scholarly journals METHODOLOGICAL BASIS FOR ESTIMATING THE LIFE CYCLE COST OF AIRCRAFT ENGINE, TAKING INTO ACCOUNT THE ATTENDANT RISKS

2020 ◽  
pp. 121-128
Author(s):  
E. A. Ozdoeva ◽  
O. A. Smolyakov
Keyword(s):  
Risk Assessment ◽  
Life Cycle ◽  
Life Cycle Cost ◽  
Aircraft Engine ◽  
Economic Research ◽  
Typical Structure ◽  
Stage Of Development ◽  
The Creation ◽  
Risk Assessment Methodology ◽  
Engine Development

The formation and development of the main areas of technical and economic research in the field of aircraft engine building have been considered. A typical structure of the life cycle cost of an aircraft engine has been presented and typical tasks in the field of technical and economic efficiency, solved at different stages of the cycle, have been described. Also the method used to solve these problems at the stage of development work on the creation of the engine has been considered. The purpose of the study is to develop a risk assessment methodology for the creation of an aircraft engine, as well as its software implementation with subsequent integration into an existing design product. At this stage, it is necessary to describe clearly the algorithm that will be the basis for the risk assessment of the aircraft engine development.

The Development of Anomaly Distributions for Machined Holes in Aircraft Engine Rotors

2006 ◽  
Author(s):  
Richard Corran ◽  
Michael Gorelik ◽  
Darryl Lehmann ◽  
Stephane Mosset
Keyword(s):  
Risk Assessment ◽  
Relative Risk ◽  
Damage Tolerance ◽  
Probabilistic Approach ◽  
Aircraft Engine ◽  
Design Strategy ◽  
Assessment Methodology ◽  
Relative Risk Assessment ◽  
Risk Assessment Methodology ◽  
Engine Rotors

The Aerospace Industries Association (AIA) Rotor Integrity Sub-Committee (RISC) has proposed an enhanced damage tolerance design strategy for critical rotating parts intended to reduce the rate of uncontained rotor events. Building upon the industry committee’s experience in developing a probabilistic relative risk assessment methodology for hard alpha anomalies in titanium rotors, a similar probabilistic approach has been proposed for induced anomalies along machined hole surfaces in engine rotors. Key inputs to this strategy are the development of a surface anomaly distribution for machined holes and the benchmark of design target risk (DTR). The DTR is an FAA/industry agreed upon design target value of relative risk against which the results of the probabilistic risk assessment are compared.

scholarly journals EAGLE: An Interactive Engine/Airframe Life Cycle Cost Model

1982 ◽  
Author(s):  
E. J. Reed ◽  
R. R. Horton ◽  
J. B. Fyfe
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Development Process ◽  
Cost Model ◽  
Aircraft Engine ◽  
Preliminary Design ◽  
Weapon System ◽  
Technology Evaluation ◽  
Advance Technology ◽  
Design Decisions

A major portion of the Life Cycle Cost (LCC) of a modern high technology weapon system is determined by design decisions made very early in the development process. Many of these decisions are so fundamental that later changes become impractical. As a result, a usage-sensitive, interactive aircraft engine LCC model has been developed by Pratt & Whitney Aircraft to evaluate and prioritize potential technology candidates during conceptual/preliminary design. This paper discusses the development of the EAGLE (Engine/Airframe Generalized LCC Evaluator) model, its validation using results from the Advance Technology Engine Studies (ATES), and includes an example engine technology evaluation.

scholarly journals Key aerodynamic technologies for aircraft engine nacelles

2006 ◽  
Vol 110 (1107) ◽  
pp. 265-288 ◽  
Author(s):  
S. Raghunathan ◽  
E. Benard ◽  
J. K. Watterson ◽  
R. K. Cooper ◽  
R. Curran ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Life Cycle ◽  
Life Cycle Cost ◽  
Aircraft Design ◽  
Aircraft Engine ◽  
Customer Requirements ◽  
Next Generation ◽  
Pressure Relief ◽  
Transport Aircraft ◽  
Conducting Research

AbstractCustomer requirements and vision in aerospace dictate that the next generation of civil transport aircraft should have a strong emphasis on increased safety, reduced environmental impact and reduced cost without sacrificing performance. In this context, the School of Mechanical and Aerospace Engineering at the Queen’s University of Belfast and Bombardier have, in recent years, been conducting research into some of the key aerodynamic technologies for the next generation of aircraft engine nacelles. Investigations have been performed into anti-icing technology, efficient thrust reversal, engine fire zone safety, life cycle cost and integration of the foregoing with other considerations in engine and aircraft design. A unique correlation for heat transfer in an anti-icing system has been developed. The effect of normal vibration on heat transfer in such systems has been found to be negligible. It has been shown that carefully designed natural blockage thrust reversers without a cascade can reduce aircraft weight with only a small sacrifice in the reversed thrust. A good understanding of the pressure relief doors and techniques to improve the performance of such doors have been developed. Trade off studies between aerodynamics, manufacturing and assembly of engine nacelles have shown the potential for a significant reduction in life cycle cost.

scholarly journals Life Cycle Cost as a Propulsion System Design Consideration

1977 ◽  
Author(s):  
C. E. Curry
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
System Development ◽  
Aircraft Engine ◽  
Propulsion System ◽  
Development Programs ◽  
Math Model ◽  
Support Costs ◽  
Heavy Lift ◽  
Turboshaft Engine

This paper deals with applying Life Cycle Cost (LCC) and Design To Cost (DTC) principles to aircraft engine programs. The dynamic driving elements of LCC are identified with an example of direct application to a deterministic computer model. This model was used as the principal tool to project operating and support costs for the XT701 turboshaft engine in conjunction with the U.S. Army Heavy Lift Helicopter Development that featured a specific DTC-related award fee in the contract. The overall methodology of LCC and DTC supported by the math model earned a Superior evaluation with an unprecedented 100 percent award fee for this kind of application. The customer audit, in support of the performance award, supports the conclusion that computer models can be used to enhance the LCC aspects of propulsion system development programs.

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