Viewing 1 to 30 of 2183
Technical Paper
Houshun Zhang, L. James Sanchez, Matthew Spears, Jayant Sarlashkar, Dennis Robertson, Michael Ross
In June of 2015 the Environmental Protection Agency and the National Highway Traffic Safety Administration issued a Notice of Proposal Rulemaking to further reduce greenhouse gas emissions and improve the fuel efficiency of medium- and heavy-duty vehicles. The agencies proposed that vehicle manufacturers would certify vehicles to the standards by using the agencies’ Greenhouse Gas Emission Model (GEM). The agencies also proposed a steady-state engine test procedure for generating GEM inputs to represent the vehicle’s engine performance. In the proposal the agencies also requested comment on an alternative engine test procedure, the details of which were published in two separate 2015 SAE Technical Papers1,2. As an alternative to the proposed steady-state engine test procedure, these papers presented a cycle-average test procedure. The papers also explored how a range of vehicle configurations could be defined and selected for generating the engine duty cycles for this test procedure.
Technical Paper
Jia Zeng, Zhenjie Shu, Shan Zhu
Interest in civil unmanned aircraft system (UAS) is growing worldwide, as it has the potential to create new applications and markets in civil domains. As the related technologies, including micro-electronics, composite structure, autonomous control, green energy, has been seen a rapid development, various types of UAS are constantly emerging following the expansion of functions and applications. Thus, there is a need for classified management supervision and certification for UAS. Considering the lacking of standardization for UAV category and classification, it is extremely urgent to raise a proper standard to classify and categorize UAS.
Technical Paper
David B. Antanaitis
The strong focus on reducing brake drag, driven by a historic ramp-up in global fuel economy and carbon emissions standards, has lead to renewed research on brake caliper drag behaviors and how to measure it. However, with the increased knowledge of the range of drag behaviors that a caliper can exhibit comes a particularly vexing problem – how should this complex range of behaviors be represented in the overall road load of the vehicle? What conditions are encountered during coastdown and fuel economy testing, and how should brake drag be measured and represented in this conditions? With the Environmental Protection Agency (amongst other regulating agencies around the world) conducting audit testing, and the requirement that published road load values be repeatable within a specified range during these audits, the importance of answering these questions accurately is elevated. This paper studies these questions, and even offers some methodologies for addressing them.
This Standard is applicable to suppliers of electronic components, assemblies, equipment and related materials. This standard establishes the general requirements to achieve a certified process. The use of this standard is intended for any manufacturing or service company whose goal is to achieve customer satisfaction through continuous improvement.
WIP Standard
This document is applicable to military aircraft where stakeholders are seeking guidance on the development and approval of Structural Health Monitoring (SHM) technologies and on the integration of these technologies into encompassing maintenance and operational support systems. The document will refer to those guidelines prepared under SAE ARP6461 that are relevant and applicable to military applications.
WIP Standard
This Aerospace Recommended Practice (ARP) was created to help industry deal with existing barriers to the successful implementation of Integrated Vehicle Health Management (IVHM) technology in the aerospace and automotive sectors. That is,given the common barriers that exist, this ARP can be applied not only to aerospace but also to the automotive, commercial and military vehicle sectors. Original Equipment Manufacturers (OEMs) in all of these sectors are heavily dependant upon a large number of component suppliers in order to design and build their products. The advent of IVHM technology has accentuated the need for improved coordination and communication between the OEM and its suppliers –to ensure that suppliers design health ready capabilities into their particular components.
WIP Standard
This document has been declared "CANCELLED" by the E32 committee as of April 2016 and has been superseded by ARP5120. By this action, this document will remain listed in the Numerical Section of the Aerospace Standards Index noting that it is superseded by ARP5120. Cancelled specifications are available from SAE.
WIP Standard
In order to realize the benefits of Integrated Vehicle Health Management (IVHM) within the aerospace and defense industry there is a need to address five critical elements of data interoperability within and across the aircraft maintenance ecosystem, namely • Approach • Trust • Context • Value • Security In Integrated Vehicle Health Management (IVHM) data interoperability is the ability of different authorized components, systems, IT, software, applications and organizations to securely communicate, exchange data, interpret data, use the information and derive consistent insight from the data that has been exchanged to derive value.
WIP Standard
No scope available.
This standard defines a system for the qualification of standard products for aviation, space, and defense applications. It defines the principles that shall be adhered to when carrying out product qualification; applied in conjunction with the rules and procedures of the CA. The system enables the CA to confirm compliance is achieved and maintained, in accordance with the requirements of its product definition and associated controlling technical specifications by an Original Component Manufacturer (OCM) of standard products. This standard requires an OCM that has been granted product qualification approval to ensure applicable approvals are maintained and renewed in accordance with the CA’s quality system for that qualified product. OCMs and OCM designated Value Added Distributors (VADs) requesting product qualification to this standard, shall as a prerequisite, maintain 9100 standard quality management system certification approval.
Journal Article
Huafeng Yu, Chung-Wei Lin, BaekGyu Kim
Abstract Modern vehicles can have millions of lines of software, for vehicle control, infotainment, etc. The correctness and quality of the software play a key role in the safety of whole vehicles. In order to assure the safety, engineers give an effort to prove correctness of individual subsystems or their integration using testing or verification methods. One needs to eventually certify that the developed vehicle as a whole is indeed safe using the artifacts and evidences produced throughout the development cycle. Such a certification process helps to increase the safety confidence of the developed software and reduce OEM’s liability. However, software certification in automotive domain is not yet well established, compared to other safety-critical domains, such as avionics and medical devices. At the same time, safety-relevant standards and techniques, including ISO 26262 and assurance cases, have been well adopted.
WIP Standard
Establish a design standard for the High-Beam, All-Metal Self-Locking Hexagon Nuts that are used on the T-Bolts that tighten V-Band Couplings, band clamps and strap assemblies. This standard to include: drawing, dimensions, materials, manufacturing processes, and part number code system.
WIP Standard
Establish a general specification for the High-Beam, All-Metal Self-Locking Hexagon Nuts that are used on the T-Bolts that tighten V-Band Couplings, band clamps and strap assemblies
WIP Standard
The scope of this document will consider a broader range of contaminants than ARP4418. In addition, it may provide guidance for measuring on wing, as well as in test cells, Finally, it may also discuss transient measurements, as well as steady state measurements.
WIP Standard
This Aerospace Standard (AS) defines the requirements for a heavy braid polytetrafluoroethylene (PTFE) lined, metallic reinforced, hose assembly suitable for use in high temperature, 400 °F, high pressure, 3000 psi, aircraft hydraulic fluid systems, also for use in pneumatic systems which allow some gaseous diffusion through the PTFE wall. The -20 size operating temperature is limited to 275 °F maximum.
WIP Standard
This Aerospace Standard (AS) defines the requirements for a heavy duty polytetrafluoroethylene (PTFE) lined, metallic reinforced, hose assembly suitable for use in high temperature, high pressure, 4000 psi, aircraft and missle hydraulic fluid systems.
WIP Standard
This SAE Aerospace Standard (AS) defines the requirements for a convoluted polytetrafluoroethylene (PTFE) lined, metallic reinforced, hose assembly suitable for use in aircraft fluid systems at temperatures of -65 to 400 °F and at operating pressures per Table 1.
WIP Standard
This specification covers three types of lightweight, low pressure, wire and/or fabric reinforced hose assemblies primarily for use in aircraft potable water systems.
WIP Standard
This document defines the requirements for polytetrafluoroethylene (PTFE) lined, metallic braid reinforced, hose assembly suitable for use in 400 °F (204 °C), 5080 psi (35 000 kPa) aircraft hydraulic systems.
Viewing 1 to 30 of 2183