Patent ID: 11932398
Assignee: THE BOEING COMPANY
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 5:
6. The horizontal stabilizer assembly of claim 1, wherein:
the first multi-spar box of the first horizontal stabilizer includes a front spar, a rear spar, at least one mid spar positioned between and spaced apart from the front spar and the rear spar, a top skin extending between the front spar and the rear spar, and a bottom skin disposed opposite the top skin and extending between the front spar and the rear spar;
the first horizontal stabilizer includes a first pivot joint secured to the rear spar of the first multi-spar box, and a first plurality of riblets longitudinally aligned between the front, mid, and rear spars of the first multi-spar box and aligned with the first pivot joint;
the second multi-spar box of the second horizontal stabilizer includes a front spar, a rear spar, at least one mid spar positioned between and spaced apart from the front spar and the rear spar, a top skin extending between the front spar and the rear spar, and a bottom skin disposed opposite the top skin and extending between the front spar and the rear spar; and
the second horizontal stabilizer includes a second pivot joint secured to the rear spar of the second multi-spar box, and a second plurality of riblets longitudinally aligned between the front, mid, and rear spars of the second multi-spar box and aligned with the second pivot joint.