NASA NASA-TP-3133
NASA NASA-TP-3133 1991-JAN-01 Full-scale semspan tests of a busness-jet wng wth a natural lamnar flow arfol
NASA NASA-TP-3133 1991-JAN-01 Full-scale semspan tests of a busness-jet wng wth a natural lamnar flow arfol
A full-scale semispan model was investigated to evaluate and document the low-speed, high-lift characteristics of a business-jet class wing that utilized the HSNLF(1)-0213 airfoil section and a single-slotted flap system. Also, boundary-layer transition effects were examined, a segmented leading-edge droop for improved stall/spin resistance was studied, and two roll-controlled devices were evaluated. The wind-tunnel investigation showed that deployment of single-slotted, trailing-edge flap was effective in providing substantial increments in lift required for takeoff and landing performance. Fixed-transition studies to investigate premature tripping of the boundary layer indicated no adverse effects in lift and pitching-moment characteristics for either the cruise or landing configuration. The full-scale results also suggested the need to further optimize the leading-edge droop design that was developed in the subscale tests.