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A Systematic Approach to Development Assurance and Safety of Unmanned Aerial Systems

Textron Aviation-Cory R. Laflin
  • Technical Paper
  • 2020-01-0043
To be published on 2020-03-10 by SAE International in United States
The unrestrained design space for unmanned aerial systems (UAS) presents challenges to accurate safety assessment and the assurance of development to appropriate levels of rigor within those systems. The established safety and development assurance standards and practices were developed for vehicles operating in highly controlled conditions with continuous oversight. The very nature of unmanned systems introduce new failure conditions, even in those systems operating within the strict rules of the National Airspace System (NAS), particularly failures of control and command, situational awareness, and control security. Beyond those, the new concepts of operation being conceived by UAS developers introduce their own new set of considerations with regards to operating in uncontrolled airspace, often in close proximity to bystanders. These new concepts require new technologies beyond those currently supported by the hardware and software development assurance processes. However, the established standards and practices of aircraft development assurance and safety assessment can be adapted for the broader world of UAS applications, provided that the considerations driven by the new concepts of operation can be identified and properly analyzed.…
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Customer Profile Identification and correlation between the customer damage and durability tests

FCA Fiat Chrysler Automóveis Brasil LTDA-Fabricio Passos, Filipe Maduro, Irving Coura, Matheus Braga
  • Technical Paper
  • 2019-36-0189
Published 2020-01-13 by SAE International in United States
Vehicle durability is related to its long-term performance. In order to assess the vehicle, subsystems and components expected life, those are subjected to extreme conditions to identify possible issues, detecting its causes and consequences, in order to reach a desired standard of excellence in the future.In the context, durability tests have been facing new challenges: Not only Vehicle development cycles have been reduced, but also there is a strong demand for weight reduction. Therefore, increasing the assertiveness of test parameters is a key factor in achieving these two demands.The present study aims to develop a method that allows the correlation between the durability tests and the customer use profile. Thus, it will be possible to determine a durability target aligned to the actual damage load which the vehicles are subjected, setting the test severity level to represent the customer demand.
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Marking of Electrical Insulating Materials

AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
  • Aerospace Standard
  • AS5942
  • Current
Published 2019-12-27 by SAE International in United States
This specification establishes the performance requirements for the identification of wire and cable by indirect markings that have been applied to electrical insulating materials including heat shrink sleeving, wrap around labels and “tie-on” tags as well as any other types of materials used for indirect marking. This specification covers the processes used to mark these materials, including impact ink marking, thermal transfer, hot stamp, and lasers, etc. This specification does not cover the direct marking on insulated electrical wires and cables.
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Refrigeration Tube Fittings—General Specifications

Air Brake Tubing and Tube Ftg Committee
  • Ground Vehicle Standard
  • J513_201912
  • Current
Published 2019-12-19 by SAE International in United States
This SAE Standard covers complete general and dimensional specifications for refrigeration tube fittings of the flare type specified in Figures 1 to 42 and Tables 1 to 15. These fittings are intended for general use with flared annealed copper tubing in refrigeration applications. Dimensions of single and double 45 degree flares on tubing to be used in conjunction with these fittings are given in Figure 2 and Table 1 of SAE J533. The following general specifications supplement the dimensional data contained in Tables 1 to 15 with respect to all unspecified details.
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Development of Refinery Additive Response Models to Optimise Fuel Production for New Internal Combustion Engine Technology

Infineum UK-Dhanesh Goberdhan
  • Technical Paper
  • 2019-01-2191
Published 2019-12-19 by SAE International in United States
There is increasing pressure to reduce well-to-wheel CO2 emissions in the internal combustion engine (ICE). This will require improvements in engine technology. An important aspect will include identification of the right fuel to match the new ICE’s requirements. It will likely require fuel production to move away from current production types. This is an additional optimisation that refineries will have to consider along with the other factors they balance to remain profitable.The use of additives is a key enabler to ensure that the fuels produced are fit-for-purpose whilst increasing refinery flexibility and hence profitability. However, for fuels, such as diesel, it has proved difficult to understand the variability of additive response with changes in fuel composition. This is particularly true for the cold flow response where subtle differences in fuels can impact additive appetite.This paper describes how we have employed novel systematic ways of characterising and analysing diesel to identify the key parameters that impact fuel additive response. How, with the use of modern formulation methodology, we have built an understanding of additive response, constructing…
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Aluminum Alloy, Plate (2397-T87) 2.8Cu - 1.4Li - 0.30Mn - 0.12Zr - 0.10Zn Solution Heat Treated, Cold Worked, and Artificially Aged

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4328B
  • Current
Published 2019-11-25 by SAE International in United States
This specification covers an aluminum alloy in the form of plate 3.000 to 6.000 inch (76.20 to 152.40 mm), inclusive, in nominal thickness (see 8.5).
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Aluminum Sheet, Laminated Surface Bonded

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4013H
  • Current
Published 2019-11-25 by SAE International in United States
This specification covers aluminum and aluminum alloy foil in the form of laminated sheet.
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INSERT, SCREW THREAD, SELF-LOCKING LOCKED IN, KEY LOCKED, EXTRA HEAVY DUTY, SELF-BROACHING KEYS, UNS S66286

E-25 General Standards for Aerospace and Propulsion Systems
  • Aerospace Standard
  • AS3546B
  • Current
Published 2019-11-21 by SAE International in United States
No Abstract Available.
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STUD - STRAIGHT, NECKED, .3750-16UNS X .3750-24UNF-3A

E-25 General Standards for Aerospace and Propulsion Systems
  • Aerospace Standard
  • AS126881B
  • Current
Published 2019-11-21 by SAE International in United States
No Abstract Available.
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INSERT, SCREW THREAD, SELF-LOCKING, LOCKED IN, KEY LOCKED, HEAVY-DUTY, SELF-BROACHING KEYS, UNS S66286

E-25 General Standards for Aerospace and Propulsion Systems
  • Aerospace Standard
  • AS3545A
  • Current
Published 2019-11-21 by SAE International in United States
No Abstract Available.
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