Embedded dielectric structures for active flow control plasma sources
A flow control, dielectric technology, applied in the field of flow control, which can solve problems such as damage, instability, difficulty, etc.
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example 1
[0022] This example describes illustrative DBD installations such as figure 1 shown.
[0023] figure 1 is a schematic cross-sectional view of a DBD device, generally indicated at 10 , embedded within an aerodynamic or airfoil structure 12 . The aerodynamic structure 12 may be a three-dimensional structure and figure 1 extending in the direction of the plane. Examples of aerodynamic structures include, but are not limited to: wings of an aircraft, helicopter or rotor blades, or other control surfaces such as flaps, slats, ailerons, spoilers, winglets, landing gear mounts, or other structure. The DBD device 10 may include a dielectric 14 , exposed electrodes 16 and buried electrodes 18 .
[0024] Dielectric 14 may be any material having suitable electrical and mechanical properties for the purpose. Dielectric 14 may be made of a machinable ceramic material such as Macor TM Machinable glass-ceramics and similar types of machinable ceramic material(s) and / or alumina and sim...
example 2
[0043] This example describes an illustrative embodiment of a DBD device that can be used as a plasma source with active gas flow control, such as figure 2 and image 3 shown in .
[0044] figure 2 is an exploded view of an exemplary DBD device, generally indicated at 100 , and an embodiment of an aerodynamic structure 102 with a recess 104 in the structure configured to receive the DBD device.
[0045] Aerodynamic Structures 102 in figure 2 is shown having the shape of an airfoil. During flight operations, air may move through the aerodynamic structure generally in the direction indicated by arrow 106 . The notch 104 may be positioned near the leading edge 108 of the airfoil 102 . Recess 104 may be sized and configured to receive component parts of DBD device 100 .
[0046] The DBD device 100 may include a rigid dielectric housing 110 , exposed electrodes 112 and buried electrodes 114 . The DBD device 100 may be configured to attach to the airfoil structure 102 by a...
example 3
[0053] This example describes possible installation orientations of DBD units on various exemplary aircraft, such as Figure 4 and Figure 5 shown.
[0054] Figure 4 is a perspective view of an exemplary aircraft, specifically a helicopter, generally indicated at 200 . Aircraft 200 may include aerodynamic structures such as one or more main rotor blades 202 , one or more tail rotor blades 204 , empennage 206 , or one or more wings 208 , among others. Airflow over any of these aerodynamic structures can be improved by adding an active airflow control device such as DBD device 10 or 100 .
[0055] For example, a DBD device may be embedded within main rotor blade 202 near leading edge 210 of the rotor blade. A DBD device such as 10 or 100 may have a length that is tailored to fit the length of the aerodynamic structure in which the device may be embedded. For example, a single length DBD device may be disposed within rotor blade 202 along a majority of the length of the bla...
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