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Proceedings Paper

Design of a smart material actuator for rotor control
Author(s): Friedrich K. Straub; Donald J. Merkley
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Paper Abstract

The results of a study to conceptually define an on-blade smart material actuator for primary and active control on a servoflap rotor are presented. Actuator design drivers, goals, and requirements are defined. For a previously developed hybrid actuator concept, the design of the cyclic and active (high speed) control actuator and feasibility of the collective (low speed) actuator and stroke multiplier are investigated. Sizing of actuator components based on AH-64 servoflap requirements shows that collective control using shape memory alloys is well within the capability of the material. Cyclic and active control using magnetostrictive material, leads to a reduced maneuver envelope due to weight and volume constraints. The promise of smart materials can be realized incrementally as the materials and actuator design approaches mature. Future improvements in smart material performance and actuator technology, and additional rotor system design changes to reduced load and motion requirements should provide the full AH-64 maneuver envelope.

Paper Details

Date Published: 8 May 1995
PDF: 16 pages
Proc. SPIE 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems, (8 May 1995); doi: 10.1117/12.208249
Show Author Affiliations
Friedrich K. Straub, McDonnell Douglas Aerospace (United States)
Donald J. Merkley, U.S. Army Aviation Applied Technology Directorate (United States)

Published in SPIE Proceedings Vol. 2443:
Smart Structures and Materials 1995: Smart Structures and Integrated Systems
Inderjit Chopra, Editor(s)

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