Abstract Specific power, defined as the ratio of output power to total mass, is one generally accepted figures merit for electrical machines. Given growing interest in electric aircraft, developers are trying demonstrate a high value this indicator their products. This paper provides an overview projects machines with density, use which promising aircraft various dimensions. Projects University...

Composite structures can lower the weight of an airliner significantly. The increased production cost, however, requires the application of cost-effective design strategies. Hence, a comparative value is required which is used for the evaluation of a design solution in terms of cost and weight. The direct operating cost (DOC) can be used as this comparative value; it captures all costs that ari...

During the design of new technical systems, their manufacturing tolerances (i.e. system parameter uncertainties) should be determined basically by working requirements of the system and technological possibilities of the manufacturers. Therefore the determination of manufacturing tolerances can be a very important and difficult task. It is possible that system output parameter values are inadeq...

By now there still exists a major gap in the seamless information integration between product design and manufacturing processes. The reasons for this gap are manifold, however the incompatibility between the modeling philosophy used in the product design and for product manufacturing as well as the inconsistency in the data models and formats used in both areas are among the most obvious. Brid...

The Center for Electronic Commerce (CEC) embodies over fourteen years of experience in applying agents to industrial problems. We have found such a fit in three areas: coordination of industrial designers, simulation and modeling of complex products and processes, and scheduling and control of production systems. This presentation outlines several trends in modern manufacturing, describes how t...

Ajit has over 10 years of experience in manufacturing operations and consulting. His functional expertise comprises Industrial Operations, Supply Chain, and Quality and Manufacturing Analytics. He has successfully executed various cost saving, process improvement and business intelligence (BI) projects for leading manufacturing companies. Saurabh has over three years of industry experience in t...

Carbon fibers/polymer matrix composites tend to be used more widely instead of aluminum structures in the aircraft and aerospace industry. There are many reasons that explain the increasing interest for this class of composites due to the lightweight, high strength, high stiffness, good fatigue life, excellent corrosion resistance and low cost manufacturing. Moreover, a considerable effort is p...

Batch-wise production is found in many industries. A good example of production systems which process products batch-wise are the ovens found in aircraft industry and in semiconductor manufacturing. These systems mostly consist of multiple machines of different types, given the range and volumes of products which have to be handled. Building on earlier research in aircraft industry, where the p...

Composite materials have been playing a major role in modern aircraft design due to their high stiffness and strength to weight ratio. While the advantages of composite structures over their metallic counterparts is significant, it is possible to improve even further on the benefits offered by traditional composites through the use of novel composite manufacturing methods. One such method is au...

Determining manufacturing cost and feasibility of different product design concepts is crucial the trade-off process. It is therefore important to have tools that can determine these aspects at an early stage of the design process. In this paper a framework is proposed that automates these analyses for aircraft movables. Basis of the framework is a model generator that generates the geometric a...