Dual door fan air modulating valve

摘要

A fan air modulating valve (FAMV) employs a pair of doors rotatably attached at the fan bypass air exit of a precooler. An actuator engages the doors for simultaneous rotation through a range of motion from a first closed position to a second open position, wherein trailing edges of said doors sealingly engage an exit plenum extending from the precooler in the first closed position and fan bypass air flow is modulated by positioning the doors within the range of motion between the first and second positions.

主权项

1. A fan air modulating valve (FAMV) comprising:
at least one pair of doors rotatably attached at an air exit of a fan bypass air cooled device; and, an actuator incorporating a push rod extendible from a first position corresponding to the closed position to a second position corresponding to the open position and tie rods connected at a single hinge point on the push rod and extending to a hinge joint on the doors for simultaneous and mirrored rotation from a closed position to an open position, wherein said doors sealingly engage an exit plenum extending from the fan bypass air cooled device in a closed position and deflect a flow of fan bypass air in an open position.