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Author: Vasileios Tambouratzis
Publisher:
ISBN: 9781423527718
Category :
Languages : en
Pages : 89
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Book Description
During the last years, military budgets have been dramatically reduced and the services have been unable to acquire sufficient new systems. Military aviation is one of the areas that have been severely impacted. The result is that the current fleet faces significant aging aircraft problems. Aircraft wiring is one of the areas that have severly affected by the aging process. Recent accidents involving aging wiring problems and reduced operational readiness due to aging wiring have made clear that aging aircraft wiring presents a difficult and complicated problem for the military aviation. However, current maintenance practices fail short in successfully inspecting and maintaining wiring. The purpose of this thesis is to provide a proactive management plan to deal with aging wiring. The objective is to come up with a systematic process in order to identify and prevent serious failures caused by electrical faults of wiring systems. This process will be based on the principle of Reliability Centered Maintenance (RCM).
Author: Vasileios Tambouratzis
Publisher:
ISBN: 9781423527718
Category :
Languages : en
Pages : 89
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Book Description
During the last years, military budgets have been dramatically reduced and the services have been unable to acquire sufficient new systems. Military aviation is one of the areas that have been severely impacted. The result is that the current fleet faces significant aging aircraft problems. Aircraft wiring is one of the areas that have severly affected by the aging process. Recent accidents involving aging wiring problems and reduced operational readiness due to aging wiring have made clear that aging aircraft wiring presents a difficult and complicated problem for the military aviation. However, current maintenance practices fail short in successfully inspecting and maintaining wiring. The purpose of this thesis is to provide a proactive management plan to deal with aging wiring. The objective is to come up with a systematic process in order to identify and prevent serious failures caused by electrical faults of wiring systems. This process will be based on the principle of Reliability Centered Maintenance (RCM).
Author: Kedarnath Nagoti
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 232
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Book Description
Author: Mark E. Nieto
Publisher:
ISBN: 9781423531920
Category :
Languages : en
Pages : 81
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Book Description
The Navy and Marine Corps provide key forward-presence, crisis response and war-fighting capabilities to our nation's leaders and joint commanders. Naval Aviation plays a central role in every naval mission. Unfortunately, the tools of naval aviation's power, its aircraft, are becoming alarmingly old. The average age of the naval aviation inventory is in excess of eighteen years old. The nerve center of today's sophisticated aircraft, wiring, is also aging and in some cases aging faster than the aircraft themselves. This study was initiated to determine the state of aging aircraft wiring in naval aviation, explore emerging technological solutions to support these systems as they age, and make a recommendation for a course of action. This thesis provides an overview of the aging wiring problem and performs an analysis of possible technological solutions. Specifically, several prognostic and diagnostic technologies exist in the field of aircraft wiring. This thesis will discuss and evaluate these technologies in terms of ramifications, implementation, costs and benefits. Simple cost and cost savings models for technology application will be formulated using data from the Navy TAS training program and commercial airlines to make a purchase recommendation to the Naval Air Systems Command's Aging Aircraft Integrated Process Team.
Author: Anitha Jayasingh
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 204
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Book Description
Author: Derek Bates
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 92
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Book Description
Author: Tillie K. Fowler
Publisher: DIANE Publishing
ISBN: 0756722519
Category :
Languages : en
Pages : 97
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Book Description
Witnesses: Elizabeth Erickson, Dir., Aircraft Certification Service, Fed. Aviation Admin. (FAA); Richard Healing, Chmn., Aircraft Wiring and Inert Gas Generator Working Group (AWIGG), and Dir., Navy Safety and Survivability, Office of the Assistant Secretary of the Navy; Kent V. Hollinger, Chair, Aging Transport Systems Rulemaking Advisory Committee (ATSRAC); Vince Press, Dir. of Marketing, Lectromec Design Co.; Dr. Bill Linzey, Lead Technician, Lectromec Design Co.; Alexis M. Stefani, Assistant Inspector General for Auditing, U.S. Dept. of Transportation; and Rep. James L. Oberstar and James A. Traficant.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 16
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Book Description
Over the past two decades, Sandia has developed a variety of specialized analytical techniques for evaluating the long-term aging and stability of cable insulation and other related materials. These techniques have been applied to cable reliability studies involving numerous insulation types and environmental factors. This work has allowed the monitoring of the occurrence and progression of cable material deterioration in application environments, and has provided insights into material degradation mechanisms. It has also allowed development of more reliable lifetime prediction methodologies. As a part of the FAA program for intrusive inspection of aircraft wiring, they are beginning to apply a battery of techniques to assessing the condition of cable specimens removed from retired aircraft. It is anticipated that in a future part of this program, they may employ these techniques in conjunction with accelerated aging methodologies and models that the authros have developed and employed in the past to predict cable lifetimes. The types of materials to be assessed include 5 different wire types: polyimide, PVC/Glass/Nylon, extruded XL-polyalkene/PVDF, Poly-X, and XL-ETFE. This presentation provides a brief overview of the main techniques that will be employed in assessing the state of health of aircraft wire insulation. The discussion will be illustrated with data from their prior cable aging studies, highlighting the methods used and their important conclusions. A few of the techniques that they employ are widely used in aging studies on polymers, but others are unique to Sandia. All of their techniques are non-proprietary, and maybe of interest for use by others in terms of application to aircraft wiring analysis. At the end of this report is a list showing some leading references to papers that have been published in the open literature which provide more detailed information on the analytical techniques for elastomer aging studies. The first step in the investigation of aircraft wiring is to evaluate the applicability of their various techniques to aircraft cables, after which they expect to identify a limited subset of techniques which are appropriate for each of the major aircraft wiring types. The techniques of initial interest in the studies of aging aircraft wire are as follows: optical microscopy; mandrel bend test; tensile test/elongation at break; density measurements; modulus profiling/(spatially-resolved micro-hardness); oxygen induction time/oxygen induction temperature (by differential scanning calorimetry); solvent-swelling/gel fraction; infrared spectroscopy (with chemical derivatization as warranted); chemiluminescence; thermo-oxidative wear-out assessment; The first two techniques are the simplest and quickest to apply; those further down the list tend to be more information rich and in some cases more sensitive, but also generally more specialized and more time consuming to run. Accordingly, the procedure will be to apply the simplest tests for purposes of preliminary screening of large numbers of samples. For any given material type, it can be expected that only a limited number of the other techniques will prove to be useful, and therefore, the more specialized techniques will be used on a limited number of selected samples. Samples of aircraft wiring have begun to be released to the authors in late April; they include in this report some limited and preliminary data on these materials.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1000
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Author: United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Oversight, Investigations, and Emergency Management
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 164
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Book Description
