CONTROLLING ICE BUILDUP ON AIRCRAFT ENGINE AND NACELLE STATIC AND ROTATING COMPONENTS
4 Assignments
0 Petitions
Accused Products
Abstract
A turbofan engine deicing system includes a core nacelle (12) housing a turbine. A turbofan (20) is arranged upstream from the core nacelle. A controller (50) manipulates the turbofan in response to detecting an icing condition for avoiding undesired ice buildup on the turbofan engine (10) and nacelle parts. In one example, a variable area nozzle (40) is actuated to generate pressure pulses or a surge condition to break up any ice buildup. The icing condition can be determined by at least one sensor (52) and/or predicted based upon icing conditions schedules.
-
Citations
38 Claims
-
1-20. -20. (canceled)
-
21. A turbofan engine deicing system comprising:
-
a core nacelle including a core housing a turbine; a turbofan arranged upstream from the core nacelle; a fan nacelle surrounding the turbofan and the core nacelle to provide an annular bypass flow path, the annular bypass flow path providing primary thrust and the core providing secondary thrust less than the primary thrust; a control device configured to receive a command, the control device configured to effectively change a nozzle exit area of the annular bypass flow path in response to the command; and a controller programmed to send the command to the control device in response to detecting an icing condition for avoiding undesired ice buildup on the turbofan engine. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
-
-
31. A method of deicing a turbofan engine comprising the steps of:
-
detecting an icing condition; providing a control device that changes an effective nozzle exit area provided by a bypass flow path that extends between core and fan nacelles in response to a command; and sending the command to the control device in response to detecting the icing condition to prevent ice buildup on the turbofan engine. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38)
-
Specification