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Viewing 1 to 30 of 17327
2017-06-05
Technical Paper
2017-01-1889
Todd Tousignant, Kiran Govindswamy, Georg Eisele, Christoph Steffens, Dean Tomazic
Abstract The automotive industry continues to develop new powertrain and vehicle technologies aimed at reducing overall vehicle-level fuel consumption. Specifically, the use of electrified propulsion systems is expected to play an increasingly important role in helping OEM’s meet fleet CO2 reduction targets for 2025 and beyond. Electric and hybrid electric vehicles do not typically utilize IC engines for low-speed operation. Under these low-speed operating conditions, the vehicles are much quieter than conventional IC engine-powered vehicles, making their approach difficult to detect by pedestrians. To mitigate this safety concern, many manufacturers have synthesized noise (using exterior speakers) to increase detection distance. Further, the US National Highway Traffic Safety Administration (NHTSA) has provided recommendations pursuant to the Pedestrian Safety Enhancement Act (PSEA) of 2010 for such exterior noise signatures to ensure detectability.
2017-06-05
Journal Article
2017-01-1762
Michael Roan, M. Lucas Neurauter, Douglas Moore, Dan Glaser
Abstract Hybrid and electric vehicles (HVs and EVs) have demonstrated low noise levels relative to their Internal Combustion Engine (ICE) counterparts, particularly at low speeds. As the number of HVs/EVs on the road increases, so does the need for data quantifying auditory detectability by pedestrians; in particular, those who are vision impaired. Manufacturers have started implementing additive noise solutions designed to increase vehicle detectability while in electric mode and/or when traveling below a certain speed. A detailed description of the real-time acoustic measurement system, the corresponding vehicular data, development of an immersive noise field, and experimental methods pertaining to a recent evaluation of candidate vehicles is provided herein. Listener testing was completed by 24 legally blind test subjects for four vehicle types: an EV and HV with different additive noise approaches, an EV with no additive noise, and a traditional ICE vehicle.
2017-06-05
Technical Paper
2017-01-1778
Enrico Galvagno, Antonio Tota, Mauro Velardocchia, Alessandro Vigliani
Abstract This paper explores the potentiality of reducing noise and vibration of a vehicle transmission thanks to powertrain control integration with active braking. Due to external disturbances, coming from the driver, e.g. during tip-in / tip-out maneuvers, or from the road, e.g. crossing a speed bump or driving on a rough road, the torsional backlashes between transmission rotating components (gears, synchronizers, splines, CV joints), may lead to NVH issues known as clonk. This study initially focuses on the positive effect on transmission NVH performance of a concurrent application of a braking torque at the driving wheels and of an engine torque increase during these maneuvers; then a powertrain/brake integrated control strategy is proposed. The braking system is activated in advance with respect to the perturbation and it is deactivated immediately after to minimize losses.
CURRENT
2017-05-26
Standard
AS21925D
SCOPE IS UNAVAILABLE.
2017-05-25
WIP Standard
ARP1107C
This recommended practice covers the fixed structure, or independent energy absorbing system affixed to the airframe to afford protection to the control surfaces, engine and other portions during ground handling, take-off and landing.
CURRENT
2017-05-25
Standard
AIR805D
The purpose of this information report is to present the factors that affect the design and development of aircraft jet blast windshield rain removal systems. Rain removal system design will generally be unique to specific aircraft. Design of these systems typically requires a preliminary design for the system based on available empirical data to be followed with a laboratory development program and a flight test validation program. Published windshield rain removal performance test data is available only for limited windshield configurations.
CURRENT
2017-05-25
Standard
AS1043G
SCOPE IS UNAVAILABLE.
CURRENT
2017-05-24
Standard
AIR5742A
The scope of this document is related to the particular needs of oxygen equipment with regards to packaging and transportation. The document provides guidance for handling chemical, gaseous and liquid oxygen equipment. It summarizes national and international regulations to be taken into account for transportation on land, sea and air and provides information on classification of hazardous material. The aim of this document is to summarize information on packaging and transportation of oxygen equipment. Statements and references to regulations cited herein are for information only and should not be considered as interpretation of a law. Processes to maintain cleanliness of components and subassemblies during processing and assembly or storage of work-in-progress are outside the scope of this document. Guidance on this can be obtained from ARP1176.
CURRENT
2017-05-19
Standard
J2591_201705
This SAE Recommended Practice applies to motor vehicle Forward Illumination Devices which incorporate limited adaptive beam pattern capabilities. This document is to be used in conjunction with other forward lighting standards and/or recommended practices which define the base beam procedures, requirements, and guidelines.
CURRENT
2017-05-19
Standard
AIR1059E
This document provides guidance concerning the maintenance and serviceability of oxygen cylinders beginning with the quality of oxygen that is required, supplemental oxygen information, handling and cleaning procedures, transfilling and marking of serviced oxygen assemblies. This document attempts to outline in a logical sequence oxygen quality, serviceability, and maintenance of oxygen cylinders. Content of this document can also be used for refilling of oxygen cylinder while installed on aircraft, directly or through an intermediate charging port.
2017-05-18
WIP Standard
AS85720B
This specification covers the design requirements and test procedures for separable beam seal fittings which include end fittings (see 2.4.2), connectors (see 2.4.3), and boss fittings for use in aerospace fluid systems. Design requirements are for Class 5000 and 8000 in titanium, and corrosion resistant steel (CRES). Definition of fittings and related terms are defined in 2.4.
2017-05-12
WIP Standard
AS5235C
To Stabilize AS5235B – issued 1997-10, revised twice (2006-05 for Figure 1 ‘R’ dimension tolerance change, added cad warning note, material and finish spec updates, ovality note change, and ARP4296 to AS4296; 2009-10 for procurement spec change from AS4444 to AS18280, add ‘C’ material code, heat treat changes, and added intended usage note. No other changes since 2009-10.
2017-05-12
WIP Standard
AS897E
To Stabilize AS897D – issued 1-15-76 per MIL-F-18280 for O2 and GSE only; revised 4 times (12-1-83 to add O2 cleaning requirement and part id note, 1995-12 to reformat to SAE template and revised title, 2008-03 to add cad note, change proc spec to AS4842/2 and associated QML requirements, update matl inactive/can'd specs to active ones, revised wrench flat tolerances, and inactivated 'D' matl for new design, 2009-11 to update to current SAE template along with Table updates and add 'D' inactive effectivity date; reaffirmed twice; April 1983 & 2007-08. No other significant changes to the standard.
2017-05-12
WIP Standard
AS893E
To Stabilize AS893D – issued 1-15-76 per MIL-F-18280 for O2 and GSE only; revised 4 times (12-1-83 to add O2 cleaning requirement and part id note, 1995-12 to reformat to SAE template and revised title, 2008-03 to add cad note, change proc spec to AS4842/2 and associated QML requirements, update matl inactive/can'd specs to active ones, revised wrench flat tolerances, and inactivated 'D' matl for new design, 2009-11 to update to current SAE template along with Table updates and add 'D' inactive effectivity date; reaffirmed twice; April 1983 & 2007-08. No other significant changes to the standard.
2017-05-11
WIP Standard
AS6369/1
This is the coupling design standard for the new AS6369 specification.
2017-05-11
WIP Standard
AS6369/2
This is the sheet metal flange design standard for the new AS6369 specification.
2017-05-11
WIP Standard
AS6369/3
This is the solid flange design standard for the new AS6369 specification.
2017-05-11
WIP Standard
J3144
Scope is to develop clearance zones and recommended design principles for use of capless designs for filler pipe design for fuel systems
CURRENT
2017-05-09
Standard
ARP5297B
This SAE Aerospace Recommended Practice (ARP) provides the qualification test procedure requirements for low wattage halogen lamps (less than 35 watts) intended for use primarily in aircraft applications. The purpose of these tests is to provide a laboratory means of determining the performance characteristics of lamps under airplane power and other environmental conditions and to verify the integrity of the lamp design and production processes.
CURRENT
2017-05-09
Standard
ARP4058B
This SAE Aerospace Recommended Practice (ARP) provides a guide for preparation of requirements for general design, performance, and testing of mechanical geared rotary actuators intended to be used for applications requiring motion control in response to manual or automatic power control system inputs.
2017-05-09
WIP Standard
J2042
This SAE Standard provides test procedures, requirements, and guidelines for clearance, sidemarker, and identification lamps intended for use on vehicles 2032 mm or more in overall width. A clearance lamp, sidemarker lamp, or an identification lamp conforming to the requirements of this document may be used on vehicles less than 2032 mm in overall width.
2017-05-08
Article
Many autonomous driving plans call for deploying a handful of solid state Lidar sensors on each vehicle, but the Lidar modules used on today’s prototype vehicles are all mechanical systems with moving parts. That’s prompted huge interest in solid-state Lidar, with OEMs and suppliers racing to invest in non-mechanical technologies.
2017-05-08
Article
Artificial intelligence has the potential to vastly advance automated driving and other aspects of automotive safety. But developers must determine how to mitigate undesirable side-effects.
CURRENT
2017-05-08
Standard
AS5385D
1.1 This SAE Aerospace Standard (AS) aims at identifying the design criteria and testing methods adequate to guarantee the ultimate load and operational dependability of cargo restraint strap assemblies with a typical 22250 N (5000 lbf) rated ultimate tension load capability, as used by the airline industry in order to restrain cargo on board civil transport aircraft during flight:
CURRENT
2017-05-08
Standard
AIR6211A
This test method provides stakeholders (runway deicing chemical manufacturers, users, regulators, and airport authorities) with a relative ice penetration capacity of runway deicing/anti-icing chemicals, by measuring the ice penetration as a function of time. Such runway deicing/anti-icing chemicals are often also used on taxiways and other paved areas. This test method does not quantitatively measure the theoretical or extended time of ice penetration capability of ready-to-use runway deicing/anti-icing chemicals in liquid or solid form.
2017-05-05
Magazine
Alternative fuels and challenges Automotive powertrain development: virtually-connected hardware co-simulation Functional Safety-progressing towards safer mobility Electric rockets and the future of satellite propulsion Achates powers toward production A potential ICE game-changer, the Achates OP engine is being tooled up for production at one OEM while a new 2.7-L triple for light-truck demonstrations enters the build phase. Engineering with simulation and data Companies are discovering new simulation techniques, especially optimization; the next step is to combine simulation with sensor data and predictive analytics to create even more robust off-highway equipment.
2017-05-04
WIP Standard
AS931C
Propose revision to add conductive high purity aluminum coating per MIL-DTL-83488 for al alloy fittings.
2017-05-04
WIP Standard
AS103C
Propose revision to add conductive high purity aluminum coating per MIL-DTL-83488 for aluminum alloy fittings. The W code aluminum parts with new finish will be distinguished by new finish code V at the end of part number.
Viewing 1 to 30 of 17327

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