| US 7,575,014 B2 | ||
| Control of engine intake door | ||
| James F. Stelzer, St. Louis, Mo. (US) | ||
| Assigned to Aerospace Filtration Systems, Inc., St. Charles, Mo. (US) | ||
| Filed on Jul. 29, 2005, as Appl. No. 11/192,900. | ||
| Prior Publication US 2007/0025838 A1, Feb. 01, 2007 | ||
| Int. Cl. F02B 27/00 (2006.01); F02K 99/00 (2009.01) | ||
| U.S. Cl. 137—15.1 [60/39.092; 244/53 B] | 20 Claims |
| 1. 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.
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