Display:

Results

Viewing 241 to 270 of 22272
Standard
2013-12-02
This SAE Aerospace Recommended Practice (ARP) provides guidance for the design and installation of a commercial aircraft hydraulic system to meet the applicable requirements, including the applicable airworthiness regulations that affect the hydraulic system design. This ARP also provides information and guidelines on the many factors that arise in the design process to provide cost effectiveness, reliability, maintainability and accepted design and installation practices.
Technical Paper
2013-11-27
Puneet Arora, Anoop Bhat, Shailender Sharma, C Mukesh
Vehicles which are sold and put into service in a country have to meet the regulations and standards of that country. Every country has a separate regulation and approval procedure which requires expensive design modifications, additional tests and duplicating approvals. Thus, there is the need to harmonize the different national technical requirements for vehicles and form a unique international regulation. With this rationale, the World Forum for Harmonization of Vehicle Regulations of the United Nations Economic Commission for Europe (UN/ECE/WP29) has brought governments and automobile manufacturers together to work on a new harmonized test cycle and procedure which is to be adopted around the world. This lead to the development of Worldwide Harmonized Light Duty Test Procedures (WLTP) and Cycles (WLTC). The test procedure is divided into 3 cycles, depending on a power to mass ratio of the tested vehicle. Test cycles in WLTP are developed with an aim to represent typical driving conditions around the world.
Technical Paper
2013-11-27
Suchismita Chatterjee, Arun Sivasubrahmaniyan
In the recent years, due to rising fuel costs, transportation technologies that provide better fuel economy than conventional vehicle are gaining in popularity with masses. Also, tighter emission norms by various governments have prompted OEMs to look at alternate solutions such as hybrid vehicles. Hybrid vehicles employ an internal combustion engine as well as an alternate energy source to power road vehicles. Various types of hybrid vehicles are available such as mild hybrid, full hybrid, series, parallel and series-parallel hybrids. The level of hybridization (mild or full) and the different powertrain combination (series or parallel) result that on the same route, the engine in a hybrid vehicle operates very different to that of conventional vehicle. The fuel consumed and emissions are also significantly lower in hybrid vehicle. To certify hybrid vehicles, regulators in many countries have modified existing procedures applicable to conventional vehicles. This paper gives an overview about the types of hybrid Powertrain combination.
Standard
2013-11-26
This specification covers a trimethylol propane triheptanoate fluid (See 8.1) representative of gas turbine engine oils. This fluid has been used typically to evaluate the ability of elastomeric and other polymeric materials to conform to designated requirements after contact with, or immersion in, Mil-L-7808 and similar lubricants at specified time and temperature as required by the material specification, and its use is limited to such applications. This fluid is not intended for operational use in gas turbine engines (See 8.1).
Standard
2013-11-18
This SAE Aerospace Information Report (AIR) describes procedures, required continuous sampling conditions, and instrumentation for the measurement of non-volatile particle number and mass concentrations from the exhaust of aircraft gas turbine engines. Procedures are included to calculate sampling loss performance. This AIR is not intended for in-flight testing, nor does it apply to engine operating in the afterburning mode. This standard is sold as a collection of related documents. In addition to the PDF of AIR6241 itself, the collection includes 3 Excel files that can be used to calculate measurements and performance, 7 PDFs of specific standard operating procedures, and a Word file describing VPR validation. Please note: This product is sold as a compressed .EXE file. To ensure proper functionality, you must save the file in a .ZIP format before trying to access the files.
WIP Standard
2013-11-18
This SAE Recommended Practice establishes uniform test procedures and performance requirements for the defrosting system of enclosed cab trucks, buses, and multipurpose vehicles. It is limited to a test that can be conducted on uniform test equipment in commercially available laboratory facilities. Current engineering practice prescribes that for laboratory evaluation of defroster systems, an ice coating of known thickness be applied to the windshield and left- and right-hand side windows to provide more uniform and repeatable test results, even though under actual conditions such a coating would necessarily be scraped off before driving. The test condition, therefore, represents a more severe condition than the actual condition, where the defroster system must merely be capable of maintaining a cleared viewing area. Because of the special nature of the operation of most of these vehicles (where vehicles are generally kept in a garage or warmed up before driving) and since defrosting under steady-state over-the-road operations is the main concern, test conditions have been adopted which assume that the engine is warm before the vehicle is driven.
Technical Paper
2013-11-15
Shoaib Iqbal, Farid Al-Bender, Bert Pluymers, Wim Desmet
The objective of the present study is to experimentally characterize the drag torque in open multi-disks wet clutches. For this purpose, two groups of experiments are performed using an advanced SAE#2 test setup. The experiments are designed under real conditions of variable automatic transmission fluid (ATF) flow rate and higher clutch speed range as experienced by wet clutches in real operation. The first test group examines the influence of parameters such as ATF flow rate, ATF temperature, and disks size whereas, the second test group investigates the effect of disks rotational conditions on the drag torque. By analyzing, the obtained experimental results, the relationship between the amount by which the parameters are varied and the corresponding change in the drag torque are established. In addition, a general qualitative behavior of the drag torque as function of clutch speed is proposed and the associated physical phenomena are explained.
WIP Standard
2013-11-14
This SAE Standard establishes the test procedure, environment, and instrumentation for determining the sound levels of motorcycles under stationary conditions. This test will measure primarily exhaust noise and does not represent the optimum procedure for evaluating total vehicle noise. For this purpose, SAE J331 or SAE J47 is recommended.
Standard
2013-11-13
The purpose of this SAE Information Report is to compare the results of Florida exposure at 45 deg from the horizontal, facing south, with those at deg from the horizontal, facing south, using various types and colors of automotive finishes.
Standard
2013-11-12
This standard establishes the requirements and the procedures for impulse testing of hose assemblies, tubing, and fittings for use in aerospace metric hydraulic systems.
Book
2013-11-12
Hiroshi Nakamura, Masayuki Adachi
The subject of engine emissions is expected to be at the forefront of environmental regulations and consumers’ concerns for years to come. As technology develops to comply with new and different requirements in various regions of the world, understanding the fundamental principles of how engine emissions occur, and how they can be properly measured, is vitally important. Engine Emissions Measurement Handbook, developed and co-authored by HORIBA Automotive Test Systems team addresses the main aspects of this subject. Written with the technical user in mind, this title is a must-have for those involved in engine development and testing, and environmental researchers focusing on better ways to minimize emissions pollution. Using easy-to-understand language, Engine Emissions Measurement Handbook covers, among others, the following topics: • Measurement of gaseous emissions • Measurement of particulate emission • Evaporative emissions measurement • Principles of exhaust gas analyzers • Vehicle emissions testing equipment • Emissions measurement applications • Emissions regulations around the world
Standard
2013-11-11
Gas compressors (air and other compressible fluids) have been used sporadically since the 1940's for various utility functions in aerospace applications. They have been used to provide power to gun purge and drive systems, engine or APU starters (recharge accumulators), reservoir pressurization, cockpit pressurization, braking systems, canopy seals, engine control divides, landing gear activation, and boosted flight controls (see Table 1). In current state-of-the-art aircraft, most pneumatic system power is extracted from a stage of compression in the turbo-jet engine. As more and more demands are put on new generation engines for fuel economy and performance there is an increasing need for a new source of pneumatic power. This document is intended to describe current state-of-the-art technology in compressors, define the limitations, discuss enhancements needed and attempt to predict the needs of the future.
Standard
2013-11-11
The AS81824 specification covers environment resistant, permanent crimp type, splices having heat shrinkable insulating sleeve and meltable environmental seals or heatless sealing sleeves. The splices may be used with tin, nickel, and silver plated conductors in applications where the total temperature of the splice application does not exceed 200 °C or as specified in the detail specification.
Standard
2013-11-11
This SAE Aerospace Recommended Practice (ARP) describes the etching of fluoropolymer electrical wire insulations to ensure that all facets of the process from the chemistry to the processing, to the storage and handling are well defined.
Standard
2013-11-11
Scope is unavailable.
Standard
2013-11-07
This SAE Standard establishes the test procedure, environment, and instrumentation for determining the exterior sound level for passenger cars, multipurpose vehicles, and light trucks having a gross vehicle mass rating of 4540 kg or less. The test procedure is characterized by having fixed initial conditions, i.e., an as-specified initial vehicle speed and gear selection at a fixed start point on the test site. Full-throttle acceleration and closed-throttle deceleration of the vehicle are included in this procedure. Sound levels determined in accordance with this document are dependent on the performance capability of the test vehicle, as influenced by power-to-mass ratio and overall powertrain gear ratio.
Standard
2013-11-07
This SAE Standard is equivalent to ISO Standard 362 - 1997 except for the differences detailed in Appendix A, and includes the modifications adopted by WP 29 in ECE R51 Revision 1 and EEC 92/97 and EEC 96/20. This document specifies an engineering method for measuring the noise emitted by accelerating highway vehicles of all types (except motorcycles) in intermediate gears with full utilization of the available engine power. The method is designed to meet the requirements of simplicity and reproducibility of results under realistic vehicle operating conditions. Measurements relate to operating conditions of the vehicle which give the highest noise level consistent with urban driving and which lead to reproducible noise emissions. Therefore, an acceleration test at full throttle from a stated engine or vehicle speed is specified. The test method calls for an acoustical environment which can only be obtained in an extensive open space. Such conditions can usually be provided for: a. Measurements at the manufacturing stage b.
Standard
2013-11-06
This document establishes the minimum criteria for effective training of air carrier and contractor personnel to deice/anti-ice aircraft to ensure the safe operation of aircraft during ground icing conditions. Appendix D specifies guidelines for particular airplane models.
WIP Standard
2013-11-05
STANDARD CRIMP TOOL FOR M39029/56, /58, /117, /118, /121, /123 CONTACTS (SIZE 10 AND 12 WIRES).
WIP Standard
2013-11-04
AS81511/6 will allow the conversion of the MIL-C-81511/6 to an AS specification.
Viewing 241 to 270 of 22272

Filter

  • Book
    43
  • Collection
    3
  • Magazine
    353
  • Technical Paper
    15188
  • Subscription
    1
  • Standard
    6684
  • Article
    0