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FIREPROOF PRESSURE RELIEF ASSEMBLY

  • US 20200130811A1
  • Filed: 10/24/2018
  • Published: 04/30/2020
  • Est. Priority Date: 10/24/2018
  • Status: Active Grant
First Claim
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1. A pressure relief assembly (24) comprising:

  • an aircraft engine cowl (26) including radially outer and inner skins (28,30) having an opening therethrough;

    a door frame (32) fixedly joined around the perimeter of said opening and extending laterally therefrom to define a door seat (34) surrounding a central portal (36) and facing radially outwardly;

    a pressure relief door (38) pivotally joined to said cowl (26) for being deployed outwardly from a stowed closed position covering said portal (36) to a deployed open position uncovering said portal (36);

    said door (38) having radially opposite inner and outer surfaces (40,42) terminating in a perimeter rim (44), with said inner surface of said rim (44) overlapping said door seat (34) to define a primary seal (46) in said door stowed position; and

    a fireproof secondary seal (48) bridging said door inner surface (40) and said frame (32) around the inner perimeter of said primary seal (46) to pre-seal flow to said primary seal (46).

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