Characterization of piezoelectric actuators for flow control over a wing
Characterization of piezoelectric actuators for flow control over a wing
- Neue Suche nach: Mossi, K.
- Neue Suche nach: Bryant, R.
- Neue Suche nach: Mossi, K.
- Neue Suche nach: Bryant, R.
During the past decade, piezoelectric actuators as the active element in synthetic jets demonstrated that they could significantly enhance the overall lift on an airfoil. However, durability, system weight, size, and power have limited their use outside a laboratory. These problems are not trivial, since piezoelectric actuators are physically brittle and display limited displacement. The objective is to characterize the relevant properties for the design of a synthetic jet utilizing three types of piezoelectric actuators as mechanical diaphragms, radial field diaphragms, thunders, and bimorphs so that the shape cavity volume does not exceed 147.5 cm3 on a 7 cm x 7 cm aerial coverage. These piezoelectric elements were selected because of their geometry, and overall free-displacement. Each actuator was affixed about its perimeter in a cavity, and relevant parameters such as clamped displacement variations with voltage and frequency, air velocities produced through an aperture, and sound pressure levels produced by the piezoelectric diaphragms were measured.
Dokumentinformationen
Characterization of piezoelectric actuators for flow control over a wing
Piezoelektrische Strahlantriebsaktoren für die Flugregelung
2004
5 Seiten, 7 Bilder, 15 Quellen
Aufsatz (Konferenz)
Englisch
Ähnliche Titel
Roll Maneuver Control of UCAV Wing Using Anisotropic Piezoelectric Actuators
| British Library Conference Proceedings | 2002