"Welcome to the birthplace of MIRCE Science, an endeavour to explain and predict time evolution of performances of functionable systems by determining mechanisms of all causing actions."   Dr J. Knezevic, Founder, 1999

   

May 13, 2013

MIRCE Science Papers


Category: General
Posted by: daneswood

 Full papers are available to the 'Members ' area of  the MIRCE Akademy free of charge.

MIRCE Science Approach to Maintenance of Microbial Contamination of Fuel Tanks in COVID-19 Grounded Aircraft

Dr J. Knezevic, MIRCE Akademy, Woodbury Park, Exeter, UK

Microbial contamination of aviation fuel tanks is a known physical phenomena to airlines that are dealing with it in accordance to manufacturer guidelines. However, as the disastrous COVID-19 pandemic has left aircraft grounded and scattered across airfields around the world there is a danger that contaminated fuel could cause undesirable consequences to a fuel system like:
clogging of fuel filters, corroding tanks, performance degrading combustion quality, as well as damaging the rubber components specific to the fuel tank, thus impacting the functionability performance of an aircraft. A full understanding of these mechanisms is essential for the determination of the most effective maintenance policy for testing the fuel of grounded aircraft. Thus, the main objective of this paper is to address microbial contamination of fuel tanks in COVID-19 grounded aircraft as a potential mechanism of the motion of an aircraft through MIRCE Space. Recommendations for the fuel contamination testing maintenance programme are presented in the paper, which should assist airlines to ensure that fuel systems of over 20,000 temporarily grounded aircraft are safe when the time comes for them to resume operations.

Cannibalisation as a functionability action of MIRCE Science

Dr Jezdimir Knezevic, MIRCE Akademy, Woodbury Park, Exeter, UK

The main objective of this paper is to examine the cannibalisation process, removing a required component from a designated system and installing it on the unserviceable system, as a functionability action of MIRCE Science. It impacts the work done of a functionable system and resources consumed during a given interval of calendar time. Although the cannibalisation process improves profitability or readiness of functionable systems, it can also lead to increased costs and disruption by diverting resources from other activities and create additional technical and financial risks. Thus, cannibalisation is one of the drivers of profitability that could be predicted by applying MIRCE Profitability Equation, which considers the whole organisation as a single analytical scheme. It is a huge improvement in respect to current practices where the whole business process is partitioned into a large number of self standing models that address a few influential parameters at a time. Example of cannibalisation in Royal Navy is given in the paper.

Microbial Decontamination of Fuel Tanks as a Mechanism of the Motion of an Aircraft through MIRCE Space 

Dr J. Knezevic., MIRCE Akademy, Woodbury Park, Exeter, UK

The paper addresses the microbial decontamination of fuel tanks as a physical mechanism of the motion of an aircraft through MIRCE Space, in accordance to MIRCE Science . In cases where microbiological contamination is detected and decontamination needs to be done with biocides, up-to-date instructions in the Aircraft Maintenance Manuals should be followed to ensure that the correct method and dosage is applied. Although in-service problems with this maintenance task are not frequent, the consequences of its incorrect execution could lead to the occurrence of “a serious incident”. The case study analysed in this paper is related to the event of this type that took place at London Gatwick Airport on 26 February 2020. A full understanding of the sequence of actions that led to the occurrence of this negative functionability event is essential for drawing recommendations for the reduction of the probability of human errors during the microbial decontamination process of fuel tanks of an aircraft, some on which are presented in this paper. 

Microbial Contamination of Fuel Tanks as a Mechanism of the Motion of an Aircraft through MIRCE Space

Dr J. Knezevic, MIRCE Akademy, Woodbury Park, Exeter, UK

The paper addresses the microbial contamination of fuel tanks as a physical mechanism of the motion of an aircraft through MIRCE Space. [1] Although this phenomena is not frequently manifested its occurrences could cause undesirable consequences like: clogging of fuel filters, corroding tanks and performance degrading build up of deposits caused by the acids the microbes excrete which cause the fuel to break apart and lose combustion quality, as well as damaging the rubber system components specific to the fuel tank, impacting the functionability performance of an aircraft. A full understanding of this mechanism is essential for the accurate predictions of the functionability performance of a functionable system using MIRCE Functionability Equation. Thus, this paper focuses on the observed physical phenomena or human activities related to the microbial contamination in the aviation industry and some of them are briefly described and analysed in the paper.  Based on the evidence available recommendations for the reduction of the probability of occurrence of microbial contamination of fuel tanks are presented.

Reliability + Maintenance = Work Done 

Dr J. Knezevic,  MIRCE Akademy, Exeter, UK

The main objective of any business is to stay in business. The best way to achieve that is to increase the revenue generating work done by an asset, while reducing the resources consumed for it. One way towards that target is to improve the reliability of the asset by using appropriate engineering and production methods. Another way is to reduce the time asset spends in maintenance by applying appropriate condition monitoring and management technologies. Hence, the work done by an asset is driven by the combined impact of inherent reliability and maintenance policies chosen. Although, reliability and maintenance are well-recognised disciplines in their own rights, there is no a body of knowledge for predicting their combined impact on the work done and resources consumed, in a quantitative and comparative manner.  The main objective of this presentation is to introduce reliability and maintenance professionals to MIRCE Science, a body of knowledge that enables quantitative prediction of the complex interactions between reliability and maintenance issues on the work done by an asset and resources required. Hence, by making use of MIRCE Functionability Equation it is possible to perform quantitative trade-off between feasible reliability and maintenance options to select the compromising solution that would yield greatest benefit measured through the work done.  A numerical example, where the trade off between reliability improvements by increasing the expected time to failure by 50% or decreasing maintenance time by 50%, is provided to illustrate the applicability of MIRCE Science to assets management process.

Emergency Oxygen Provision as a Mechanism of the Motion of an Aircraft through MIRCE Space 

Dr J. Knezevic, MIRCE Akademy, Woodbury Park, Exeter, UK

The paper addresses the provisioning of emergency oxygen as a physical mechanism of the motion of an aircraft through MIRCE Space. [1] Although the malfunctioning of this process is not frequently observed event, their occurrences could cause significant consequences to airline and flying pubic, impacting the functionability performance of commercial aircraft in the air and on the ground [2]. A full understanding of the mechanisms of these actions is essential for the accurate predictions of the functionability performance of functionable system using MIRCE Functionability Equation. Thus, this paper focuses on the observed physical phenomena or human activities related to the aviation industry and some of them are briefly described and analysed in the paper.  Based on the evidence available recommendations for the reduction of the probability of occurrence of negative functionability events of the emergency oxygen provision are presented. 

MIRCE Science Question: Digital or Analogue Visual Displays of Dynamic Information for Humans?

Dr Jezdimir Knezevic, MIRCE Akademy, Exeter, UK

Visual Displays of Dynamic Information (VDDI) represent the interface that machines use to communicate their dynamic functionability state to humans. This paper tries to address the question of the selection between the two main types of VDDI available, digital or analogue, and identify what are some of the most important factors that may affect this selection. In that aid the paper briefly covers how the displays and VDDI are classified, their uses and objectives, the factors that could affect the selection process and finally a comparison between digital and analogue VDDI. The quantitative assessment of the impact of VDDI on the human elements of functionable systems could be determined by making use of MIRCE Functionability Equation. It enables to predict the impact of each feasible options of VDDI on the expected work to be delivered by the system. 

Troubleshooting as a Mechanism of Motion of Functionable System through MIRCE Functionability Filed

Dr Jezdimir Knezevic, The MIRCE Akademy, Woodbury Park, Exeter, EX5 1JJ, UK

The purpose of a paper is to address the troubleshooting, an activity performed by maintainers to identify failed component or module, as a mechanism of the motion of a functionable system through the MIRCE Functionability Field. For effective maintenance troubleshooting, as one of the main drivers of the “speed” of moving through negative functionability state, is essential element of any corrective maintenance task. To successfully perform troubleshooting tasks maintainers must possess both the knowledge and skills to find and fix problems efficiently.  Many years of research have demonstrated that it is much easier to and learn manual skills than troubleshooting skills. The paper clearly demonstrates that troubleshooting is a complex subject as it is driven by both sides of equation, namely system designers that conceive troubleshooting processes and maintenance managers that manage them during the in-service life of functionable systems.

>>>>>>>>>>> Archived Research Papers  <<<<<<<<<<<<<<<<<<<

  • Impact of High Altitude Ultraviolet Radiation on Functionability of Flight Crews,  (read more)
  • Fireless, Burning Smell Driven, Mayday Landings of Commercial Aircraft as a Mechanisms of Motion in MIRCE Mechanics (read more)
  • Emergency Oxygen Provision as a Mechanism of the Motion of an Aircraft Through MIRCE Functionability Field  (read more)
  • Glare as a Mechanism of the Motion of an Aircraft through the MIRCE Functionability Field (read more)
  • Pitot Tube Blockage by Mud-dauber Wasp as a Mechanismof a Motion of an Aircraft through MIRCE Functionability Field (read more)
  • Ice Crystal Icing as a Mechanism of Motion of Aircraft through MIRCE Functionability Field (read more)
  • How Reliable is Reliability Function? (read more)
  • MIRCE Science Based Operational Risk Assessment (read more)
  • Fuel Tank Explosion as a Mechanism of Motion of an Aircraft through MIRCE Functionability Field (read more)
  • Precision Alignment as a Mechanism of the Motion of Rotating Machines through MIRCE Functionability Field
  • Vibration Measuring as a Mechanism of Managing the Motion of a Gearbox through MIRCE Functionability Field
  • Lightning Strike as a Mechanism of a Motion of an Aircraft through MIRCE Functionability Field (read more)
  • Post-Maintenance Flight Test as a Mechanism of Motion in MIRCE Mechanics (read more)
  • Minimum Equipment List as a Mechanism of Motion in MIRCE Mechanics (read more)
  • MIRCE Mechanics Approach to the Analysis of the Cosmic  Radiation Impact on Aviation Reliability(read more)
  • Physical Reality of MIRCE Mechanics- Part 3: Human World (read more)
  • Physical Reality of MIRCE Mechanics- Part 2: Natural World (read more)
  • Physical Reality of MIRCE Mechanics- Part 1: Atomic World (read more)
  • MIRCE Profitability Equation (read more)
  • Increasing Profitability and Reliability Through Failure Management (read more)
  • Determination of Operations Down Time for Group Replacement Policy(read more)
  • Maintainability Design Principles for Aircraft Maintenance Error Avoidance (ream more)
  • Volcanic Ash as a Mechanism of a Motion in MIRCE Mechanics (read more)
  • Troubleshooting as a Mechanism of Motion in MIRCE Mechanics (read more)
  • Determination of Operations Down Time for Group Replacement Maintenance Policy (read more)
  • Aerotoxic Syndrome as a Mirce Mechanics Phenomenon (read more)
  • Aircraft Air-intake Icing on the Ground as a Mechanism of the Motion in MIRCE Mechanics (read more)
  • MIRCE Mechanics Analysis of Functionability of  NASA-contracted Commercial Resupply Services (read more)
  • Aircraft Ground Icing and De-icing Processes as Mechanisms of the Motion in MIRCE Mechanics (read more)
  • Sea Salt Accretion of a Front Windscreen of ATR 72 as Mechanics of Motion trough MIRCE Functionability Field (read more)
  • MIRCE Maintainability Equation (read more)
  • MIRCE Supportability Equation (read more)
  • Mathematical Principles of MIRCE Mechanics (read more)
  • MIRCE Mechanics Philosophy (read more)
  • Space Weather as a Mechanism of the Motion in MIRCE Mechanics (read more)
  • MIRCE Mechanics Analysis of the Flight 1549 (read more)
  • Bird Strike as a Mechanism of the Motion in Mirce Mechanics (read more)
  • Design Impact on Human Error in Maintenance
  • Imperfect Troubleshooting in Commercial Aviation (read more)
  • Cosmic Radiation as a Mechanism of the Motion  in MIRCE Mechanics (read more)
  • Quality of Maintenance; MIRCE Science Axiom 5 (read more)
  • Atoms and Molecules in MIRCE Mechanics Approach to Functionability (read more)
  • Scientific Scale of Reliability 

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