impact, and achieving regulatory compliance. As global concerns about the negative consequences of greenhouse gases on the environment increase, regulatory agencies around the world are taking serious steps to address the issue of tailpipe emissions In the episode "Fuel Efficiency: Fuel Economy Testing" (12:01), engineers at the EPA’s National Vehicle and Fuel Emissions Laboratory demonstrate how different vehicles are tested for emissions, and AVL’s technical team shows how accurate tailpipe emissions can be measured and reported.

Multi-Dimensional Engine Modeling, 2017

This collection covers advances in the development and application of models and tools involved in multi-dimensional engine modeling: advances in chemical kinetics, combustion and spray modeling, turbulence, heat transfer, mesh generation, and approaches targeting improved computational efficiency. Papers employing multi-dimensional modeling to gain a deeper understanding of processes related to turbulent transport, transient phenomena, and chemically reacting, two-phase flows are included in this collection.
Technical Paper

Application of Shape Memory Heat Engines to Improving Vehicle Fuel Economy

Shape memory materials undergo temperature-induced martensitic phase transformations that involve reversible dimensional changes. In performing these changes in shape, the shape-memory material is able to do work against external constraints, and this is the basis for shape-memory low-temperature heat engines. The transformation temperatures on heating and cooling are often not very different (little hysteresis) and are well defined and reproducible. Furthermore, these temperatures can be adjusted by varying the composition of the shape memory alloy. Internal combustion engines dissipate approximately two-thirds of the fuel energy as heat to the exhaust and coolant systems. A low-temperature heat engine could convert a fraction of this heat energy to useful work. This paper discusses the conceptual basis for the application of shape memory heat engines to internal combustion engine powered vehicles. Metallurgical and thermodynamic factors are discussed, as well as engine efficiency.