|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||060/226.3; 060/232; 244/219|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 27 인용 특허 : 14|
A gas turbine engine includes a variable area nozzle having a plurality of flaps. The flaps are actuated by a plurality of actuating mechanisms driven by shape memory alloy (SMA) actuators to vary fan exist nozzle area. The SMA actuator has a deformed shape in its martensitic state and a parent shape in its austenitic state. The SMA actuator is heated to transform from martensitic state to austenitic state generating a force output to actuate the flaps. The variable area nozzle also includes a plurality of return mechanisms deforming the SMA actuator whe...
1. A mechanism comprising: a four bar linkage including a non-movable arm, an output arm, a flap and a link, each of the non-movable member and the output arm being coupled to both the link and the flap; and a SMA actuator, including a deformable element, engaging said output arm, said SMA actuator generating a force output upon transition from a martensitic state to an austenitic state. 2. The mechanism according to claim 1, wherein said four bar linkage is a parallel four bar linkage such that the deformable element of said SMA actuator cooperate...