US 12,292,014 B2
Gas turbine engine exhaust chevrons
Johann Steven Schrell, San Diego, CA (US); Jihad Ramlaoui, Chula Vista, CA (US); Brian A. Sherman, Chula Vista, CA (US); and Andrew John Strutt, San Diego, CA (US)
Assigned to ROHR, INC., Chula Vista, CA (US)
Filed by Rohr, Inc., Chula Vista, CA (US)
Filed on Dec. 21, 2020, as Appl. No. 17/129,612.
Prior Publication US 2022/0195960 A1, Jun. 23, 2022
Int. Cl. F02K 1/48 (2006.01); F02K 1/38 (2006.01); F02K 3/06 (2006.01)
CPC F02K 1/48 (2013.01) [F02K 1/386 (2013.01); F02K 3/06 (2013.01); F05D 2220/323 (2013.01); F05D 2240/128 (2013.01); F05D 2260/96 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A multi-piece-chevron ring for an exhaust nozzle assembly of a gas turbine engine, comprising:
a plurality of segments annularly arranged with a pylon segment to form an annulus about a central longitudinal axis of the gas turbine engine, the pylon segment configured for attachment proximate a pylon of an aircraft comprising the gas turbine engine;
each of the plurality of segments comprising:
an attachment portion extending radially from a radially inner side to a radially outer side relative to the longitudinal axis,
a trailing edge portion, and
a hollow portion located between the attachment portion and the trailing edge portion;
each attachment portion comprising:
an upstream side,
a downstream side,
an upstream step portion located on the downstream side of the attachment portion,
an inner flange on the radially inner side of the attachment portion and extending upstream from the upstream side, and
an outer flange on the radially outer side of the attachment portion and extending upstream from the upstream side,
wherein the outer flange extends further upstream than the inner flange,
wherein each attachment portion is configured to be coupled to a closeout seal, the closeout seal having an outer portion and an inner portion, the inner portion extending further downstream than the outer portion;
wherein a first segment of the plurality of segments comprises:
a first chevron comprising a first shell portion, and
a second chevron comprising a second shell portion,
wherein the first chevron and the second chevron extend downstream from the attachment portion of the first segment,
wherein the first shell portion and the second shell portion are integrally formed with the attachment portion of the first segment,
wherein a downstream portion of the first shell portion and a downstream portion of the second shell portion, together, form the trailing edge portion of the first segment; and
wherein a second segment of the plurality of segments comprises:
a third chevron, and
a fourth chevron,
wherein the third chevron and the fourth chevron are connected to and extending downstream from the attachment portion of the second segment,
wherein a downstream portion of the third chevron and a downstream portion of the fourth chevron, together, form the trailing edge portion of the second segment; and
wherein the attachment portions of the plurality of segments are annularly arranged with the pylon segment to form the annulus.