Jet flow nozzle and jet engine

摘要

The present invention relates to a jet engine including protrusions (1) for preventing the increase of the velocity gradient of a fluid in a mixed layer of a jet flow and an external air flow by bending the mixed layer, when viewed from the side of a jet flow injected.

主权项

1. A jet flow nozzle which is mounted on a jet engine and injects a jet flow to an outside, the jet flow nozzle comprising:
a nozzle outlet end that injects the jet flow, wherein the jet flow comprises a fan bypass airflow and a core exhaust airflow; protrusions that are provided around the nozzle outlet end, wherein the protrusions have a triangular pyramid shape that protrudes radially toward a center of the nozzle outlet end, wherein each protrusions has a height of 2.5 to 3.0% of a diameter of the nozzle outlet end.