Rotary-wing aeroelastic scaling and its implications for adaptive-materials-based actuation

Peretz P. Friedmann

doi:10.1117/12.350751

9 June 1999 Rotary-wing aeroelastic scaling and its implications for adaptive-materials-based actuation

Peretz P. Friedmann

Proceedings Volume 3668, Smart Structures and Materials 1999: Smart Structures and Integrated Systems; (1999) https://doi.org/10.1117/12.350751
Event: 1999 Symposium on Smart Structures and Materials, 1999, Newport Beach, CA, United States

Abstract

The aeroelastic scaling problem is revisited and it is shown that classical aeroelastic scaling relations, developed for flutter, need to be extended when dealing with modern aeroelastic applications, involving controls and adaptive materials based actuation. For such problems a novel two pronged approach is presented that produces refined aeroelastic scaling laws by a judicious combination of the classical approach with more sophisticated computer simulations. It is also shown that the rotary-wing equivalent to fixed-wing aeroelastic scaling, based on typical cross-section concepts, is the offset hinged spring restrained blade model. Scaling laws for the rotary-wing aeroelastic and aeroservoelastic problem are obtained. These scaling requirements imply that scale model tests, conducted on small models intended to demonstrate active control of vibration using adaptive materials based actuation, use very flexible models that often disregard aeroelastic scaling. Thus, the extension of these results to the full scale configuration is difficult.

Citation Download Citation

Peretz P. Friedmann "Rotary-wing aeroelastic scaling and its implications for adaptive-materials-based actuation", Proc. SPIE 3668, Smart Structures and Materials 1999: Smart Structures and Integrated Systems, (9 June 1999); https://doi.org/10.1117/12.350751

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