Elucidation of aircraft energy use through time-variant exergy analysis

Frederick Berg, Martin Balchin, Patrick Keogh

Research output: Contribution to conferencePaperpeer-review


Increases in fuel costs and environmental concerns have in recent years heightened the importance of fuel efficiency as a design consideration in vehicles, especially aircraft. For this reason, a greater understanding of the energy consumption of vehicles is needed, both for design and operational decisions. Exergy, a measure of available work in an imbalance of state, allows systems to be compared on an equal basis with losses and waste being equated to fuel costs. Vehicles and especially aircraft do not operate in steady state as do industrial plants, the traditional subject of exergy analysis. While some analysis of aircraft has been performed in the literature, time-variance has not been addressed, leading to a lack of detail and only very broad conclusions. It is proposed that in order to fully understand aircraft energy use, a fully time-variant analysis must be performed. It is the aim of this paper to discuss the first challenges encountered in designing a methodology to permit this and to describe the methods used to address these issues.
Original languageEnglish
Publication statusPublished - 18 Oct 2011
EventSAE 2011 AeroTech Congress & Exhibition - Toulouse, France
Duration: 18 Oct 201121 Oct 2011


ConferenceSAE 2011 AeroTech Congress & Exhibition


Dive into the research topics of 'Elucidation of aircraft energy use through time-variant exergy analysis'. Together they form a unique fingerprint.

Cite this