Flap operating system
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsMinoru Uchida, Hiroshi Yamanouchi, Katsutoshi Tada
Life of this patent
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Abstract
In a flap operating system, left and right actuators for operating left and right flaps are synchronized with each other by left and right pulleys and first and second synchronizing cables wound in an X-shape around the left and right pulleys. If one of the hydraulic actuators fall into a free failure or fails due to sticking, a difference is generated between the rotational angles of the left and right pulleys. When the difference exceeds a threshold value, the operations of the left and right actuators are stopped, whereby an excessive load is previously prevented from being applied to a main wing structure or the flap operating system.
Claims20
A flap operating system for operating left and right flaps mounted on left and right main wings synchronously with each other, comprising:
- left and right hydraulic actuators for driving the left and right flaps, respectively,
- left and right pulleys connected to and rotated by said left and right hydraulic actuators, and
- first and second synchronizing cables for connecting said left and right pulleys in an X-shape to each other to synchronize the rotations of said left and right pulleys, said system further including:
- left and right rotational angle sensors for detecting rotational angles of said left and right pulleys, respectively, and
- control means for calculating a difference between the rotational angles detected by said left and right rotational angle sensors and to stop the operations of said hydraulic actuators when said difference exceeds a predetermined threshold value.
An operating system adapted to be used for operating left and right flaps mounted on left and right main wings synchronously with each other, comprising:
- left and right hydraulic actuators adapted for driving left and right flaps, respectively,
- left and right pulleys connected to and rotated by said left and right hydraulic actuators, and
- first and second synchronizing cables for connecting said left and right pulleys to each other for synchronizing the rotations of said left and right pulleys, said system further including:
- left and right rotational angle sensors for detecting rotational angles of said left and right pulleys, respectively, and
- control means adapted for calculating a difference between the rotational angles detected by said left and right rotational angle sensors and to stop the operations of said hydraulic actuators when said difference exceeds a predetermined threshold value.
Dependencies are inferred from the claim text.