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Fundamentals in Wire Selection and Sizing for Aerospace Applications

AE-7C Systems
  • Aerospace Standard
  • AIR6540A
  • Current
Published 2020-03-06 by SAE International in United States
The scope of this report is to capture fundamental principles of selecting a wire size for an aerospace application using the method prescribed in the AS50881 standard and additional calculations, not found in AS50881, to ensure the wire selection will adequately perform in the specific physical and environment conditions. This report covers wire selection and sizing as part of the electrical wire interconnection systems (EWIS) used in aerospace vehicles. Aerospace vehicles include manned and unmanned airplanes, helicopters, lighter-than-air vehicles, missiles, and external pods. This document does not apply to wiring inside of airborne electronic equipment but shall apply to wiring externally attached to such equipment. Wire selection must consider physical and environmental factors to size wires such that they have sufficient mechanical strength, do not exceed allowable voltage drop levels, are protected by materials or circuit protection devices, and meet circuit current carrying requirements. For electrical power feeders and distribution, or EWIS applications, other information and environmental and installation limitations are also needed to adequately evaluate and select the correct wire size for a specific…
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Metallic Materials Properties Development and Standardization (MMPDS) Handbook - 14

  • Book
  • B-986
Published 2020-03-05 by Battelle Memorial Institute in United States

The Metallic Materials Properties Development and Standardization MMPDS-14supersedes MMPDS-13 and prior editions of the MMPDS Handbook as well as all editions of MIL-HDBK-5, Metallic Materials and Elements for Aerospace Vehicle Structures Handbook that was maintained by the U.S. Air Force. The last edition, MIL-HDBK-5J was cancelled by the U.S. Air Force in March 2006.

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User’s Manual for Certification of Aircraft Electrical/Electronic Systems for the Indirect Effects of Lightning

AE-2 Lightning Committee
  • Aerospace Standard
  • ARP5415B
  • Current
Published 2020-03-05 by SAE International in United States
This ARP provides detailed information, guidance, and methods in support of the Federal Aviation Administration (FAA) Advisory Circular (AC) 20-136. AC 20-136 provides a means, but not the only means, for demonstrating compliance with Title 14 of the Code of Federal Regulations (14 CFR) 23.1306 (Amendment 23-61), 23.2515 (Amendment 23-64), 25.1316, 27.1316, and 29.1316. It is also intended for this ARP to provide the same information, guidance, and methods, to the European Aviation Safety Agency (EASA) certification specifications CS 23.1306 (Amendment 23/4), 23.2515 (Amendment 23/5), 25.1316, 27.1316, and 29.1316, and associated Acceptable Means of Compliance (AMC) 20-136. This ARP provides references relevant to identifying: (1) acceptance criteria for the indirect effects of lightning compliance approaches, (2) verification (analysis and test) methods including those associated with multiple stroke and multiple burst, (3) recommended design options to optimize needed system immunity to lightning indirect effects, and (4) provide guidance in the areas of continued airworthiness of the lightning protection. Equipment hazards due to the indirect effects on equipment mounted on the aircraft exterior, equipment located within the…
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Permanently or Semi-Permanently Installed Diagnostic Communication Devices, Security Guidelines

Vehicle E E System Diagnostic Standards Committee
  • Ground Vehicle Standard
  • J3005-2_202003
  • Current
Published 2020-03-04 by SAE International in United States

The scope of the document is to define the cyber-security best practices to reduce interference with normal vehicle operation, or to minimize risk as to unauthorized access of the vehicle's control, diagnostic, or data storage system; access by equipment (i.e., permanently or semi-permanently installed diagnostic communication device, also known as dongle, etc.) which is either permanently or semi-permanently connected to the vehicle's OBD diagnostic connector, either SAE J1939-13, SAE J1962, or other future protocol; or hardwired directly to the in-vehicle network. This document only specifies requirements and guidance for those diagnostic communication devices and not for the vehicle. Refer to SAE J3138 for requirements for the vehicle side.

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Specification Definitions - Hydraulic Backhoes

MTC1, Loaders, Crawlers, Scrapers and Mounted Attachments
  • Ground Vehicle Standard
  • J49_202003
  • Current
Published 2020-03-04 by SAE International in United States
This standard applies to hydraulic backhoes which have no more than 190 degrees of rotational swing and are mounted on wheeled tractors and crawler tractors.
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Laboratory Measurement of Random Incidence Sound Absorption Tests Using a Small Reverberation Room

Acoustical Materials Committee
  • Ground Vehicle Standard
  • J2883_202003
  • Current
Published 2020-03-04 by SAE International in United States
This SAE Recommended Practice describes a laboratory test procedure for measuring the random incidence sound absorption performance of a material or a part in a small size reverberation room by measuring decay rates. The absorption performance may include sound absorption coefficient of the test sample and or the amount of energy absorbed by the test sample. Materials for absorption treatments may include homogeneous materials, nonhomogeneous materials, or a combination of homogeneous, nonhomogeneous, and/or inelastic impervious materials. These materials are commonly installed in the mobility products and in the transportation systems such as ground vehicles, marine products, aircraft, and commercial industry (in industrial and consumer products) to reduce reverberant sound build-up and thus reduce the noise level in the environment by minimizing reflections off of hard surfaces. The test method described herein was developed also to describe a way to measure the absorption performance of a part or a sound package system that will relate to an application. It can be used to rank order materials for application on panels using general automotive steel but also…
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Test Slabs, Acrylonitrile Butadiene (NBR-L) Low Acrylonitrile, 65 - 75

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS3217/2D
  • Current
Published 2020-03-04 by SAE International in United States
This specification covers a standard acrylonitrile butadiene (NBR-L) rubber stock with low acrylonitrile content in the form of molded test slabs.
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Hot Plate Method for Evaluating Heat Resistance and Thermal Insulation Properties of Materials

Acoustical Materials Committee
  • Ground Vehicle Standard
  • J1361_202003
  • Current
Published 2020-03-04 by SAE International in United States
This test method is applicable for rating various materials, such as automotive trim materials and insulation composites, for their ability to resist heat transfer, heat degradation, odor, smoking, and exothermic reaction under prescribed temperature.
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Nomenclature - Hydraulic Backhoes

MTC1, Loaders, Crawlers, Scrapers and Mounted Attachments
  • Ground Vehicle Standard
  • J326_202003
  • Current
Published 2020-03-04 by SAE International in United States
This SAE standard includes hydraulic backhoes which have no more than 190 degrees of rotational swing and are mounted on wheeled tractors and crawler tractors. Illustrations used are not intended to include all existing commercial machines or to be exact descriptions of any particular machine. The illustrations have been chosen to describe the principles to be used in applying this standard.
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BEARING, BALL, AIRFRAME, ANTI-FRICTION, HEAVY DUTY

ACBG Rolling Element Bearing Committee
  • Aerospace Standard
  • AS27640E
  • Current
Published 2020-03-04 by SAE International in United States
No Abstract Available.
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