In-flight tracking of helicopter rotor blades using shape memory alloy actuators

被引：74
|
作者：
Epps, JJ [1 ]
Chopra, I [1 ]
机构：
[1] Univ Maryland, Dept Aerosp Engn, Alfred Gessow Rotorcraft Ctr, College Pk, MD 20742 USA
来源：
SMART MATERIALS & STRUCTURES | 2001年 / 10卷 / 01期
关键词：
D O I：
10.1088/0964-1726/10/1/310
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
This paper describes the concept, design, fabrication and control of a shape memory alloy (SMA) wire actuator for tracking helicopter rotor blades while in-flight. A NACA 0012 wing section that has a 12 in chord and span was constructed with a trailing-edge tab with a 4 in span and a 2.4 in chord. A shape memory alloy wire actuator was embedded into the wing section. The actuator consists of a wire clamp, a hinge tube and several pre-strained, 0.015 in diameter SMA (Nitinol) wires. It was shown that with SMA wires that have 3.158% initial pre-strain, a tab deflection of 29 degrees could be obtained.
引用
收藏
页码：104 / 111
页数：8
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