公开(公告)号：US20170211485A1

公开(公告)日：2017-07-27

申请号：US15402885

申请日：2017-01-10

申请人： ROLLS-ROYCE plc

发明人： Timothy TRAMONTIN

IPC分类号： F02C9/22 ,  F01D9/04

CPC分类号： F02C9/22 ,  F01D9/041 ,  F02C9/20 ,  F05D2200/30 ,  F05D2260/821 ,  F05D2270/021 ,  F05D2270/112 ,  F05D2270/309 ,  F05D2270/44

摘要： A method of controlling settings of one or more actuatable gas turbine engine components includes: providing a first matrix which relates reduction in the operational parameter maximum value during the transient manoeuvre to settings of the component(s); providing a second matrix which relates the operational parameter maximum values attained during the transient manoeuvre: time to attain the maximum value after transient manoeuvre initiation, and operational parameter rate of change at the time of the maximum value; monitoring the engine in operation to identify a start of a transient manoeuvre; predicting, on the basis of the second matrix maximum values, an overshoot operational parameter amount during the identified transient manoeuvre and a time the overshoot occurrence; selecting a setting, using the first matrix, to eliminate the predicted overshoot; and applying the setting to the component(s) for a predetermined period around the predicted time of occurrence to reduce or avoid the overshoot.

公开(公告)号：US20200232338A1

公开(公告)日：2020-07-23

申请号：US16670241

申请日：2019-10-31

申请人： ROLLS-ROYCE plc

发明人： Zahid M HUSSAIN ,  Timothy TRAMONTIN

IPC分类号： F01D17/16 ,  F01D17/26

摘要： A modular fluid-driven linear actuator comprising an actuator support comprising a first part and a second part configured for relative linear movement, wherein the actuator support is configured to hold a plurality of removable actuator modules in parallel and in respective module-receiving locations defined between the first part and the second part. At least one actuator module is removably installed in the actuator support and held in a respective module-receiving location of the plurality. A first fluid manifold is configured to provide a drive fluid to each actuator module when received in a respective module-receiving location, to act on a piston of the actuator module having a respective piston area to drive the piston in a first direction. A total piston area of the modular actuator is variable by installing and uninstalling actuator modules in the actuator support.