Patent ID: 11946413
Assignee: THE BOEING COMPANY
Field: Transport (Mechanical engineering)
Classification: CPC B  F  Y | IPC B  F

Claim 0:
1. An engine nacelle inlet comprising:
an outer barrel;
an inner barrel;
a forward bulkhead having:
an outer flange coupled to a surface of the outer barrel;
an inner flange coupled to a surface of the inner barrel;
a single web extending in a flat plane and connecting the outer flange of the forward bulkhead to the inner flange of the forward bulkhead;
at least one annular stiffener comprising a fixed end, fixed directly to an aft-facing outer surface of the single web of the forward bulkhead and a free end opposite the fixed end, the at least one annular stiffener of the forward bulkhead extending outwardly from the aft-facing outer surface of the single web to the free end and interposed between the inner flange and the outer flange of the forward bulkhead; and
a plurality of radial stiffeners, where each one of the plurality of radial stiffeners comprises a fixed end, fixed directly to the aft-facing outer surface of the single web, and a free end opposite the fixed end of the corresponding radial stiffener, and each one of the plurality of radial stiffeners extends in a straight line radially across an entirety of a web height from the aft-facing outer surface of the single web to the free end of the corresponding radial stiffener, the web height equal to a radial distance from the inner flange to the outer flange; and

an aft bulkhead having:
an outer flange coupled to the surface of the outer barrel;
an inner flange coupled to the surface of the inner barrel;
a single web extending in a flat plane and connecting the outer flange of the aft bulkhead to the inner flange of the aft bulkhead;
at least one annular stiffener comprising a fixed end, fixed directly to an outer surface of the single web of the aft bulkhead and a free end opposite the fixed end of the at least one annular stiffener of the aft bulkhead, the at least one annular stiffener of the aft bulkhead extending outwardly from the outer surface of the single web of the aft bulkhead to the free end of the at least one annular stiffener of the aft bulkhead and interposed between the outer flange and the inner flange of the aft bulkhead; and
a plurality of radial stiffeners, where each one of the plurality of radial stiffeners of the aft bulkhead comprises a fixed end, fixed directly to the outer surface of the single web, and a free end opposite the fixed end of the corresponding radial stiffener, and each one of the plurality of radial stiffeners of the aft bulkhead extends in a straight line radially across an entirety of a web height from the outer surface of the single web of the aft bulkhead to the free end of the corresponding radial stiffener, the web height equal to a radial distance from the inner flange to the outer flange of the aft bulkhead.