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In a method of controlling vortex breakdown on an aerodynamic surface, a vortex generated by the aerodynamic surface is continually monitored to identify a non-linear region where vortex breakdown occurs. A fluid jet is blown into the non-linear region to displace the vortex breakdown to a target lo

In a method of controlling vortex breakdown on an aerodynamic surface, a vortex generated by the aerodynamic surface is continually monitored to identify a non-linear region where vortex breakdown occurs. A fluid jet is blown into the non-linear region to displace the vortex breakdown to a target location. A blowing parameter for the fluid jet is continually adjusted to continually direct the fluid jet into the vortex breakdown region and preferably ensure maximum positive feedback. The fluid jet is dynamically displaced toward the sensitive spot to maximize the effectiveness of the jet.

대표청구항 ▼

In a method of controlling vortex breakdown on an aerodynamic surface, a vortex generated by the aerodynamic surface is continually monitored to identify a non-linear region where vortex breakdown occurs. A fluid jet is blown into the non-linear region to displace the vortex breakdown to a target lo

In a method of controlling vortex breakdown on an aerodynamic surface, a vortex generated by the aerodynamic surface is continually monitored to identify a non-linear region where vortex breakdown occurs. A fluid jet is blown into the non-linear region to displace the vortex breakdown to a target location. A blowing parameter for the fluid jet is continually adjusted to continually direct the fluid jet into the vortex breakdown region and preferably ensure maximum positive feedback. The fluid jet is dynamically displaced toward the sensitive spot to maximize the effectiveness of the jet. ortex is a non linear function of the distance between said fluid jet and said breakdown region; and a fluid jet generator for generating a fluid jet that can be blown into or sucked out of said non-linear region to displace said vortex breakdown to a target location, said fluid jet generator being continually displaceable along a predetermined path over a surface of said airplane wing to direct said fluid jet into said sensitive spot in said fluid flow field near the vortex breakdown region and thereby control the position of said vortex breakdown region. 19. An arrangement as claimed in claim 18, wherein said fluid jet generator comprises a nozzle moveable along said path. 20. An arrangement as claimed in claim 19, wherein said airplane wing is a delta wing. 21. An arrangement as claimed in claim 18, wherein said fluid jet generator comprises a series of individually controllable nozzles fixed along said path. 22. An arrangement as claimed in claim 18, wherein said path extends along a leading edge of said airplane wing. 23. An arrangement as claimed in claim 18, wherein said path extends along a medial line on said airplane wing. 24. An arrangement as claimed in claim 18, wherein said path extends along an inner portion of said airplane wing adjacent or on a fuselage attached thereto. 25. An arrangement as claimed in claim 18, wherein a blowing parameter of said fluid jet is adjusted in response to said signal to assist in continually directing said fluid jet onto said sensitive spot. 26. An arrangement as claimed in claim 25, wherein said parameter is the blowing mass flow rate. 27. An arrangement as claimed in claim 25, wherein said jet is a synthetic jet and said blowing parameter is the wave number thereof.