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Full-Scale Semi-Span Tests of an Advanced NLF Business Jet Wing
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Abstract
An investigation has been conducted in the NASA Langley Research Center's 30- by 60-Foot Wind Tunnel on a full-scale semi-span model to evaluate and document the low-speed, high-lift characteristics of a business-jet class wing utilizing the HSNLF(1)-0213 airfoil section and a single slotted flap system. In addition to the high-lift studies, evaluations of boundary layer transition effects, the effectiveness of a segmented leading-edge droop for improved stall/spin resistance, and roll control effectiveness with and without flap deflection were made.
The wind-tunnel investigation showed that deployment of a single-slotted trailing-edge flap provided substantial increments in lift. Fixed transition studies indicated no adverse effects on lift and pitching-moment characteristics for either the cruise or landing configuration. Sub-scale roll damping tests also indicated that stall/spin resistance could be enhanced through the use of a properly designed leading-edge droop.
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Citation
Hahne, D., Jordan, F., Davis, P., and Muchmore, C., "Full-Scale Semi-Span Tests of an Advanced NLF Business Jet Wing," SAE Technical Paper 871860, 1987, https://doi.org/10.4271/871860.Also In
References
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