New principles for dynamic aircraft exergy mapping


Berg, F. T. N., Balchin, M. J. and Keogh, P. S., 2013. New principles for dynamic aircraft exergy mapping. AIAA Journal of Aircraft, 50 (4), pp. 1088-1098.

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As fuel efficiency becomes a greater concern in commercial aircraft design and operation it is important to gain a deeper understanding of energy use throughout an aircraft’s systems. To meet this need, a new methodology is being developed that proposes the use of exergy as a metric for mapping the energy flows throughout an aircraft at any required level of detail over a given flight. Exergy allows direct comparison of differing energy types and clearer interpretation of losses and availability. Time-variant application of exergy to vehicles, however, presents complexities, such as large data volumes, temporary exergy storage, exergy exchange between system and mass, and an inconsistent reference state. A software tool prototype is introduced to allow the management of an aircraft exergy map. To describe its use an unmanned aerial vehicle is evaluated. A turbojet study isolates the reference state problem and illustrates the need to use a moving, aircraft-fixed reference state. However, it is shown that this does not eliminate the problem entirely because of the existence of exergy storages


Item Type Articles
CreatorsBerg, F. T. N., Balchin, M. J. and Keogh, P. S.
Related URLs
DepartmentsFaculty of Engineering & Design > Mechanical Engineering
Faculty of Engineering & Design > Electronic & Electrical Engineering
Research CentresCentre for Power Transmission & Motion Control
ID Code37240


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