文档介绍：AEROELASTICITY’S ROLE IN INNOVATIVE UAV DESIGN AND OPTIMIZATION
– THE WAY THINGS OUGHT TO BE
Terrence A. Weisshaar
Professor, School of Aeronautics and Astronautics
Purdue University
West Lafayette, Indiana USA
ABSTRACT PREFACE
Aeroelasticity is a design activity concerned with the In 1972 Dr. . (Ed) Garrick presented the Fifth
consequences of interactions between aerodynamic Theodore von Karman Memorial Lecture entitled
forces and structural deformations. This presentation “Perspectives in Aeroelasticity” to the 14th Israel
examines the influence that aeroelasticity exerts Annual Conference on Aviation and Astronautics held
during the development of efficient, innovative air in Tel Aviv and Haifa. He discussed how
vehicle design, particularly UAV design. UAV aeroelasticians had advanced the ability to analyze
designs often have unusual shapes with features plex configurations, expanded the accuracy and
integration provides performance trade-offs that do not use puterized numerical methods and merged
occur in conventional aircraft. Designs affected diverse engineering fields. He also saw the emerging
include oblique wing vehicles, forward swept wing roles of active load alleviation, optimization, active
aircraft, X-wings, flying wings and large joined wings. flutter suppression and improved experimental
Important aeroelastic phenomena include aero- facilities in the quest for better air vehicles.
structural instabilities such as flutter and divergence,
load redistribution and flight control ineffectiveness at The central purpose of this talk is not to
high speeds. Aeroelastic interaction can be prehensively review all aspects of aeroelasticity or
to suppress the interactions or to use the interaction to to list in detail all of the significant aeroelastic studies
improve performance. Control of aeroelasticity that have occurred during the past few decades.
depends on the continued development of new I