The first-stage nozzle vane
outer platform begins at the gas generator exit.
All the tools required for the design of the nozzles are associated with the "nozzle-object" The product structure tree is refined by defining nozzle details such as the film holes and internal cooling passages for creating the heat transfer model of a nozzle vane cross section.
It is suitable for meshing objects that lend themselves to extrusion, such as nozzle vanes, bucket airfoils, and fan blades.
This control is generally performed using variable nozzle vanes
(VN) that can increase the exhaust gas recirculation (EGR) rate to restrict the generation of nitrogen oxides (NOx), as well as improve both dynamic response and engine torque at low speeds (i.e., low end torque).
Engine nozzle vanes
were added to the F/A-18 High AOA Research Vehicle (HARV) to ensure that the plane could be recovered from post-stall flight.