The Boeing Company

Ramón Burin

Mark Steven Good

Samuel L Block

John A Standley

Kyle Steven Wydock

An aircraft includes a wing and a leading-edge aerodynamic surface coupled to the wing. An actuator is disposed within the wing and coupled to the leading-edge aerodynamic surface via a linkage system. Two or more hinge systems are coupled to the leading-edge aerodynamic surface and configured to rotate about a fixed axis internal to the wing to move the leading-edge aerodynamic surface between a retracted position and a drooped position.

Leading-edge droop actuation system

A mechanism for moving an aircraft wing slat between a retracted position and a deployed position includes a rib, an arm, a first bar and a second bar. The arm is disposed generally parallel with the rib and is configured for attachment with the wing slat. The rib, the arm and the first and second bars cooperate to form a four-bar linkage which is rotatable about connection points in a negative pitch rotational direction to dispose the arm in the deployed position, and in a positive pitch rotational direction to disposing the arm in the retracted position. The mechanism includes additional structures for maintaining the arm in the deployed position, including a magnetic extend stop and a standoff, an arm lobe and a cross-bolt, and a bar lobe and a linear member.

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Lake Stevens, WA, United States of America

Ramón Burin