초록 ▼

A pneumatic aerodynamic control surface is described for an aircraft having a region of upwash ahead of a powered-lift or high-lift wing, the control surface comprising blown engine nacelles immersed in the upwash region, and capable of generating moments about all three axes of the aircraft without

A pneumatic aerodynamic control surface is described for an aircraft having a region of upwash ahead of a powered-lift or high-lift wing, the control surface comprising blown engine nacelles immersed in the upwash region, and capable of generating moments about all three axes of the aircraft without any external moving parts.

대표청구항 ▼

In combination with an STOL aircraft having a highlift wing attached to a fuselage and at least one near circular aircraft component positioned on the aircraft ahead of its center of gravity such that at least a portion of each side surface of the near circular aircraft component is immersed in and

In combination with an STOL aircraft having a highlift wing attached to a fuselage and at least one near circular aircraft component positioned on the aircraft ahead of its center of gravity such that at least a portion of each side surface of the near circular aircraft component is immersed in and wetted by the large upwash of fluid flow ahead of the lifting wing created during STOL operation of the aircraft, and aerodynamic control surface comprising: (a) a source of compressed fluid; (b) at least one fluid discharge slot on each wetted side surface of the near circular aircraft component for discharging the compressed fluid substantially in the direction of local fluid flow and tangentially to the upwash of fluid flow in the vicinity of said fluid discharge slot; (c) a mass flow control means for controlling the flow rate of the fluid discharged from said fluid discharge slots; and (d) a fluid flow selection means for selectively operating each fluid discharge slot independently of the other.