Cascade with varying vane trailing edge thickness

Patent metadata

Field	Value
Publication number	US-2017058828-A1
Application number	US-201514836696-A
Country	US
Kind code	A1
Filing date	Aug 26, 2015
Priority date	Aug 26, 2015
Publication date	Mar 2, 2017
Grant date	—

Abstract

Aspects of the disclosure are directed to a system associated with a thrust reverser of an aircraft, comprising: a plurality of cascade vanes configured in accordance with a substantially arc-tangent profile, where a leading edge of a first of the cascade vanes has a first width, and a trailing edge of the first of the cascade vanes has a second width that is different from the first width.

First claim

1 . A system associated with a thrust reverser of an aircraft, comprising:
a plurality of cascade vanes configured in accordance with a substantially arc-tangent profile, wherein a leading edge of a first of the cascade vanes has a first width, wherein a trailing edge of the first of the cascade vanes has a second width that is less than the first width, wherein a second leading edge of a second of the cascade vanes has a third width, wherein a second trailing edge of the second of the cascade vanes has a fourth width, wherein the second of the cascade vanes is located aft of the first of the cascade vanes, and wherein the fourth width is different from the second width.

2 . (canceled)

3 . The system of claim 1 , wherein the second width is approximately 0.5 times the width of the first width.

4 . The system of claim 1 , wherein the leading edge is associated with an arc-portion of the arc-tangent profile, and wherein the trailing edge is associated with a tangent-portion of the arc-tangent profile.

5 . (canceled)

6 . (canceled)

7 . (canceled)

8 . The system of claim 1 , further comprising:
a blocker door configured to redirect a portion of a bypass flow towards the cascade vanes when the thrust reverser is deployed.

9 . (canceled)

10 . (canceled)

11 . A system for a thrust reverser of an aircraft, comprising:
a cascade structure comprising a plurality of cascade vanes configured in a grate-like structure; each of the cascade vanes comprising a cupped profile including an arcuate portion and a tangent portion, wherein the tangent portion is tangent to the arcuate portion; and each of the cascade vanes comprising a thickness that changes as the respective cascade vane extends, downstream of a minimum flow area location of a vane passage, along the cupped profile; wherein the cascade vanes comprise a first vane and a second vane located downstream of the first vane, and the thickness of a trailing edge of the first vane is different than the thickness of a trailing edge of the second vane.

12 . The system of claim 1 , wherein the thickness of the first vane changes as the first vane extends along the tangent portion.

Assignees

• Rohr Inc

Inventors

• Dong Landy

Classifications

• F02K1/70 Primary

  using thrust reverser flaps or doors mounted on the fan housing · CPC title

• F02K1/605

  the aft end of the engine cowling being movable to uncover openings for the reversed flow · CPC title

• F02K1/625 Primary

  the aft end of the engine cowling being movable to uncover openings for the reversed flow · CPC title

• F05D2240/129

  Cascades, i.e. assemblies of similar profiles acting in parallel · CPC title