Ground and Flight Test Structural Excitation Using Piezoelectric Actuators PDF Download

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Ground and Flight Test Structural Excitation Using Piezoelectric Actuators

Ground and Flight Test Structural Excitation Using Piezoelectric Actuators PDF Author:
Publisher:
ISBN:
Category : Actuators
Languages : en
Pages : 20

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Book Description
A flight flutter experiment at the National Aeronautics and Space Administration (NASA) Dryden Fight Research Center, Edwards, California, used an 18-inch half-span composite model called the Aerostructures Test Wing (ATW). The ATW was mounted on a centerline flight test fixture on the NASA F-15B and used distributed piezoelectric strain actuators for in-flight structural excitation. The main focus of this paper is to investigate the performance of the piezoelectric actuators and test their ability to excite the first-bending and first-torsion modes of the ATW on the ground and in-flight. On the ground, wing response resulting from piezoelectric and impact excitation was recorded and compared. The comparison shows less than a 1-percent difference in modal frequency and a 3-percent increase in damping.