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Electromechanical Actuators Specification Guide

A-6B3 Electro-Mechanical Actuation Committee
  • Aerospace Standard
  • ARP5754
  • Current
Published 2019-06-10 by SAE International in United States
This Aerospace Recommended Practice (ARP) provides general characteristics, requirements, and design data to be recommended for inclusion in a procurement technical specification of an electromechanical actuator (EMA), including its control and monitoring.
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Flight Control Actuators - Dynamic Seals, Collection of Duty Cycle Data

A-6A3 Flight Control and Vehicle Management Systems Cmt
  • Aerospace Standard
  • ARP4895B
  • Current
Published 2019-05-16 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) provides an algorithm aimed to analyze flight control surface actuator movements with the objective to generate duty cycle data applicable to hydraulic actuator dynamic seals.
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UAV Ground Control Station

  • Magazine Article
  • TBMG-34328
Published 2019-05-01 by Tech Briefs Media Group in United States

General Atomics Aeronautical Systems, Inc. San Diego, CA 858-762-6700

 

Aircraft Nosewheel Steering/Centering Systems

A-5B Gears, Struts and Couplings Committee
  • Aerospace Standard
  • AIR1752A
  • Current
Published 2019-04-17 by SAE International in United States
The intent of this AIR is twofold: (1) to present descriptive summary of aircraft nosewheel steering and centering systems, and (2) to provide a discussion of problems encountered and “lessons learned” by various airplane manufacturers and users. This document covers both military aircraft (land-based and ship-based) and commercial aircraft. It is intended that the document be continually updated as new aircraft and/or new “lessons learned” become available.
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Design and Verification of Aircraft Nose Wheel Steering Systems

A-5B Gears, Struts and Couplings Committee
  • Aerospace Standard
  • ARP1595B
  • Current
Published 2019-04-17 by SAE International in United States
This document provides recommended practices for the design, development, and verification testing of NWS systems.
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Streamlining EMC Solutions for Avionics Interfaces

Aerospace & Defense Technology: February 2019

  • Magazine Article
  • 19AERP02_04
Published 2019-02-01 by SAE International in United States

Lightning strikes to jet airliners are common - about once every 1000 flight hours. The DO-160G standard, Environmental Conditions and Test Procedures for Airborne Equipment, is a standard for the environmental testing of avionics hardware. Many airplane manufacturers specify DO-160G Section 22, lightning induced transient susceptibility, as a requirement for critical systems like guidance, radars, communications, engine control, and heat and air controls. Aircraft fuselage, wing and tail flight controls, wing tips, fin tips, engine nacelles, and landing gear are the areas most likely to be hit by lightning strikes.

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Safety Assessment of Transport Airplanes in Commercial Service

S-18C ARP5150A and ARP5151A Working Group
  • Aerospace Standard
  • ARP5150A
  • Current
Published 2019-01-02 by SAE International in United States
This document describes guidelines, methods, and tools used to perform the ongoing safety assessment process for transport airplanes in commercial service (hereafter, termed “airplane”). The process described herein is intended to support an overall safety management program. It is associated with showing compliance with the regulations, and also with assuring a company that it meets its own internal standards. The methods identify a systematic means, but not the only means, to assess ongoing safety. While economic decision-making is an integral part of the safety management process, this document addresses only the ongoing safety assessment process. To put it succinctly, this document addresses the “Is it safe?” part of safety management; it does not address the “How much does it cost?” part of the safety management. This document also does not address any specific organizational structures for accomplishing the safety assessment process. While the nature of the organizational structure is significant to the quality of a safety program, this document focuses on the functions to be accomplished and does not attempt to define what the structure…
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Aircraft Virtual Flight Testing and Certification in Off-nominal Multifactorial Situations

  • Professional Development
  • C1892
Published 2018-12-13

The behavior of a 'pilot-automaton-aircraft-operating environment' system (the System) in off-nominal situations with multiple risks can be unpredictably dangerous. Most multifactorial flight scenarios (corner cases) are considered as theoretically improbable. Such anomalies do nonetheless occur in operations and can lead to inconceivable accidents - 'black swan' events. This intensive educational course introduces the audience to the technology of aircraft virtual flight testing and certification (VFTС) for safety, considering the cross-coupling effects of various combinations of heterogeneous risk factors characteristic to the four components of the System.

 

An Integrated Approach to Model Based Engineering with SysML, AADL and FACE

ANSYS-Thierry LeSergent
AVIC Digital Corporation Ltd.-Wang Zhe
Published 2018-10-30 by SAE International in United States
Multiple model-based engineering (MBE) frameworks have emerged to cover the many requirements for the engineering of avionics systems: from early requirement capture to the final system and embedded software generation, through refinement and V&V activities. In this paper, we consider the SysML, AADL and FACE standards. They are promoted by different standardization bodies, with different objectives. We note they are often seen as competitive, while we argue it is the opposite: there is a potential for a synergistic coupling. To date, no complete open evaluation on the feasibility of such capability has been done.In this paper, we present one workflow that illustrates the joint use of SysML, AADL and FACE. We consider a basic flight control system to exercise the proposed process and gateways between the three notations. We use SCADE Architect by ANSYS that supports the three notations in a unified workbench to illustrate refinement scenarios from one notation to another, then synchronize with SCADE Suite to complete the software development.
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Integrated Rudder and Brake Pedal Unit, General Requirements for Fly-By Wire Transport and Business Aircraft

A-6A3 Flight Control and Vehicle Management Systems Cmt
  • Aerospace Standard
  • ARP6252
  • Current
Published 2018-10-15 by SAE International in United States
This Aerospace Recommended Practice (ARP) provides general requirements for a generic, integrated rudder and brake pedal unit, incorporating a passive force-feel system that could be used for fixed-wing fly-by wire transport and business aircraft. This ARP addresses the following: The functions to be implemented The mechanical interconnection between captain and F/O station The geometric and mechanical characteristics The mechanical, electrical, and electronic interfaces The safety and certification requirements
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