SEMI-AUTONOMOUS RAPID RESPONSE ACTIVE CLEARANCE CONTROL SYSTEM

摘要

A semi-autonomous rapid response active clearance control system (68) for a gas turbine engine (10) includes an outer case, a carrier (64) for a blade outer airseal (BOAS) (66) positioned radially inward of the outer case (62), a blade outer airseal (BOAS) (66) positioned radially inward of and mounted to the carrier (64), at least one electromechanical actuator (70) attached to the outer case (62) and selectively operable to move the carrier (64), and a sensing system (72). The sensing system (72) includes a maneuver sensor (74) housed within the actuator (70) and configured to output a first signal, a position sensor (76) mounted proximate to the blade outer airseal (BOAS) (66) and configured to output a second signal, and a control means (78) in communication with the maneuver sensor (74) and the position sensor (76).