Patent ID: 11859511
Assignee: ROLLS-ROYCE CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A dual-wall airfoil comprising:
a spar having a chord axis and a span axis;
a coversheet on the spar; and
a dual feed circuit between the spar and the coversheet, the dual feed circuit including
a first dam,
a second dam spaced apart from the first dam along the chord axis of the spar, the first dam and the second dam forming an upstream boundary and a downstream boundary, respectively, of the dual feed circuit,
a first inlet disposed adjacent to and downstream of the first dam,
a second inlet disposed adjacent to and upstream of the second dam,
a circuit outlet disposed between the first inlet and the second inlet, and
a plurality of diamond shaped pedestals disposed on an outer surface of the spar, the outer surface of the spar facing the coversheet, the diamond shaped pedestals located between the first inlet and the second inlet forming a plurality of cooling channels between the first inlet and the circuit outlet and between the second inlet and the circuit outlet, and wherein no other circuit inlets are located between the first inlet and the second inlet.