Application of shape memory alloy (SMA) spars for aircraft maneuver enhancement

Research output: Chapter in Book/Report/Conference proceedingConference contribution

22 Scopus citations


Modern combat aircraft are required to achieve aggressive maneuverability and high agility performance, while maintaining handling qualities over a wide range of flight conditions. Recently, a new adaptive-structural concept called variable stiffness spar is proposed in order to increase the maneuverability of the flexible aircraft. The variable stiffness spar controls wing torsional stiffness to enhance roll performance in the complete flight envelope. However, variable stiffness spar requires the mechanical actuation system in order to rotate the Variable stiffness spar during flight. The mechanical actuation system to rotate variable stiffness spar may cause an additional weight increase. In this paper, we will apply Shape Memory Alloy (SMA) spars for aeroelastic performance enhancement. In order to explore the potential of SMA spar design, roll performance of the composite smart wings will be investigated using ASTROS. Parametric study will be conducted to investigate the SMA spar effects by changing the spar locations and geometry. The results show that with activation of the SMA spar, the roll effectiveness can be increased up to 61% compared with the baseline model.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsL. Porter Davis
Number of pages11
StatePublished - 2002
EventSmart Structures and Materials 2002: Smart Structures and Integrated Systems - San Diego, CA, United States
Duration: Mar 18 2002Mar 21 2002


OtherSmart Structures and Materials 2002: Smart Structures and Integrated Systems
Country/TerritoryUnited States
CitySan Diego, CA


  • Aeroelastic control
  • Roll effectiveness
  • Shape memory alloy
  • SMA spars
  • Smart structures

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


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