High flow plug nozzle apparatus and method of using the same
AssigneeAerion Intellectual Property Management Corporation
InventorJames D. Chase
Life of this patent
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Abstract
The present disclosure relates to a method of operating a supersonic aircraft comprising the steps of: at takeoff, positioning a slidable plug-cowl assembly disposed within a nozzle and behind an engine in an aft position such that a front surface of a plug is aft of an exit plane of a cowl, to thereby reduce noise during takeoff and maintain engine efficiency; and after takeoff, re-positioning the slidable plug-cowl assembly to a forward position such that the front surface of the plug is not disposed aft the exit plane of the cowl.
Claims12
A method of operating a supersonic aircraft comprising the steps of:
- at takeoff, positioning a slidable plug-cowl assembly disposed within a nozzle and behind an engine in an aft position such that a maximum cross-sectional area of a plug is aft of an exit plane of a cowl, to thereby reduce noise during takeoff and maintain engine efficiency;
- and
- after takeoff, re-positioning the slidable plug-cowl assembly to a forward position such that a front surface of the plug is not disposed aft the exit plane of the cowl.
An apparatus for a supersonic aircraft engine assembly that emits airflow into the atmosphere for propulsion, the apparatus comprising:
- an engine that emits airflow for propulsion;
- an engine duct disposed aft of the engine that confines the airflow;
- a propulsion nozzle cowl disposed aft of the engine duct that receives a confined airflow and emits the confined airflow into the atmosphere;
- and
- a plug disposed within the propulsion nozzle cowl;
- and
- wherein the plug and the propulsion nozzle cowl are slidable with respect to each other, such that in a first position a maximum cross-sectional area of a plug is aft of an exit plane of a cowl and in a second position a front surface of the plug is not disposed aft the exit plane of the cowl.
Dependencies are inferred from the claim text.