Patent ID: 9017038
Filing Date: 2015-04-28
Classification: F04D,Y02B

Abstract:
1. A fan system comprising: a fan shroud comprising an airflow inlet and airflow outlet; a rotor shaft extending along a fan axis defined between the airflow inlet and airflow outlet; a fan hub coaxially disposed within the fan shroud and comprising a rotor hub and a stator hub downstream of the rotor hub; at least one rotor blade extending through the rotor hub; and at least one stator vane extending through the stator hub, wherein the at least one stator vane comprises a fixed trailing edge, an adjustable leading edge, and a rotating mechanism disposed proximate a central position along a length of the at least one stator vane between the fixed trailing edge and the adjustable leading edge, wherein actuation of the rotating mechanism is configured to trigger the rotation of the at least one stator vane such that said at least one stator vane pivots from said central position, thereby moving said adjustable leading edge, while said fixed trailing edge remains stationary.