Patent ID: 7744034

Claim:
An apparatus for covering and uncovering a flap opening in an aircraft comprising: a door member; a torque tube member attached to a flap of an aircraft; a flap opening; separate track members disposed along opposite sides of the flap opening; a torque tube roller member attached to the door member, wherein the torque tube roller member rotates relative to the door member around a rotation axis; and a plurality of roller members attached to the door member, wherein the roller members are disposed at opposed sides of the door member, and the roller members are attached to and are configured to relatively move along the separate track members to move the door member from a position covering the flap opening to a position uncovering the flap opening; wherein in one position the torque tube roller member is in contact with the torque tube member which is configured to rotate the torque tube roller member around the rotation axis relative to the door member, and to force the roller members to move along the separate track members thereby moving the door member from the position covering the flap opening to the position uncovering the flap opening.