Cable-actuated variable area fan nozzle with elastomeric seals

摘要

An apparatus installed on an aircraft, comprising: a sleeve or duct having a trailing lip area; a plurality of petals arranged side by side with gaps therebetween, one end of each petal being attached or pivotably coupled to the lip area; and a plurality of elastomeric seals configured and disposed to close the gaps between adjacent petals. Each elastomeric seal comprises a first portion that moves with a portion of a first petal that is in contact therewith, a second portion that moves with a portion of a second petal that is in contact there, and a third portion which is stretched as the first and second petals move further apart from each other. Petal deflection is actuated by a system comprising a flexible member, a motor, a shaft driven by the motor, and an arm projecting from the shaft. One end of the flexible member is attached to the arm, the flexible member being movable to deflect the petals inward in response to a shaft rotation.

主权项

1. An apparatus installed on an aircraft, comprising:
a sleeve or duct having a trailing lip area; a plurality of petals arranged side by side with gaps between adjacent petals, one end of each petal being attached or pivotably coupled to said lip area; a plurality of elastomeric seals configured and disposed to close said gaps between adjacent petals; and an actuation system comprising a first flexible member, first and second motors, a first shaft driven by said first motor, a second shaft driven by said second motor, a first arm projecting transversely from said first shaft and comprising a distal end, and a second arm projecting transversely from said second shaft and comprising a distal end, wherein one end of said first flexible member is attached to said distal end of said first arm and another end of said first flexible member is attached to said distal end of said second arm, said first flexible member being movable to deflect said petals inward as said distal ends of said first and second arms move apart in response to rotation of said first and second shafts in opposite directions.