Looking at lift with SW Plus

Airfoil contamination is a principal cause of stalls during takeoff maneuvers. However, this can be prevented using the SW Plus stall warning and contamination system developed by Jet Electronics and Technology Inc, a unit ofBF Goodrich Co. SW Plus is capable of performing measurements on the health of the upper wing surface's boundary layer and gives warnings of premature stalling arising from both contamination and high-alpha situations. It can alsogive pre-rotation warnings of contamination and provides in wind-shear recoveryguidance.