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Maintenance for a fleet of aircraft can be viewed from a systems engineering perspective. Not only are the aircraft complex systems, the logistics of maintaining airworthy systems depend on resources such as technicians, parts, and support equipment. Support equipment which falls under the Test, Measurement, and Diagnostic Equipment (TMDE) category requires periodic calibration. The calibration process...
Performance-based Logistics (PBL) contracts require metrics and methodologies set in a systemic way to provide readiness for the warfighter at reasonable costs. There must be a clever and verifiable connection of metrics in order to access and analyze data and to deliver sound and consistent inputs for the entire support system to accomplish its goals. A system of incentives and penalties usually...
With the application of a variety of high-tech, life cycle cost of aviation equipment increased substantially. For the life cycle cost of aviation equipment, the costs of using phase account for more than 50% of total costs. Therefore, the development of aviation industry call for a method to evaluate and predict the use phase affordability of aviation equipment. This paper defines the definition...
In this paper, a new condition-based maintenance method of game for the aircraft fleet is proposed. In hope of successfully deploying the aircraft fleet, some game rules are set, which prompts the generation of maintenance strategy. And the problem is transformed into a multi-phased combinatorial optimization problem. Then an algorithm of multi-stage sequential game that based on state backtracking...
In order to establish the fault information platform that across industrial department and operation department, as well as to support improvement of civil aircraft's quality and operator's maintenance capability, based on the research of civil aircraft's fault during the operation phase, including its scope, classification and data collection mechanism, the database system and technical framework...
There is a problem of determining optimum intervals for Unmanned Aerial Vehicle maintenance. The Model of aircraft systems function state changing, offered by authors, makes possible to provide information to determine the volume, composition and execution intervals of aircraft maintenance and also enable to take into account changing components condition in an integrated manner, caused by operating...
An optimization method of aircraft periodic inspection and maintenance on the zero-failure data analysis is proposed to effectively solve excessive maintenance in this work, and decrease aircraft unserviceable time. This method includes optimization object analysis, failure distribution recognition, zero-failure data analysis by confidence limit optimal estimate and nonlinear programming solving failure...
Smart-Maintenance system integrates ICT technologies and mobile devices in order to support maintenance crew in any environment to ensure the availability of up-to-date technical information and provide more competitive services with higher levels of reliability. This allows maintenance management based on off-the-shelf tablets with user authentication based on digital certificates, role definitions,...
With the improvement of reliability of current aviation equipment, the field failure data is limited with few observations and random censoring observations. Aiming at the difficulty in reliability evaluation in this condition, a Monte Carlo simulation algorithm is employed to validate the feasibility of EM algorithm in the reliability evaluation of aviation equipments. The main thought is to assume...
With the possibility of operational readiness as the measuring guideline of operational readiness, Mean Time Between Failure (MTBF), Mean Time To Repair (MTTR) and Mean Time To Mission (MTTM) are selected as the variables of operational readiness function to analysis how the materiel's reliability, maintainability and mission intensity affect its possibility of operational readiness. An example of...
The Depot-Logistic Information Management System (DLIMS) is aimed to provide the Air Force logistics staff of all sectors with an information technology platform for convenience of management, supervision, aircraft maintenance, along with supply operations. The DLIMS in Taiwan has been established for more than 10 years. However, it has not been evaluated for its effectiveness. This study integrates...
This paper considers a parallel system with a random number of units according to a Poisson distribution. The fracture of an aircraft fuselage with multiple site damage serves as a real world application for this problem. The mean time to failure is obtained. Using this result, an optimal number of units and replacement time for the system which minimize the expected cost rates are derived analytically,...
The purpose of this paper is to broaden the application of Total Quality Management principles on maintenance issues for modern jet fighters as an attempt to further predict, improve and confirm reliability enhancement on critical aircraft systems, sub-systems or components. The proposed methodology is focused on the identification of under-performing maintenance cycles by instituting a reliability...
On the basis of analyzing the products and views in DoDAF (Department of Defense Architecture Framework), an integrated framework on modeling and simulation for SoS (System of Systems) is proposed. A modeling approach based on the DoDAF which uses ABM (Activity Based Methodology) for SoS is presented. Via SysML (Systems Modeling Language) the operational views of the model can be transferred into...
The dynamic characteristics and the estimation method of operational availability under general mission scenarios are researched. Though the simulation method can be used to study the time-varying operational availability, it has shortage in finding and analyzing the inherent law of operational availability. According to definition, the operational availability can be derived by the supply availability...
Maintenance planning is a major aspect for the aircraft manufacturers and airlines. Not having adequate spare parts in the inventory for the scheduled maintenance could result in costly flight cancellation with a negative impact on airline performance. An excess of spare parts inventory, on the other hand, leads to a high holding cost. Since airline industries involve with a large number of parts...
Aimed at the characteristics which the maintainability of aircrafts is unstable in the flight-test phase, this paper discusses the approaches of evaluating maintainability growth in case of small samples of field data. It puts emphasis on the analysis of the field data's classification. Firstly, the data are classified from two situations of maintenance process and maintenance implements. Then, the...
Avionics Systems Architecture (ASA) plays a decisive role in the mission effectiveness of today's combat aircraft.12 Airborne Fire Control Radar (FCR) being its most critical element has grown in importance and complexity and has surpassed the airframe / engine systems in terms of contribution to overall mission effectiveness and cost. However, its maintainability, reliability and life cycle cost...
C-130 aircraft is one of the most reliable military cargo aircraft12. Its reliability makes it more lucrative for military users all around the world. It forms the backbone for tactical and transportation operations. To keep the transport aircraft fly worthy, aviation industry follows a stringent scheduled inspection program. Amongst the various scheduled programs the most comprehensive and costly...
Reliability is a main technical index for aircraft of long life cycle and long storage period. Periodic test is a reasonable confirmation for keep a good reliability of aircraft system. If inspection and maintenance periodically is too long or short, it may exercise an influence upon low reliability and high economy. So, the optimal testing period is the effective way for a good reliability of aircraft...
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