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Improving and Evaluating Aircraft Maintenance On-Time Performance for Wide-Body A-Checks Delays

SORT Engineering GmbH-Adel A. Ghobbar
  • Technical Paper
  • 2019-01-1909
To be published on 2019-09-16 by SAE International in United States
Martinair is based on Schiphol Oost and is part of the KLM Group since 2008. The KLM Group on its turn is part of the Air France – KLM Group. Martinair started as a charter company and was founded by Martin Schröder. Martinair is now a cargo operator with its own maintenance base at Hangar 32 on Schiphol Oost. It operates 7 McDonnell Douglas MD-11’s and 6 Boeing B747-400’s. The focus will be on the MD-11 tri-jet in this thesis. Due to the entry in the KLM Group in 2008, changes have been made for synergy reasons to the Martinair organisation. Martinair Maintenance and Engineering is now focussing on becoming a Regional Jet Center. The maintenance on the Embraer E-190 of KLM Cityhopper will be the main part of the work. Due to the new focus of the Martinair maintenance and engineering department, the maintenance capacity for a MD-11 A-check will no longer be available. It is therefore chosen to outsource the MD-11 A-check from Martinair maintenance and engineering to KLM engineering and maintenance. The…
 

Investigation into the benefits of implementing a fully integrated MRO Software system in Airlines Maintenance and Engineering

SORT Engineering GmbH-Adel A. Ghobbar
  • Technical Paper
  • 2019-01-1908
To be published on 2019-09-16 by SAE International in United States
Case studies of various MRO organizations were researched in order to gain a better understanding of the business procedures used in each department of an aircraft maintenance company. The software systems available to aid business processes were researched to understand the computer processes, functions and operational requirements of these software programs. The planning and scheduling of inventory and manpower resources is complex and requires various parameters to be computed by the software systems in order to adequately plan the necessary aircraft maintenance resources. Case studies of aircraft maintenance companies that previously implemented integrated IT software solutions to control and monitor department functions were researched to identify and understand the various problems encountered by these companies during the software implementation phase. Understanding the problems that could potentially occur during the implementation is necessary to ensure similar mistakes are not repeated. The improvements and gains to efficiency that can be expected once the integrated IT system is operational were also considered. The work flow processes in the Brussels Airlines MRO Stores (incoming inspection) and Maintenance Planning departments…
 

The Research on Validation and Verification Method of Configuration Data for IMA Resources Allocation

1.UESTC; 2. CETC Avionics Co., Ltd.-Yunsheng Wang
CETC Avionics Co Ltd-Yan-xiao Li
  • Technical Paper
  • 2019-01-1850
To be published on 2019-09-16 by SAE International in United States
Integrated Modular Avionics (IMA) system comprises IMA platform and hosted applications. The IMA platform provides the hosted applications with shared resources, e.g. computing, memory, communication, health monitoring resources. As a bridge between them, the IMA configuration data specifies how these shared resources are allocated to each hosted application. The IMA configuration data, which is different from real hardware and software code, should be validated and verified as an important portion of IMA system. After a brief introduction of IMA system, development processes, and general means of compliance for certification, this paper proposed a Architecture Analysis and Design Language (AADL) model of IMA configuration based on a case study of airborne datalink system. Based on the model, the IMA configuration data is abstracted and categorized into several types, with the correspondent means of compliance identified for each type. Furthermore, the associated roles and responsibilities are discussed for IMA configuration data validation and verification. The IMA configuration data specific means of compliance, the validation and verification processes, the roles and responsibilities, together form a method for validating…
 

Self-affinity of an Aircraft Pilot's Gaze Direction as a Marker of Visual Tunneling

Bordeaux University - IMB UMR CNRS 5251-Pierrick Legrand
Bordeaux University - INP Bordeaux - IMS-Jean-Marc André, Éric Grivel
  • Technical Paper
  • 2019-01-1852
To be published on 2019-09-16 by SAE International in United States
For the last few years, a great deal of interest has been paid to crew monitoring systems in order to address potential safety problems during a flight. They aim at detecting any degraded physiological and/or cognitive state of an aircraft pilot or crew, such as visual tunneling, also called inattentional blindness. Indeed, they might have a negative impact on the performance to pursue the mission with adequate flight safety levels. One of the usual approaches consists in using sensors to collect physiological signals which are then analyzed. Two main families exist to process the signals. The first one combines feature extraction and machine learning whereas the second is based on deep-learning approaches which require a large amount of labeled data. In this work, we focused on the first family. In this case, various features can be deduced from the data by different approaches: spectrum analysis, a priori modeling and nonlinear dynamical system analysis techniques including the estimation of the self-affinity of the signals. In this paper, our purpose was to uncover whether the self-affinity of…
 
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Terms and Definitions Related to Testing of Automated Vehicle Technologies

DIN SAE Consortium
  • Ground Vehicle Standard
  • DINSAESPEC91381
  • Current
Published 2019-06-10 by Beuth Verlag GmbH in Germany

This bilingual DIN SAE SPEC (German/English) defines terms used in automated vehicle technology, particularly terms relating to simulations and test environments. This document will be a useful tool for further research and development activities in this area, and for better communication with international partners. It will help unify language in this complex, interdisciplinary field.

 
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JAUS Autonomous Capabilities Service Set

AS-4JAUS Joint Architecture for Unmanned Systems Committee
  • Aerospace Standard
  • AS8024
  • Current
Published 2019-06-10 by SAE International in United States

This document defines a set of standard application layer interfaces called JAUS Autonomous Capabilities Services. JAUS Services provide the means for software entities in an unmanned system or system of unmanned systems to communicate and coordinate their activities. The Autonomous Behaviors Services represent the platform-independent capabilities commonly found in platforms across domains, including air, maritime, and ground. At present five (5) services are defined in this document. These services are:

 
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How Dual Polarization Technique May Improve Weather Radar on Commercial Aircraft

NOVIMET-Jacques Victor Testud, Emmanuel Moreau, Erwan Le Bouar
Published 2019-06-10 by SAE International in United States
The airborne weather radar on a commercial aircraft is essential to ensure flight safety. It is able to detect severe weather, probable areas where presence of hail may be suspected, and thanks to its Doppler capability, the wind shears that may be dangerous when taking-off or landing. However, because it operates at X-band, the picture that it offers to the pilot may be seriously biased in situation of severe weather, in reason of the attenuation of the radar wave.The adoption of the dual pol technique in this weather radar would be most beneficial for the quality of the information delivered to the pilot for the following reasons:1Dual pol technique allows to operate a classification of the precipitation: distinguishing rain, melting layer, snow, hail, small ice particles.2Dual pol technique allows correcting the return signal for attenuation in rain.The paper aims reporting recent advances in the exploitation of dual pol radar data, based on the concept of normalisation of the particle size distribution (PSD) and on ZPHI® algorithm for precipitation retrieval. Their combination helps retrieving parameter N0*…
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The North Dakota Citation Research Aircraft Measurement Platform

University of North Dakota-David Delene, Michael Poellot
Weather Modification International-Kurt Hibert, Neil Brackin
Published 2019-06-10 by SAE International in United States
The North Dakota Citation Research Aircraft is a Cessna Citation II twin-engine fan-jet aircraft modified to be an atmospheric research platform that has been used on many field projects since the 1970s. The typical sampling speed of the modified Citation II is 160 knots indicated air speed (IAS), with sampling at altitudes up to 12.1 km (40,000 ft). The Citation Research Aircraft was operated by the University of North Dakota (UND) for many years but is now operated by Weather Modification International (WMI) of Fargo, North Dakota. WMI and UND together provide a unique test facility that is capable of deploying a wide range of instrumentation. WMI has the experience to install the custom instrumentation required for a specific field project and the expertise to conduct the most demanding aircraft sampling, including thunderstorm in-situ measurements. UND provides scientific know-how on obtaining measurements at the required accuracy and experience to ensure instruments are performing well. Robust, open-source software tested for over 15 years provides the ability to quickly process data to enable analysis to begin shortly…
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Design and Validation of Low-Cost Intensity Probe

Michigan Technological University-Karan Gundre, Andrew Barnard
Published 2019-06-05 by SAE International in United States
Sound intensity measurement techniques that used a two-microphone configuration, were first developed in the late 1970s. Originally, the focus was on improving precision during testing or post-processing. However, with the advent of modern, sophisticated equipment, the focus has shifted to the apparatus. Availability of phase-matched microphones has made post-test correction obsolete as the microphones eliminate a majority of the errors before the data is even collected. This accuracy, however, comes at a cost, as phase-matched microphones are highly priced. This paper discusses employing the method of improving post-processing precision, using inexpensive, current equipment. The phase error of the system is corrected using a simple calibration technique and a handheld phase calibrator that is similar to the one used for amplitude calibration of microphones. The intensity probe and calibrator is manufactured using rapid prototyping and the executable software that goes with the probe is designed in NI LabVIEW. The entire setup uses inexpensive parts to lower the cost and modern software to compensate for the errors due to these parts. The design of the probe and…
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Developing a Custom Data Acquisition Software Package for a Self-contained Acoustic Test Facility

Kolano and Saha Engineers, Inc.-Richard Kolano, Sagar Patil, Pranab Saha
Published 2019-06-05 by SAE International in United States
This paper provides an overview of a custom software developed to obtain measurement data in a self-contained acoustic test facility system used for conducting random incidence sound absorption tests and sound transmission loss tests on small samples in accordance with SAE J2883 and J1400 standards, respectively. Special features have been incorporated in the software for the user to identify anomalies due to extraneous noise intrusion and thereby to obtain good data. The paper discusses the thoughts behind developing user-friendly algorithms and graphical user interfaces (GUI) for the sound generation, control, data acquisition, signal processing, and identifying anomalies.
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