US 11,859,578 B2
Thrust reverser system for an aircraft propulsion system
Radhakrishna Chilukuri, San Diego, CA (US); Ashok Babu Saya, Bangalore (IN); and Hussain Mahamed Javed Tapadar, Bengaluru (IN)
Assigned to Rohr, Inc., Chula Vista, CA (US)
Filed by Rohr, Inc., Chula Vista, CA (US)
Filed on Apr. 8, 2022, as Appl. No. 17/716,477.
Claims priority of application No. 202111016590 (IN), filed on Apr. 8, 2021.
Prior Publication US 2022/0325679 A1, Oct. 13, 2022
Int. Cl. F02K 1/72 (2006.01); F02K 1/62 (2006.01)
CPC F02K 1/625 (2013.01) [F02K 1/72 (2013.01); F05D 2240/129 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An assembly for an aircraft propulsion system, comprising:
a forward thrust duct; and
a thrust reverser system comprising a thrust reverser duct, a blocker door assembly and a cascade structure;
the blocker door assembly configured to redirect fluid flowing through the forward thrust duct into the thrust reverser duct;
the cascade structure including a plurality of cascade segments within the thrust reverser duct, the plurality of cascade segments including a first cascade segment and a second cascade segment, the first cascade segment having a first cascade segment flow area and associated with a first lateral sector of the assembly, and the second cascade segment having a second cascade segment flow area and associated with a second lateral sector of the assembly, wherein the second cascade segment flow area is at least 1.2 times the first cascade segment flow area;
the first lateral sector of the assembly having a first axial leakage flow area, a first radial leakage flow area and a first total flow area, and the first total flow area equal to a sum of the first cascade segment flow area, the first axial leakage flow area and the first radial leakage flow area, wherein the first axial leakage flow area is a flow area for axial flow around the blocker door assembly within the first lateral sector of the assembly, and the first radial leakage flow area is a flow area for radial flow around the first cascade segment within the first lateral sector of the assembly; and
the second lateral sector of the assembly having a second axial leakage flow area, a second radial leakage flow area and a second total flow area, and the second total flow area equal to a sum of the second cascade segment flow area, the second axial leakage flow area and the second radial leakage flow area, wherein the second axial leakage flow area is a flow area for axial flow around the blocker door assembly within the second lateral sector of the assembly, the second radial leakage flow area is a flow area for radial flow around the second cascade segment within the second lateral sector of the assembly, and the second total flow area is within ten percent of the first total flow area.