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Magnetic Flap Leading Edge Seal

IP.com Disclosure Number: IPCOM000250484D
Publication Date: 2017-Jul-25
Document File: 3 page(s) / 586K

Publishing Venue

The IP.com Prior Art Database

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This is the abbreviated version, containing approximately 100% of the total text.



This disclosure relates to sealing between the external surfaces of aircraft component, with the objective of achieving a smooth external aerodynamic surface at the location of the seal(s) between components. The disclosed technology may find particular advantage when applied to a p-seal with blade arrangement – in this application the technology is intended to prevent the blade element from lifting up away from the surface due to air-load. Types of flap leading edge seal: Fig. 1: Bulb + blade flap leading edge seal Fig. 2: Blade only leading edge seal The purpose of the blade element is to prevent a gap in the aerodynamic profile between the lower surface shroud panel and the flap leading edge, and thereby to avoid parasitic drag by making a continuous surface. However; sometimes the blade element may protrude out into the flow like a spoiler, due to air load in the cruise configuration.

The disclosed technology proposes to address this problem by providing a magnetic strip on the blade element of the seal and another built into the flap leading edge.


strips Flap not quite

fully retracted

in this diagram

Lower surface

shroud panel

Magnetic strip

Magnetic strip

The magnetic strip prevents the blade element from lifting in the cruise configuration, stopping it from creating drag like a spoiler. The flaps can extend and retract as normal, as the flap mechanism is much stronger than the magnetic strip.