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Automated Inspection of Polished Skin

Kawasaki Heavy Industries, Ltd.-Naofumi Aoki, Takuya Ota, Masayoshi Zaitsu
  • Technical Paper
  • 2020-01-0032
To be published on 2020-03-10 by SAE International in United States
This report is about development result of an automatic defect detector for polished skins. The “polished skin” material is used for an outside plate of commercial airplanes. The polished skin is manufactured by polishing the surface of an aluminum clad material and it has a uniform high level of color, brightness, and reflectivity. It can be used without painting because the surface has a natural oxide layer which prevents corrosion. The polished skins are inspected with visual observation and it is large burden for inspectors to find minute defects on the large size materials. An automated inspection is not easy because the material has mirror surface and its size is large. Defects on the polished skin can be classified broadly into three categories: dent, bump and color change. Therefore, a defect detector has to be able to detect these defects, and measure surface profile of defects. This technical report presents the outcomes from a design and a manufacture of the defect detector which has been designed to be low cost and high performance. It has…
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Electrical Connectors for Aerospae, Shipboard, Ground Vehicles and Associated Equipment

AE-8C1 Connectors Committee
  • Aerospace Standard
  • ARP1308D
  • Current
Published 2020-01-21 by SAE International in United States
The intent of this ARP is to identify electrical connectors maintained by the AE-8C1 Committee, to provide their general application characteristics, associated configuration options, and recommendations for new design (see 6.1.1), repair, and retrofit purposes (see 6.1). It is acknowledged the connectors listed herein will not completely satisfy all mobility vehicle and equipment requirements, but optimization of the use of these components will facilitate standardization in the form of maximum utilization of a minimum variety of connectors. This ARP only pertains to AS connector standards. See MIL-STD-1353 for U.S. military specification connector information.
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Unsettled Domains Concerning Electric Propulsion Technology for Commercial Aircraft

drR2 Consulting-Ravi Rajamani
  • Research Report
  • EPR2019006
Published 2019-12-30 by SAE International in United States
According to some, electric propulsion is already on its way down the “trough of disillusionment.” This report argues that while there are some concerns with associated technologies, such pessimism is unwarranted. Yes, battery systems can be more energy dense; charging standards are late in being developed; it is not clear what technologies and architectures will win out for which sectors; we still have to figure out how to deal with thermal management issues at all levels in future designs; and what might be the certification standards for electric aircraft. But that does not mean that these issues will not be addressed. Yes, these unsettled questions may take a little longer to solve than originally estimated, but there is full expectation within the industry that electric propulsion for commercial aircraft will succeed. In this SAE EDGE Research Report we present points of view from leading researchers in the industry who are thinking deeply about solving these problems.NOTE: SAE EDGE™ Research Reports are intended to identify and illuminate key issues in emerging, but still unsettled, technologies of…
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Aircraft Fuel System Design Guidelines

AE-5A Aerospace Fuel, Inerting and Lubrication Sys Committee
  • Aerospace Standard
  • AIR7975
  • Current
Published 2019-12-05 by SAE International in United States

This document describes the major design drivers and considerations when designing a fuel system for a large commercial aircraft. It discusses the design at a system/aircraft level, and is not intended as a design manual for individual system components, though it does refer out to other SAE specifications where more detail on specific components and sub systems is given. It does include examples of a number of calculations associated with sizing of fuel systems, based on those given in NAV-AIR-06-5-504, as well as an appendix summarizing basic fluid mechanical equations which are key for fuel system design. It is acknowledged that most of these calculations would today be performed by modelling tools, rather than by hand, but it is considered important for the designer to understand the principles.

Changing How the Aerospace Industry Makes Parts

  • Magazine Article
  • TBMG-35684
Published 2019-12-01 by Tech Briefs Media Group in United States

Technology that increases production rates and part quality, while reducing setup times and costs, is seeing a surge in demand within the aerospace sector as the commercial aircraft backlog continues to grow.

Employing the Electrical Digital Twin to Mitigate Compliance Risk in Aerospace

  • Magazine Article
  • TBMG-35688
Published 2019-12-01 by Tech Briefs Media Group in United States

Delivering aircraft and various avionics compliant with the latest standards and regulations is increasingly difficult. Today, it’s not uncommon for a single commercial aircraft to comprise hundreds of line-replaceable units, hundreds of miles of wire, and unique configurations throughout all parts of a platform that must meet numerous certification requirements. With increasing electrical system content and complexity, a single change during the design, verification, or compliance process can put the entire program in jeopardy. With the rise in electrification and design complexity, aerospace original equipment manufacturers (OEMs) need to look for new methodologies to mitigate compliance risk.

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Information on Brake-By-Wire (BBW) Brake Control Systems

A-5A Wheels, Brakes and Skid Controls Committee
  • Aerospace Standard
  • AIR5372A
  • Current
Published 2019-10-25 by SAE International in United States
This SAE Aerospace Information Report (AIR) describes the design approaches used for current applications of aircraft Brake-by-Wire (BBW) control systems. The document also discusses the experience gained during service, and covers system, ergonomic, hardware, and development aspects. The document includes the lessons that have been learned during application of the technology. Although there are a variety of approaches that have been used in the design of BBW systems, the main focus of this document is on the current state of the art systems.
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Crew Station Lighting - Commercial Aircraft

A-20A Crew Station Lighting
  • Aerospace Standard
  • ARP1161B
  • Current
Published 2019-10-18 by SAE International in United States
This SAE Aerospace Recommended Practice covers the recommended requirements for the lighting and characteristics of instruments; information plates and displays, emergency, cautionary, advisory and status displays; circuit breaker and toggle switch positions; and the recommended requirements for the utility lighting system.
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Primer, Anodic Electrodeposition for Aircraft Applications

AMS G8 Aerospace Organic Coatings Committee
  • Aerospace Material Specification
  • AMS3144A
  • Current
Published 2019-10-17 by SAE International in United States
This specification establishes the requirements for a waterborne, corrosion inhibiting, chemical and solvent resistant, anodic electrodeposition epoxy primer capable of curing at 200 to 210 °F (93 to 99 °C).
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Minimum Operational and Maintenance Responsibilities for Aircraft Tire Usage

A-5C Aircraft Tires Committee
  • Aerospace Standard
  • ARP5265B
  • Current
Published 2019-10-17 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) sets forth criteria for the installation, inflation, inspection, and maintenance of aircraft tires as well as criteria for the maintenance of the operating environment so as to achieve the purpose stated in 1.1. (Definitions of terms related to aircraft tires are found in 2.2.)
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