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Alleviation of pitch-up on delta wings using distributed porosity

  • L. W. Traub (a1), B. Moeller (a1) and S. F. Galls (a1)

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.

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Alleviation of pitch-up on delta wings using distributed porosity

  • L. W. Traub (a1), B. Moeller (a1) and S. F. Galls (a1)

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