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Functional jet-engine component: concept and evaluation
2002 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Today customers want to have added value when buying new products. To obtain added value the product has to give the customer something positive that was not expected. The question for companies becomes to identify the real customer need for added value and then bring these into properties and functions to offer the customers. Volvo Aero Corporation has recognized the importance of added value and tries to find their way to a successful solution. “By creating value for our customers, we create value for our shareholders.” One of the Volvo Group’s mission statements In this thesis it is investigated if there are possibilities to work with a functional approach instead of traditional design principles and product definitions. Another issue is to see what properties must be represented in a concept design model in order to evaluate concepts in consideration of added value. One way to increase the added value is to increase the contents of the product. Besides the contents of the product shorter lead-time and greater flexibility can be a way for increasing the added value. Contents of the product do not only need to be more or less hardware features, it can consist of leasing offers and services like education, support and maintenance. Companies need to offer all this to be successful and create a win-win situation. Taking a functional perspective on products makes it is possible to think wider in the creative concept phase. A functional break down divides the problem into smaller areas and makes it easier to find new types of means (solutions) to solve the function requirement. When the means realize the functions it is also easier to see new means or change old on existing concepts. The functional way of thinking can be applied on both hardware and service. A functional brake down is described here for an intermediate case (IMC), a component in a jet-engine. For a functional break down it is important to see the problem from an abstract point of view and then formulate the problem. It is then possible to transform the problem formulation to an overall function that can be broken down into sub-functions. The IMC is a static component and is a part of the “skeleton” in a jet engine. An abstract problem formulation for the IMC can be: “Support surrounding parts, keep two air flows separated and transfer the thrust from the engine to the airframe.” Abstract formulation of the Intermediate case tasks In this thesis a functional break down is used to define a modular representation of the IMC. The modular representation can then be used in the creation of the product structure. Besides the hardware it is useful to describe properties of product that match different types of costs, maintenance requirements, weight, structural stiffness, endurance etc. in a concept design model. The properties are used to do the important evaluation process for picking the best concept.

Place, publisher, year, edition, pages
Keyword [en]
Technology, Intermediate case, IMC, jet engine, Functional, perspective, Functional approach, Added value, Functional, breakdown, mervärde, funktionellt mellanhus
Keyword [sv]
URN: urn:nbn:se:ltu:diva-43252ISRN: LTU-EX--02/333--SELocal ID: 121932b9-0d97-4939-9b26-14caba8614bdOAI: diva2:1016482
Subject / course
Student thesis, at least 30 credits
Educational program
Mechanical Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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