OF DISCLOSURE An engine inlet for efficient operation at both design Mach number and off-design Mach numbers employs a variable geometry caret inlet (10) having a principal compression ramp (22) extending rotatably attached at a first hinge line (36). The principal compression ramp (22) is rotatable from a low Mach position to a design Mach position. A diffuser ramp (24) is engaged by the principal compression ramp (22) at an interface (26) and is rotatably mounted at a second hinge line (38). The diffuser ramp (24) is rotatable oppositely to the principal compression ramp (22) to maintain contact at the interface (26). A compression ramp filler (28) is mounted interior to the principal compression ramp (22) and engages the principal compression ramp (22) with a compression scrub surface. A diffuser ramp filler (32) is mounted interior to the diffuser ramp (24) and engages the diffuser ramp (24) with a diffuser scrub surface (33). Cl r~l Cl Cl Cl Cl Cl
Variable geometry two-ramp caret inlet
2025-05-22
Patent
Electronic Resource
English