Refine Your Search

Topic

Author

Affiliation

Search Results

Standard

Nomenclature & Definitions for Electrified Propulsion Aircraft

2019-02-28
WIP
ARP8676
Create and publish a list of terms relevant to electrified propulsion aircraft with summary text descriptions. The terms and description will not provide full explanations, diagrams, and other detailed technical descriptions. These deeper descriptions will be addressed in other documents.
Magazine

Automotive Engineering: June 2018

2018-06-01
Underway on nuclear power Ford Motor Co. CTO Dr. Ken Washington is driving new approaches to technology innovation—from inside and outside the enterprise. Silicon drives autonomy movement Renesas’ Amrit Vivekanand explains how the software and semiconductors that underlie the industry’s rapid transition are rapidly evolving. Automotive propulsion ‘On a journey’ CTO Jeff Hemphill explains how Schaeffler Group is blending its longstanding mechanical-systems expertise with critical investment in electrification and autonomy. Steeling for reduced mass and higher strength New 3rd-generation AHSS and steel-polymer hybrid tech aim to cut mass by up to 30%—and take a bite out of aluminum’s business. Balancing the rumble and roar Multiphysics simulation is part of the development toolset at Mahindra Two Wheelers, as the Indian motorcycle and scooter maker expands into global markets with larger bikes. Le Mans 2018: can anyone beat Toyota’s hybrids?
Standard

Safety Considerations for Electrified Propulsion Aircraft

2019-04-02
WIP
ARP8677
This SAE Aerospace Recommended Practice (ARP) discusses particularities to be considered when performing the safety assessment of electrified propulsion aircraft. Its main focuses are: • The failure modes of electrified propulsion components • Methods to evaluate failure rates of electrified propulsion components • Effects of failures on example electrified propulsion system and aircraft architectures • Particular risks, common causes, and zonal considerations specific to electrified propulsion The guidance in this document may be used to generate inputs for system and aircraft safety assessment activities.
Standard

Architecture Examples for Electrified Propulsion Aircraft

2019-05-07
WIP
AIR8678
The application of electric power for aircraft propulsion can take a variety of forms, ranging from partial electric to full electric. The introduction of electric motors to drive propulsors, along with the variety of available methods to generate electricity and store energy offers great degree of new design freedom for new aircraft and aircraft architectures. This newfound design freedom exposes a need within the aviation industry to establish a common design language for electrified propulsion. While this need for a common design language is recognized, the intent of this document is to encourage innovation, providing reference architectures as a launching point for future work in this area. This document will categorize potential electrified propulsion architectures and provide examples.
Standard

Electric Drivetrain Fluids (EDF)

2019-04-24
WIP
J3200
This SAE Information Report is to assist those concerned with lubricants used in drivetrain components powered by electric powerplants. The information contained herein will be helpful in understanding the terms related to the properties of a lubricant used in electric drivetrains.
Standard

Compatibility of Turbine Lubricating Oils

2019-07-16
WIP
ARP7120
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.
Technical Paper

Surface Treatments and Characterization of Electroplated and Hot Dip Galvanized Steel Sheets

1996-04-01
91A126
Protection of surfaces is a critical factor in determining the extended service life of a structure in polluted and aggressive environments. In particular, a rapid growth of the technology for the protecting coating of cold rolled steel is experienced, for the use in transport, electric housewares, building and industrial plants. Numerous changes have taken place in the production of zinc coatings on steel in order to improve the corrosion resistance using zinc alloy platings. Our research group collected from the international production a number of selected galvanized steel samples, including electrodeposited zinc alloys, multilayer coatings, hot dip galvanized steels. On the selected materials we established and analyzed morphology, composition, crystal structure, impurity content and distribution, using many surface microanalysis techniques.
Technical Paper

Recycling Automobiles: a Problem of Environment and Resources

1996-04-01
91A130
The socio-economic system is coming to the conclusion that the environment will no longer tolerate and absorb all of man's interventions, and that natural resources no longer constitute a cheap and inexhaustible source of wealth. In this scenario of the limits of nature and ever-increasing environmental costs, we are faced with the problem of recovering and reusing the materials which go into the manufacture of an automobile. The replacement of metal materials with polymer materials leads to a reduction in the re-usable waste, and to an increase in the amount of waste with no economic value, or even with a negative economic value. The use of the non-ferrous and non-aluminous materials in an automobile is beyond the capabilities of new techniques for scrapping automobiles, which means that at the end of their lives, the automobiles must be disassembled, sorted on the basis of the constitute materials, recovered and recycled.
Technical Paper

Application of Shape Memory Heat Engines to Improving Vehicle Fuel Economy

1996-04-01
91A128
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.
Technical Paper

State of the Art in the Use of Stainless Steel for Bus and Car Parts Manufacture

1996-04-01
91A127
The paper describes recent developments in the use of stainless steel to make the parts of buses which are most liable to corrosion. Sheet metal is used for the outer panelling, and square and rectangular tubes for the body. The types of steel used and their fabrication are analyzed. Finally, a brief description is given of the stainless steels used to make car exhaust systems.
Technical Paper

Simulors, An Innovative Tool for Molds Development

1996-04-01
91A117
Mold designers and foundrymen spend a lot of time in developing molds without knowing exactly the phenomena which take place inside. Simulor, which has been used in an industrial environment for two years, offers the solution to make foundrymen understand what happens during the filling of the mold and the solidification of the part. Based on navier-stokes and heat transfer equations, simulor provides speed distribution and metal front evolution in the cavity and thermal map in the mold and the part. Some examples with different metals (cast iron, aluminum alloy) cast with various processes (sand or die casting, low pressure or gravity casting) will be given. This new tool will given foundrymen the opportunity to test the mold before having it machined and will also allow reduction in development delays.
Technical Paper

Integration and Validation of Sheet Metal Forming Simulation Computer Programs Into the Design Process

1996-04-01
91A121
In order to improve the design of drawn parts and to reduce the number of trial and error tests, Renault has undertaken the development and the validation of various finite element procedures and codes. This paper describes the function of each software and its level of integration into the design process. One of them is already an operational tool used be planners whilst the others are still in the validation phase. Selected examples show typical applications of the computer programs on automotive parts.
Technical Paper

Particulate Reinforced Aluminum Matrix Composites Obtained By Indirect Squeeze-Casting

1996-04-01
91A115
Indirect squeeze casting technology is one of the most attractive fabrication techniques of near net shape components constituted by aluminum matrix composite (AMC) materials. AMCs reinforced with both continuous and discontinuous ceramic elements have been mainly produced by infiltration of porous preforms. Nevertheless, a further promising production route offered by this technique is given by the possibility to employ ingots of pre-reinforced aluminum alloys containing ceramic particles (silicon carbide or alumina); ingots are remelted and, under suitable operative conditions, high quality composite castings of simple and complex shape are produced by squeeze casting. The present paper describes the results of an extensive experimental work carried out by Alures-Centro Tecnico Porcessi on a pilot plant scale employing a vertical squeeze casting machine with a clamping force of 315 tons.
Technical Paper

Implications of Future Scrap Car Handling for Design of Cars

1996-04-01
91A124
In this paper the socio-economic and technical problems of the handling of car wrecks are discussed. The recovery of metals as a goal for shredder operations will increasingly be supplemented with the recovery of other materials such as polymers. In order to deal economically and technically with polymer materials, it is necessary to know in advance which type of wreck handling will be used. Also optimization of shredder operations allow less freedom to incorporate a variety of materials when compared with selective dismantling or disassemble of cars. It is argued that various technical solutions have to be accompanied by increased cooperation along the firms that are connected to the handling of car wrecks. Cooperation between the scrap context and designers is essential, in order to optimize dismantling practices according to criteria of environmentally preferred solutions.
Technical Paper

Critical Compression Loads on Aluminum Honeycomb Panels

1996-04-01
91A131
The purely theoretical evaluation of critical compression loads seems complex and not very reliable in the case of honeycomb panels, on account of the numerous parameters in play and their complex interrelationships. This report provides the designer with a fast tool for preliminary calculations, consisting of a finite-element mathematical model with elastic-linear code (which can be processed using a PC), which makes it possible to obtain information very closely resembling the real situation.
Technical Paper

Microarc Oxidization Process--A Perspective Technology Used for the Obtention of Qualitative Ceramic Coatings

1996-04-01
91A108
A perspective microarc oxidization (MAO) technology used for the obtention of ceramic coatings is described. The coat formation mechanism and its phase composition and revealed conformably to aluminum alloys. The results of the analysis of MAO-coatings are given by their cohesive strength with respect to the substrate and microhardness distribution within ceramic layer thickness. The examples of practical use of coatings are given and possible perspectives of MAO-technology inculcation are outlined.
X