A fluidic system is disclosed. The system comprises a plurality of fluidic oscillatory actuators, and at least one synchronization conduit connecting two or more of the actuators such as to effect synchronization between oscillations in the two or more connected actuators.
대표청구항▼
1. A fluidic system, comprising: a plurality of fluidic oscillatory actuators, each actuator having a joining channel, a pair of control ports at opposite sides of said joining channel, and a feedback conduit directly connecting said control ports of said pair to each other; anda plurality of extern
1. A fluidic system, comprising: a plurality of fluidic oscillatory actuators, each actuator having a joining channel, a pair of control ports at opposite sides of said joining channel, and a feedback conduit directly connecting said control ports of said pair to each other; anda plurality of external synchronization conduits connecting at least two of said actuators, wherein for at least two of said external synchronization conduits, each conduit directly connects control ports that are on the same side of a respective joining channel. 2. The system according to claim 1, wherein said synchronization conduits are effective to provide said synchronization devoid of any moving non-fluidic parts. 3. The system according to claim 1, wherein at least one of said actuator is a suction and oscillatory blowing actuator (SaOB). 4. The system according to claim 1, wherein said synchronization conduits are selected to control phase lag among said actuators. 5. The system according to claim 1, wherein each control port of each oscillatory actuator is respectively connected to at least two control ports of at least two another oscillatory actuators. 6. The system according to claim 1, wherein each control port of each oscillatory actuator is connected to only one control port of another oscillatory actuator. 7. An active separation control system, attachable to the rear end of a vehicle and comprising the system according to claim 1. 8. The system according to claim 7, further comprising a flexible member, wherein said fluidic oscillatory actuators and said at least one synchronization conduit are mounted on said flexible member, and wherein the system is mountable on a rotatable door of said vehicle such that said flexible member assumes a different shape when said door is closed than when said door is open. 9. The system according to claim 7, wherein said vehicle is a truck trailer. 10. The system according to claim 7, wherein said vehicle is an aeronautical vehicle. 11. A vehicle, comprising the system according to claim 7. 12. An active separation control system, attachable to an object selected from the group consisting of an airfoil, a wing or a fuselage, and comprising the system according to claim 1. 13. A method of synchronizing fluidic oscillatory actuators, each having a joining channel and a pair of control ports at opposite sides of the joining channel, the method comprising: establishing fluid flow within a plurality of external synchronization conduits connecting at least two actuators, wherein for at least two of said external synchronization conduits, each conduit directly connects control ports that are on the same side of a respective joining channel; andfor at least one of said actuators, establishing a feedback fluid flow between control ports at opposite sides of a respective joining channel of said actuator. 14. The method of claim 13, wherein each actuator is connected by a respective synchronization conduit to all other actuators in said array. 15. The method according to claim 13, wherein said synchronization conduit is effective to provide said synchronization devoid of any moving non-fluidic parts. 16. The method according to claim 13, wherein said establishing fluid flow comprises increasing a phase lag among said actuators. 17. The method according to claim 13, being executed for actively controlling the flow at a fluid boundary layer. 18. The method according to claim 13, being executed for actively controlling the flow over a bluff body. 19. The method according to claim 13, being executed for actively controlling wake flow. 20. The method according to claim 13, being executed for actively controlling lift. 21. The method according to claim 13, being executed for actively controlling moment acting on a fuselage, a rocket or an aircraft. 22. The method according to claim 13, being executed for actively reducing drag. 23. The system according to claim 1, wherein each of said external synchronization conduits directly connects control ports that are on the same side of a respective joining channel.
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이 특허에 인용된 특허 (3)
Raghu, Surya, Method and apparatus for aerodynamic flow control using compact high-frequency fluidic actuator arrays.
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