Wing comprising a leading edge having means for preventing the deposition of residues
A wing comprising a leading edge composed of a skin transparent to microwaves, magnetrons implanted under the skin and arranged in rows and in columns alongside one another, between two successive rows of magnetrons, a discharge row successively comprising an electrode and a ground electrode, where each electrode passes through the skin and where each ground electrode is under the skin.
1. A wing of an aircraft, said wing comprising:
a leading edge composed of a skin transparent to microwaves,
a plurality of magnetrons which are implanted under the skin and arranged in rows and in columns alongside one another,
at least one power module provided to electrically power said plurality of magnetrons,
between two successive rows of magnetrons, a discharge row successively comprising an electrode and a ground electrode, where each electrode passes through the skin and where each ground electrode is under the skin,
for each group composed of an electrode of a discharge row and of at least one ground electrode of an adjacent discharge row, a voltage generator connected between said electrode and said at least one ground electrode.
2. The wing according to claim 1 , wherein the skin is two-layer and comprises a flexible outer layer and an inner layer which ensures its strength.
3. The wing according to claim 2 , wherein the leading edge comprises a displacement system provided to displace the leading edge upwards and downwards.
4. The wing according to claim 2 , wherein the inner layer is pierced by a window in which is housed the ground electrode, wherein the ground electrode comprises an outer plate, an inner plate, each having dielectric properties, and an electrically conductive plate, secured to an electrically conductive rod and sandwiched between the outer plate and the inner plate, and two bolts sandwiching the outer plate, the plate and the inner plate, and the inner layer, and wherein the inner plate is pierced by a bore into which the rod passes to be connected to the voltage generator.
5. The wing according to claim 2 , wherein the inner layer has a void open towards the interior of the leading edge and in which is housed the ground electrode, wherein the ground electrode comprises a plate having dielectric properties and an electrically conductive plate, secured to an electrically conductive rod and sandwiched between the bottom of the void and the plate, and wherein the plate is pierced by a bore into which the rod passes to be connected to the voltage generator.
6. The wing according to claim 2 , wherein the outer layer has a hole, the inner layer has a through-bore with a countersink on the side of its outer face, the electrode is a rod with a flat head where the flat head is accommodated in the hole of the outer layer, and the wing comprises:
a main stem having a threaded rod passing through the bore and a countersunk head accommodated in the countersink, and where an interior of the main stem is tapped,
a secondary stem which is accommodated in the main stem, where an outer face is threaded to cooperate with the inner tapping of the main stem, and where the secondary stem extends beyond the main stem on a side opposite a head of the main stem,
a first nut which is screwed onto an end of the secondary stem which extends beyond the main stem and which bears against the main stem,
wherein an interior of the secondary stem accommodates the rod of the electrode which extends beyond the secondary stem beyond the first nut to be connected to the voltage generator.
7. The wing according to claim 6 , further comprising:
for each magnetron, a waveguide fixed inside the leading edge, produced as an outwardly-open cup and whose bottom bears an emitting antenna of the magnetron oriented towards an opening of the cup which has a flange,
a first clamping nut which is screwed onto the threaded rod of the main stem, between the first nut and the inner layer, and bears against the inner layer,
a second clamping nut which is screwed onto the threaded rod of the main stem, between the first nut and the first clamping nut, and is tightened against the first clamping nut sandwiching the flange.
8. The wing according to claim 2 , further comprising, for each magnetron, a waveguide fixed inside the leading edge, produced as an outwardly-open cup and whose bottom bears an emitting antenna of the magnetron oriented towards an opening of the cup which has a flange glued to an inner face of the inner layer.
9. The wing according to claim 2 , further comprising a waveguide fixed to an inner face of the inner layer, produced as a metal lattice which is passed through by an emitting antenna of the magnetron which is oriented outwards.
10. An aircraft comprising at least one wing according to claim 1 .