Blocker door frame pressure structure for translating cowl of cascade thrust reverser for aircraft jet engine

In a translating cowl for a cascade type thrust reverser that includes a forward fixed structure having a torque box for a bypass aircraft jet engine, the combination comprising:

• an annular inner surface panel having a leading edge and a trailing edge and comprising a single layer honeycomb core panel having spaced facing sheets with one of said facing sheets providing a portion of the wall forming a duct for the bypass fan air flow for an aircraft jet engine, said annular inner surface being provided with a plurality of spaced circumferentially arranged apertures, each of said apertures providing an opening at the leading edge of said inner surface panel, and
• a one piece air impervious blocker door frame sealingly positioned in and completely filling each of said apertures, each blocker door frame being configured to hingedly receive a blocker door whereby when the translating cowl is in a stowed position each blocker door is positioned within said blocker door frame so as to receive only a grazing air flow from said fan duct air flow.

In a translating cowl for a cascade type thrust reverser having a torque box fixed structure and that forms a fan duct for a bypass aircraft jet end and which includes an outer panel surface and inner surface provided by a generally annularly shaped honeycomb core panel having a leading edge and a trailing edge, the improvement of:

• a plurality of spaced one piece air impervious blocker door frames that are circumferentially arranged around the leading edge of said honeycomb panel by being sealingly inserted into spaced circumferentially arranged openings extending aft from said leading edge each blocker door frame being configured to hingedly receive a blocker door that in a stowed position does not extend into such fan duct air flow.