Gas turbine engine comprising a variable area nozzle driven by shape memory alloy actuators
摘要
<p>A gas turbine engine (10) includes a variable area nozzle (30) having a plurality of flaps (38). The flaps (38) are actuated by a plurality of actuating mechanisms (40) driven by shape memory alloy (SMA) actuators (68) to vary fan exist nozzle area (36). The SMA actuator (68) has a deformed shape in its martensitic state and a parent shape in its austenitic state. The SMA actuator (68) is heated to transform from martensitic state to austenitic state generating a force output to actuate the flaps (38). The variable area nozzle (30) also includes a plurality of return mechanisms (42) deforming the SMA actuator (68) when the SMA actuator (68) is in its martensitic state. <IMAGE></p>
申请公布号
EP1130243(B1)
申请公布日期
2005.07.27
申请号
EP20010301924
申请日期
2001.03.02
申请人
UNITED TECHNOLOGIES CORPORATION
发明人
REY, NANCY M.;MILLER, ROBIN MIHEKUN;TILLMAN, THOMAS G.;RUKUS, ROBERT M.;KETTLE, JOHN L.;DUNPHY, JAMES R.;CHAUDHRY, ZAFFIR A.;PEARSON, DAVID D.;DREITLEIN, KENNETH C.;LOFFREDO, CONSTANTINO V.;WYNOSKY, THOMAS A.