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Assessment of passive porosity with free and fixed separation on a tangent ogive forebody (1992)

Banks, Daniel W. ; Bauer, Steven X. S. ; Wood, Richard M.

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Publication Date: 2019-07-13

Description: Subsonic wind tunnel tests were performed on solid and porous (22 percent) 5.0-caliber forebody models to assess the effect of free and fixed cross-flow separation on the effectiveness of passive porosity. The effectiveness of passive porosity to control the local pressure loading for forced cross-flow separation is found to be similar to that observed for the free cross-flow separation condition. It is also found that the effectiveness of passive porosity is significantly enhanced in the presence of large positive pressures on the porous surface.

Keywords: AIRCRAFT STABILITY AND CONTROL

Type: AIAA PAPER 92-4494 , AIAA Atmospheric Flight Mechanics Conference; Aug 10, 1992 - Aug 12, 1992; Hilton Head Island, SC; United States

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