Environmental defense shield

摘要

An environmental defense shield includes symmetric airfoil-shaped vanes contributing to and positioned around a plenum space and positioned in front of a turbine engine. An annular band stiffener is set into the vanes, which projects forward in a diminishing size, the vanes merging together to create or attaching to a solid nose. The environmental defense shield serves to protect the engine from debris while also smoothing airflow into the engine.

主权项

1. An environmental defense shield for a turbine engine on an aircraft, the environmental defense shield comprising a plurality of aerodynamic vanes, wherein each of the aerodynamic vanes comprises a leading edge and a trailing edge wherein the leading edge and trailing edge are not equidistant at all points along the length of each of the plurality of aerodynamic vanes, and further wherein each of the plurality of aerodynamic vanes comprises:
a. a forward end; b. a rearward end; c. a first section at the forward end wherein the trailing edge at the first section comprises an arcuate, concave shape wherein a perpendicular distance between the leading edge and the trailing edge of each of the plurality of aerodynamic vanes at the forward end is larger than at any other position on the first section; d. a second section between the forward end and the rearward end, wherein a perpendicular distance between the leading edge and the trailing edge at the first section is larger than a perpendicular distance between the leading edge and the trailing edge at the second section; and e. a third section at the rearward end wherein the trailing edge at the third section comprises an arcuate, convex shape wherein a perpendicular distance between the leading edge and the trailing edge at the rearward end is larger than a perpendicular distance at at least one other position on the third section.