Aircraft duct assembly and sealing structure

An aircraft duct assembly for an engine having an engine fairing, the aircraft duct assembly comprising:

• a first duct wall comprising:
• a first forward edge,
• a first aft edge opposite the first forward edge, and
• a first duct interface extending from the first forward edge to the first aft edge and having a first recess that defines a portion of a cavity for receiving the engine fairing;
• a second duct wall for cooperatively enclosing at least a portion of the engine with the first duct wall, the second duct wall comprising:
• a second forward edge,
• a second aft edge opposite the second forward edge, and
• a second duct interface extending from the second forward edge to the second aft edge and having a second recess that defines a portion of the cavity for receiving the engine fairing;
• and
• a sealing structure for sealing a space between the engine fairing and the first duct wall and the second duct wall, the sealing structure comprising:
• a first seal portion secured to at least a portion of the first duct interface, the first seal portion comprising a forward end with a first coupling mechanism, and
• a second seal portion secured to at least a portion of the second duct interface, the second seal portion comprising a forward end with a second coupling mechanism that couples to the first coupling mechanism.

A sealing structure for sealing a space between first and second parts of a fan duct and a fairing of an aircraft engine, the sealing structure comprising:

• a first seal portion for positioning between the fairing and the first part of the fan duct, the first seal portion comprising:
• an elongated middle region including a tab portion for securing to the first part of the fan duct and a flexible center blade extending at an angle relative to the tab portion for abutting the fairing,
• an aft fairing block extending from the middle region and comprising compressible material, and
• a forward transition block extending from the elongated middle region opposite to the aft fairing block and including compressible material, and
• a first coupling mechanism connected to the forward transition block;
• and
• a second seal portion for positioning between the fairing and the second part of the fan duct, the second seal portion comprising
• an elongated middle region including a tab portion for securing to the second part of the fan duct and a flexible center blade extending at an angle relative to the tab portion for abutting the fairing,
• an aft fairing block extending from the middle region and operable to abut the aft fairing block of the first seal portion, and
• a forward transition block extending from the elongated middle region opposite to the aft fairing block, and
• a second coupling mechanism that is operable to couple to the first coupling mechanism.