Patent ID: 7575014

Claim:
An air induction system for an aircraft engine having a power activated door for controlling flow of intake air, the system comprising: a housing having a hollow interior and an opening in the housing comprising an entryway for receiving intake air into the housing; said door, the door being pivotable between a closed position wherein said opening is closed and an open position wherein intake air enters the housing through said opening; an actuator cylinder for pivoting the door, the cylinder being linearly movable in a stroke having a range of motion extending between a first end position corresponding with the door being open and a second end position corresponding with the door being closed; and linkages which operatively connect the actuator cylinder to the door for transferring linear motion of the cylinder into rotational motion of the door, the linkages being configured such that movement of the cylinder through a distance produces a corresponding angular rotation of the door, wherein the second end position is within a portion of the stroke defining a dwell range wherein movement of the cylinder produces substantially no rotation of the door.