초록 ▼

Shape memory alloy actuators for aircraft landing gear are provided. In one embodiment a retractable aircraft landing gear system is provided. This embodiment includes a shape memory spring strut having a first end and a second end wherein the shape memory spring strut is extendable from a first len

Shape memory alloy actuators for aircraft landing gear are provided. In one embodiment a retractable aircraft landing gear system is provided. This embodiment includes a shape memory spring strut having a first end and a second end wherein the shape memory spring strut is extendable from a first length to a second length and the shape memory spring strut contains a shape memory alloy. This embodiment also includes a shape memory spring strut activation line connected to the shape memory spring strut wherein the shape memory spring strut activation line may be configured to activate the shape memory spring strut and a longitudinal connecting member having a first segment and a second segment wherein the first segment is in pivotal contact with the first end of the shape memory spring strut and the second segment supports a wheel rotatably mounted on a pin. The connecting member may be moveable along a line of travel from an extended position to a retracted position in this embodiment.

대표청구항 ▼

1. A retractable aircraft landing gear system comprising:a shape memory spring strut having a first end and a second end, the shape memory spring strut extendable from a first length to a second length, the shape memory spring strut containing a shape memory alloy; a shape memory spring strut activa

1. A retractable aircraft landing gear system comprising:a shape memory spring strut having a first end and a second end, the shape memory spring strut extendable from a first length to a second length, the shape memory spring strut containing a shape memory alloy; a shape memory spring strut activation line connected to the shape memory spring strut, the shape memory spring strut activation line configured to activate the shape memory spring strut; and a longitudinal connecting member having a first segment and a second segment, the first segment in pivotal contact with the first end of the shape memory spring strut and the second segment supporting a wheel rotatably mounted on a pin, the connecting member moveable along a line of travel from an extended position to a retracted position.