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Alleviation of pitch-up on delta wings using distributed porosity

Published online by Cambridge University Press:  04 July 2016

L. W. Traub ,
B. Moeller  and
S. F. Galls
L. W. Traub
Affiliation:
Aerospace Engineering Department, Texas A&M University, Texas, USA
B. Moeller
Affiliation:
Aerospace Engineering Department, Texas A&M University, Texas, USA
S. F. Galls
Affiliation:
Aerospace Engineering Department, Texas A&M University, Texas, USA
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Abstract

An experimental investigation was undertaken to determine the effectiveness of distributed surface porosity for the alleviation of pitch-up on a delta wing. Tests were undertaken using a 65° sweep delta wing with distributed porosity evaluated at various locations on the wing. Force balance, on and off surface flow visualisation and flow field surveys using a multi-hole probe were undertaken. The data shows that distributed porosity applied along the wing leading edge at the apex is effective in eliminating pitch-up whilst incurring a minimal performance cost. Trailing edge porosity generally degraded performance.

Type
Research Article
Information
The Aeronautical Journal , Volume 103 , Issue 1025 , July 1999 , pp. 339 - 347
Copyright
Copyright © Royal Aeronautical Society 1999 

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