Self-aligning inlet plenum system for rotorcraft

摘要

An inlet system for a rotorcraft includes a cowl door assembly and a plenum assembly. The cowl door assembly includes a door member, a cowl inlet opening, and a cowl inlet duct. The plenum assembly is configured to free float in relation to the cowl door. The plenum assembly includes a plenum duct with a plenum band configured to attach the plenum assembly to an inlet opening. An aft seal is located between the aft plenum flange and a firewall, the aft seal being configured to provide a compressive contact between the plenum assembly and the firewall.

主权项

1. An inlet system for an aircraft, the inlet system comprising:
a cowl door assembly comprising:
a door member coupled to a structure of the aircraft;a cowl inlet opening;a cowl inlet duct;a cowl inlet band located on a downstream portion of the cowl inlet duct; a plenum assembly configured to free float in relation to the cowl door assembly, the plenum assembly comprising:
a plenum duct;a plenum band located on an upstream portion of the plenum duct;an aft plenum flange located on a downstream portion of the plenum duct; wherein the cowl inlet band and the plenum band are configured to mate, thereby causing alignment of the plenum duct to the cowl inlet duct; and wherein the plenum assembly is configured to free float by the way of a compression contact with one or more seals between the plenum assembly and an adjacent structure.