An air seal assembly for an aircraft control surface comprises a bulb-type air seal, a mounting bracket and a fastener. The bulb-type air seal has a hollow bulb portion, a T-shaped mounting extension, and a first through hole extending through the T-shaped mounting extension. The mounting bracket ha
An air seal assembly for an aircraft control surface comprises a bulb-type air seal, a mounting bracket and a fastener. The bulb-type air seal has a hollow bulb portion, a T-shaped mounting extension, and a first through hole extending through the T-shaped mounting extension. The mounting bracket has a T-shaped channel configured to slidingly receive the T-shaped mounting extension of the air seal and a second through hole. The fastener has a head at one end and an opposite exposed end sized for extending through the first through hole in the T-shaped mounting extension and through the second through hole in the mounting bracket. The exposed end is accessible to tighten the fastener against the bracket to keep the air seal in place within the T-shaped channel.
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1. An air seal assembly for an aircraft control surface, the air seal assembly comprising: a resiliently deformable non-metallic bulb-type air seal having a hollow bulb portion that is continuous in cross-section around a hollow space, a T-shaped mounting extension that is monolithically formed with
1. An air seal assembly for an aircraft control surface, the air seal assembly comprising: a resiliently deformable non-metallic bulb-type air seal having a hollow bulb portion that is continuous in cross-section around a hollow space, a T-shaped mounting extension that is monolithically formed with the hollow bulb portion, and a through hole extending through the T-shaped mounting extension;a filler plate fit within the hollow space of the hollow bulb portion and having a through hole and a contoured contact surface, the contoured contact surface being fit against an oppositely contoured inner surface of the hollow bulb portion;a mounting bracket having a through hole and a T-shaped channel, the T-shaped channel slidingly receiving the T-shaped mounting extension of the air seal; anda fastener having a head at one end and an opposite exposed threaded end receiving a nut thereon, the fastener extending through the through hole in the filler plate, through the through hole in the T-shaped mounting extension and through the through hole in the mounting bracket, wherein the exposed end comprises a recess shaped to receive a tool for holding the fastener while the nut is tightened on the exposed threaded end of the fastener to secure the air seal between the filler plate and the mounting bracket to retain the air seal in place within the T-shaped channel, wherein the fastener and nut are tigthtenable without accessing the head of the fastener. 2. The air seal assembly of claim 1, wherein the fastener is a threaded bolt. 3. The air seal assembly of claim 1, wherein the mounting bracket has a right-angle flange cross-section. 4. The air seal assembly of claim 1, wherein the through hole in the filler plate is countersunk to accommodate the head of the fastener and sized to receive the fastener. 5. The air seal assembly of claim 1, wherein the filler plate and the mounting bracket are each formed of a relatively rigid material, and wherein the bulb seal is formed of a resilient material, and wherein the arrangement of the fastener, filler plate, air seal and mounting bracket allows the air seal to be securely fastened to the bracket without causing damage to the resilient material of the air seal. 6. The air seal assembly of claim 1, wherein the fastener comprises a fastening pin having the head and a collar having a nut, and wherein the nut is configured to separate from the collar after the collar is tightened against the mounting bracket to a predetermined preload specification. 7. The air seal assembly of claim 1, wherein the recess is shaped to receive a hex key. 8. An air seal assembly for an aircraft control surface, the air seal assembly comprising: an elongate air seal made of a resiliently deformable non-metallic material and having a monolithically formed body defining a deformable hollow bulb that is continuous in cross-section around a hollow space, a T-shaped mounting extension and an intermediate web connecting the T-shaped mounted extension to the hollow bulb, the elongate air seal having at least one through hole extending at least through the T-shaped mounting extension and the intermediate web;a filler plate having a through hole and a contoured contact surface, wherein the filler plate is located within the hollow space of the hollow bulb and is shaped to be inserted into the hollow bulb through an open end of the hollow bulb of the elongate air seal, wherein the contoured contact surface contacts an oppositely contoured inner surface of the hollow bulb;a mounting bracket having a retaining channel with an open outer side, the retaining channel having at least one end slidingly receiving the T-shaped mounting extension with the hollow bulb extending outward through the open outer side, the mounting bracket having an attachment flange extending transversely from the mounting channel; anda fastener having a head at one end and an opposite threaded end receiving a nut thereon, the fastener extending through the through hole in the filler plate, through the through hole in the elongate air seal and through the mounting bracket to retain the air seal in place within the channel, wherein the fastener and nut are tightenable without accessing the head of the fastener. 9. The air seal assembly of claim 8, wherein the attachment flange comprises a series of spaced apart slotted openings dimensioned to receive other fasteners for attaching the air seal assembly to an aircraft. 10. The air seal assembly of claim 8, wherein the at least one through hole in the elongate seal is located within about 0.3 to about 1.5 inches of an end of the elongate air seal. 11. The air seal assembly of claim 8, wherein the contoured contact surface is free from sharp edges where the contact surface contacts the inner surface of the seal.
Kordel, Jan A.; Sakurai, Seiya; Bowers, Bret A.; Glassmoyer, Christopher G.; Williams, Darren B., Seal assemblies for use with drooped spoilers and other control surfaces on aircraft.
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