Active Aircraft Pylon Noise Control System

An aircraft system comprising:

• a fuselage;
• a wing carried by the fuselage;
• an engine system comprising:
• an engine formed above or beneath the wing,
• a nacelle housing the engine therein, and
• an engine exhaust nozzle system formed around the engine, and comprising:
• a fan nozzle configured to receive a fan flow from a fan disposed adjacent to an engine disposed above an airframe surface of the aircraft;
• a core nozzle disposed within the fan nozzle and configured to receive an engine core flow;
• a pylon structure connected to the fan nozzle and structurally attached with an airframe surface to secure the engine system to the aircraft;
• and
• an active pylon noise control system comprising:
• at least one aperture formed on the pylon structure to supply a gas or fluid therethrough;
• an intake portion attached to the pylon structure and configured to intake the gas or fluid;
• a regulator connected with the intake portion via a plurality of pipes and configured to regulate a pressure of the gas or fluid;
• a plenum chamber formed within the pylon structure and connected with the regulator and configured to receive the gas or fluid as regulated by the regulator;
• a plurality of injectors in communication with the plenum chamber, and configured to actively inject the gas or fluid through the at least one aperture of the pylon structure.

A method for injecting a gas or fluid into a pylon structure of an aircraft, the method comprising:

• inputting a gas or fluid in the pylon structure;
• controlling a pressure of a flow of the gas or fluid input in the pylon structure;
• and
• selectively injecting the gas or fluid through at least one aperture formed on the pylon structure.