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Proceedings Paper

High integrity adaptive SMA components for gas turbine applications
Author(s): John Webster
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Paper Abstract

The use of Shape Memory Alloys (SMAs) is growing rapidly. They have been under serious development for aerospace applications for over 15 years, but are still restricted to niche areas and small scale applications. Very few applications have found their way into service. Whilst they have been predominantly aimed at airframe applications, they also offer major advantages for adaptive gas turbine components. The harsh environment within a gas turbine with its high loads, temperatures and vibration excitation provide considerable challenges which must be met whilst still delivering high integrity, light weight, aerodynamic and efficient structures. A novel method has been developed which will deliver high integrity, stiff mechanical components which can provide massive shape change capability without the need for conventional moving parts. The lead application is for a shape changing engine nozzle to provide noise reduction at take off but will withdraw at cruise to remove any performance penalty. The technology also promises to provide significant advantages for applications in a gas turbine such as shape change aerofoils, heat exchanger controls, and intake shapes. The same mechanism should be directly applicable to other areas such as air frames, automotive and civil structures, where similar high integrity requirements exist.

Paper Details

Date Published: 30 March 2006
PDF: 8 pages
Proc. SPIE 6171, Smart Structures and Materials 2006: Industrial and Commercial Applications of Smart Structures Technologies, 61710F (30 March 2006); doi: 10.1117/12.669027
Show Author Affiliations
John Webster, Rolls-Royce Plc (United Kingdom)


Published in SPIE Proceedings Vol. 6171:
Smart Structures and Materials 2006: Industrial and Commercial Applications of Smart Structures Technologies
Edward V. White, Editor(s)

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