Jet nozzle effective area control system for gas turbine engine

A jet nozzle for a gas turbine engine for an aircraft, the jet nozzle comprising:

• at least one inflatable diaphragm configured to be disposed along an outer bypass section wall of the gas turbine engine;
• and
• a plurality of panels configured to be hinged along the outer bypass section wall of the gas turbine engine adjacent to the at least one inflatable diaphragm,
• wherein each panel from the plurality of panels is configured to seat within a recess defined within the outer bypass section wall when the plurality of panels is retracted from the jet nozzle, and
• wherein the at least one inflatable diaphragm is further configured to:
• couple with a fluid pressure sensor configured to measure a fluid pressure within the at least one inflatable diaphragm;
• couple with an inlet valve configured to control a pressurized flow of a fluid into the at least one inflatable diaphragm in response to a command from a controller;
• and
• couple with a release valve configured to control a release of the fluid from within the at least one inflatable diaphragm in response to a command from the controller.