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An experimental and computational investigation of ground effect lift loss for single jet impingement

Published online by Cambridge University Press:  04 July 2016

Dan N. Ing  and
Xin Zhang
Dan N. Ing
Affiliation:
Logico Systems
Xin Zhang
Affiliation:
University of Southampton
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Abstract

An investigation was carried out to study the parameters affecting single-jet ground-effect hover lift loss and to identify the cause(s) behind the large discrepancies in lift loss between the experiments of Wyatt of RAE Bedford and Corsiglia et alof Nasa Ames. The cause of the discrepancies was traced to a single geometrical parameter: baffle plate edge geometry, which significantly affected the flow separation underneath the plate. In contrast, the out-of-ground lift loss is insensitive to the edge geometry, but can be significantly affected by room size restriction. The investigations have highlighted the importance of accurately representing the edge geometry in ground effect testing of Vstol aircraft, and the importance of the test environment when conducting out-of-ground hover experiments.

Type
Research Article
Information
The Aeronautical Journal , Volume 98 , Issue 974 , April 1994 , pp. 127 - 136
Copyright
Copyright © Royal Aeronautical Society 1994 

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