Aviation Dictionary

On this page you will find a searchable and comprehensive alphabetical list of aviation terms. You can help us make it the most comprehensive list in the world. If we have missed anything, click on the ‘send us your word’ button to send us your word, acronym or definition and we will consider adding it to our dictionary.

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Aspect Ratio (AR)

A ratio between the wing span and wing chord. A high aspect ratio wing will have a high lift value and a lower drag value compared to a lower aspect ratio wing which will have a lower lift and higher drag ratio.

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