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Viewing 121 to 150 of 3442
2014-10-30
Standard
AS9116
The aviation, space, and defense industries rely on the development and manufacture of complex products comprised of multiple systems, subsystems, and components each designed by individual designers (design activities) at various levels within the supply chain. Each design activity controls various aspects of the configuration and specifications related to the product. When a change to design information is requested or required, the change has to be evaluated against the impacts to the higher-level system. Proposed changes to design information that the design activity identifies to be minor and have no effect on their product requirements or specifications have the potential to be concurrently implemented and approved, where authorized to do so. Changes that affect customer mandated requirements or specifications shall be approved prior to implementation.
2014-10-29
Article
NASA and Aerojet Rocketdyne have successfully completed a series of hot-fire tests on an advanced rocket-engine thrust chamber assembly using copper alloy additive manufacturing technology. Full-scale demonstration is the next step in the technology’s development path.
2014-10-29
WIP Standard
AS9162
This document identifies the basic elements and provides a standard for structuring operator self-verification programs within the aviation, space, and defense industry for producers of commercial and military aircraft and weapons platforms, space vehicles, and all related hardware, software, electronics, engines, and composite components.
2014-10-22
Book
The new Bosch Automotive Handbook , now in its 9th English edition, has been completely revised and enhanced to include the most recent developments in automotive technology. About 200 specialist authors contributed to this new version of every engineer’s must-have reference. The book's format has been revised: it is now 20 percent longer and wider, as this allows for a larger font size. This makes the texts and graphics easier to read. The index has been strongly expanded to make looking up technical terms easier. The Bosch Automotive Handbook is a best-seller, with a broad global readership. Students of engineering programs consult it, as do researchers and engineers in the automotive industry. Mechanics who are studying to become master craftsmen also use it as a reference work. Experts trust the well-founded and extensive expertise that can be found in the classic. The Bosch Automotive Handbook is widely regarded around the world as a standard work for automotive technology.
2014-10-20
Article
Meeting the cleanest emissions regulations ever with the phase-in of the Tier 4 Final and Stage IV imposed a new way to design and calibrate off-highway engines.
2014-10-20
Article
GP:50 Corporation LTD’s Model 188/288/388 miniature flush diaphragm pressure transducer series’ unique flush diaphragm design makes possible accurate pressure measurements of high-viscosity fluids, even within high shock and vibration environments, without port plugging and clogging.
2014-10-20
WIP Standard
AS13004
Process Flow Description, PFMEA and Control Plans
2014-10-17
Article
Supercritical Fluid Technologies’ bench top supercritical fluid extractor, the model SFT-110, provides an alternative to traditional extraction methods that use organic solvents.
2014-10-17
Article
W. L. Gore & Associates is expanding its family of high-speed data cables for the aerospace industry to meet the industry’s challenges to improve pilot communication and passenger in-flight entertainment while reducing downtime for maintenance and decreasing operating costs.
2014-10-17
Article
The OM-WLS-TEMP series wireless USB 2.0 full-speed temperature input module from Omega is fully compatible with both USB 1.1 and 2.0.
2014-10-17
Article
WITT-Gasetechnik’s dome-loaded pressure regulator is impervious to system pressure and withdrawal fluctuations.
2014-10-17
WIP Standard
AMS2771F
This specification covers the engineering requirements for heat treatment of aluminum alloy castings and for parts machined from castings.
2014-10-16
WIP Standard
AMS2630D
This specification covers procedures for ultrasonic inspection, by pulse-echo procedures, of flat, rectangular, round, cylindrical, and contoured products having a thickness or cross-sectional dimension greater than 0.50 inch (12.7 mm), using either contact or immersion methods, and using the longitudinal-wave or shear-wave modes or combinations of the two, as necessary. This specification may apply to testing finished machined parts provided the parts can meet the basic testability requirements, such as size, contour, metallurgical structure, and thickness.
2014-10-13
Article
Researchers at VE Commercial Vehicles Ltd. in India employed downsizing to design a commercial vehicle exhaust system using the ANSYS CFD tool Fluent, resulting in a 14.1% reductions in both size and volume and a mass savings of 2%.
2014-10-13
Technical Paper
2014-01-2707
Brian C. Kaul, Benjamin J. Lawler, Charles E.A. Finney, Michelle L. Edwards, Robert M. Wagner
Abstract Advances in engine controls and sensor technology are making advanced, direct, high-speed control of engine combustion more feasible. Control of combustion rate and phasing in low-temperature combustion regimes and active control of cyclic variability in dilute SI combustion are being pursued in laboratory environments with high-quality data acquisition systems, using metrics calculated from in-cylinder pressure. In order to implement these advanced combustion controls in production, lower-quality data will need to be tolerated even if indicated pressure sensors become available. This paper examines the effects of several data quality issues, including phase shifting (incorrect TDC location), reduced data resolution, pressure pegging errors, and random noise on calculated combustion metrics that are used for control feedback.
2014-10-02
Article
The U. S Department of Transportation/NHTSA Vehicle Research and Test Center has commissioned dSPACE to supply an in-lab GPS simulation system. GPS simulation is used in the development and testing of numerous intelligent driving and traffic systems, including collision avoidance, advanced driver-assistance systems, navigation, and V2X communications.
2014-10-01
Standard
CMB6_2
This training program is designed to introduce and examine the principles of Configuration and Data Management. The program will present an overview of the origin and evoluation of Configuration/Data Management and define the elements of identification, control, status accounting, audits and data requirements, tracking and monitoring. This program will also explore the relationship between Configuration/Data Management and other organizations/elements and their involvement in the system life cycle.
2014-10-01
Standard
CMB6_5
This text will cover the details of the status accounting function. Identification, audits, and control are covered in other textbooks. It is the intent of the authors that this status accounting text will serve a broad general population of managers engaged in development, manufacturing, and distribution of both commerical and military items. The figures in this text provide illustrations of sample data which might be required and sample formats that might be used by your organization in accomplishing status accounting. You will have to make the decisions about the exact content and format appropriate for your project and/or facility based on the information contained in this text.
2014-10-01
Standard
CMB6_6
The objective of this course is to provide an in-depth understanding of the concepts and principles involved in the Review and Configuration Audit process. It is intended for an individual who has completed a basic introductory course in CM and who requires the deeper knowledge of a CM practitioner rather than a superficial overview. Technical review and product audit practices described in this text are based on Government requirements. This emphasis is made because the Department of Defense DOD) represents a major customer of goods and services and because the referenced specifications and standards reflect good business practices refined over many years of usage. For commercial companies producing items for other companies or the public, many of these reviews and audits may not be formally implemented. They are, however, an integral and essential part of the systems engineering process.
2014-10-01
Standard
CMB7_1
The scope of this bulletin is to provide guidance on the use of current and future technologies for the electronic interchange of CMS data. the purpose of this guide is to ensure requirements of CM (identificaiton, control, status accounting and audit) are used as the basis for transitioning to an automated environment.
2014-10-01
Standard
CMB7_3
the purpose of the Statement of Work is to define the Configuration Management requirements necessary to maintain and control CALS databases and provide transmission, access and receipt of digital data between contractors, subcontractors, vendors and the government. Digital data includes not only traditional configuration management documents such as specifications, drawings, and ECP's but includes all technical data listed in the CDRL. This Model SOW document will provide the government suggested SOW wording that should be included in RFP's and guidance in applying those SOW paragraphs.
2014-09-30
Article
The Model T261 series rotary transformer coupled torque sensors from SensorData Technologies meet the demanding in-line testing requirements of small motors, pumps, compressors, turbines, fans, and other fractional horsepower rated devices.
2014-09-30
WIP Standard
AS9145
APQP is a phased planning process applied to product introductions. Includes specific deliverables to ensure on-time, on-quality, on-cost objectives are met PPAP is an output of the APQP process. Requires Suppliers to demonstrate that they have established a production process that will consistently produce product meeting customers requirements Applies existing tools to ensure products are produced under controlled conditions with minimal variation.
2014-09-30
Technical Paper
2014-01-2430
Rajendra Vivekananda Hosamath, Muralidhar Nagarkatte
Abstract All top ranking automobile companies in the world believe in single word “Quality” and maintaining quality standards is a philosophy, a belief in which we live, a task which cannot be put aside for another day. To achieve the world class quality standards Divgi-Warner meticulously follows a highly effective tool known as Quality System Basics (QSB).QSB helps Divgi-Warner to preserve integrity of commitment to achieve manufacturing excellence. This case study covers the Quality System Basics implementation experience of Divgi-Warner Pvt. Ltd. (DWPL) India, a BorgWarner's plants located at Pune and Sirsi in India.
2014-09-30
Technical Paper
2014-01-2306
Mathialagan Balaji, Hemant Bhatkar, Jeya Kumar Ranjith Kumar, Ananthan Anbazhagan, Pramod Palkar
Abstract Rear axles are subjected to bending and torsion loads out of which Bending loads are predominant. In case of Off road vehicles Bi Axial- combination of Bending and torsion loads were predominant, because of axle construction and vehicle usage pattern. Defined test procedures are available for bending durability and torsional durability evaluation of axles. In this experiment, new test methodology was developed for Bi Axial durability evaluation of Off road vehicle rear axle with single servo hydraulic linear actuator. For creating Bi Axial load condition, we may need multiple actuators and complicated fixtures. Axle wheel end is constrained at an angle with suitable fixtures for creating the bending and torsional forces together in the axle. Servo hydraulic linear actuator with suitable loading arm is used for applying the test torque in the axle input flange.
2014-09-30
Technical Paper
2014-01-2297
Mehmet Bakir, Murat Siktas, Serter Atamer
Abstract In today's world, there are a prominent number of weight and cost reduction projects within the vehicle engineering development activities. Regarding this phenomenon, a complete optimization study is applied to a leaf spring assembly, which has 4 leaves and which is used in heavy duty trucks, by reducing the number of leaves down to 3 together with weight and cost reductions. At the first step of the project, the stiffness of the leaf spring is calculated with in-house software based on mathematical calculations using the thickness profile of the leaves. Then the results of these calculations are compared with non-linear elastic leaf spring calculations which are conducted with FEA. This elastic leaf spring finite element model is transferred into Multi-Body-Simulation (MBS) model in order to determine the forces acting on the leaf spring.
2014-09-30
Technical Paper
2014-01-2312
Venkatesan Chokkalingam, Mohan Rao
Abstract The durability of the components in a vehicle plays one of the major roles in its life cycle cost. The powertrain mount is one such component since its rubber characteristics have significant impact on the vehicle's NVH and fatigue life. This paper presents the enhanced durability benefits obtained by changing the polymer composition, manufacturing methods and design optimization of a powertrain mount for an off-road commercial vehicle. The methodology involved characterization[2] of the existing mount, arriving a new compound formulation, making of prototypes, experimental validation for durability[3] and repeatability in the laboratory combined with rigorous on field vehicle trials. NVH measurements were also carried out on the improved mounts. The above exhaustive exercise resulted in the development of a comprehensively far better mount than an existing mount with improved durability without compromise on NVH properties.
2014-09-30
Technical Paper
2014-36-0103
Demerson Alves de Campos
Abstract Over recent years, demands for fuel-efficient vehicles have increased with the rise of the fuel price and public concerns on environment. Recently, application of lightweight materials is increasing in the automobile industry in order to improve mass reduction and consequently fuel efficiency. On this particular study, with a goal of developing a Lightweight Fixed Steering Column, it was identified an opportunity to replace fixed steering column metallic upper and lower brackets by polymeric material. In order to fulfill NVH, Crash, Durability and Performance requirements, a DFSS methodology has been applied. As a result, It was achieved ∼51% of mass reduction, ∼10% of performance improvement with ∼14% of cost increase.
2014-09-30
Technical Paper
2014-36-0142
Luis Alberto Pargas Carmona
Abstract A vehicle is a product that encloses high levels of complexity. Assessing its quality requires taking into account several variables simultaneously. Usually, this kind of analysis is made over one variable at a time, ignoring the multidimensional nature of the quality. This is even more critical when two or more vehicles are included in the analysis (e.g. for benchmarking purposes), or when the aim of the analysis is to evaluate the performance of more than one variable over time. This study presents an overview of the biplot, which is a low-dimensional representation of observations and variables, and the possibility to use it in monitoring multiple quality variables.
2014-09-30
Technical Paper
2014-36-0174
Ygor Henrique de Almeida, Roberto Rossy Chaves, Fabrício Cardinali Rezende, Tiago Augusto Carneiro Calijorne, Juan Carlos Horta Gutiérrez
Abstract Currently the durability test of FIAT vehicles powertrain suspension system is performed in pattern roads that reproduces conditions which the vehicle is submitted by costumer during product life cycle. The test done in these roads is time consuming and expensive. Experimental Engineers, for quite some time, have endeavored in doing automotive components fatigue tests in the lab. These environments provide more controlled test conditions and enable a less time consuming test. This work analyzes, over one of the three powertrain system attachment points of a passenger vehicle, differences that are found between a test performed in pattern roads and a test performed in a 6DOF road simulator. As conclusion, presents alternatives to perform the test of these components in lab using a 6DOF road simulator.
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