Aircraft wing leading edge and slot - US2755039A

When a leading edge slot is opened, the stalling speed will: increase increase decrease decrease remain the same but will occur at a higher angle of attack

Leading edge slats prevent the stall up to approximately 30 degrees incidence by picking up a lot of air from below, where the slot is large

horse 89 slot leading edge, move forward to create a gap between the slat and wing, allowing smoother airflow and delaying airflow separation

tangkas slot When a leading edge slot is opened, the stalling speed will: increase increase decrease decrease remain the same but will occur at a higher angle of attack