Thrust-reverser assemblies that utilize active flow-control and systems and methods including the same

摘要

Thrust-reverser assemblies that utilize active flow-control and systems and methods including the same are disclosed herein. The thrust-reverser assemblies define a forward-thrust configuration and a reverse-thrust configuration. The thrust-reverser assemblies include a bullnose fairing that defines a portion of a reverser duct and an active flow-control device. The active flow-control device is located to energize a boundary layer fluid flow within a boundary layer that is adjacent to the bullnose fairing to resist separation of the boundary layer from the bullnose fairing when the thrust-reverser assembly is in the reverse-thrust configuration. The methods include flowing a thrust-reverser fluid stream through the reverser duct to generate the boundary layer and energizing a boundary layer fluid flow within the boundary layer with an active flow-control device to resist separation of the boundary layer from the bullnose fairing.

主权项

1. A thrust-reverser assembly for a jet engine, wherein the thrust-reverser assembly defines a forward-thrust configuration and a reverse-thrust configuration, and further wherein the thrust-reverser assembly is in the reverse-thrust configuration, the assembly comprising:
a bullnose fairing that defines a portion of a reverser duct; a thrust-reverser fluid flow through the reverser duct at an average thrust-reverser fluid flow speed of at least 100 m/s and less than 350 m/s, wherein the thrust-reverser fluid flow includes a boundary layer that is adjacent to the bullnose faring and has a boundary layer fluid flow; and an active flow-control device having a plurality of conduits extending through the bullnose fairing and into the boundary layer located to energize the boundary layer fluid flow such that the boundary layer resists separation from the bullnose fairing when the thrust-reverser fluid flow has the average thrust-reverser fluid flow speed of at least 100 m/s and less than 350 m/s.