Flutter of pairs of aerodynamically interfering delta wings.To examine the effect on flutter of the aerodynamic interference between pairs of closely spaced delta wings, several structurally uncoupled 1/80th-scale models were studied by experiment and analysis. Flutter test boundaries obtained in NASA Langley's 26-in. transonic blowdown wind tunnel were compared with subsonic analytical results generated using the doublet lattice method. Trends for several combinations of vertical and longitudinal wing separation were determined, showing flutter speed significantly affected in the closely spaced configurations. A new flutter mechanism coupling one wing's first bending mode with the other wing's first torsion mode was predicted and observed.
Document ID
19730040743
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chipman, R. R.
Rauch, F. J. (Grumman Aerospace Corp. Bethpage, N.Y., United States)
Hess, R. W. (NASA Langley Research Center Hampton, Va., United States)
Date Acquired
August 7, 2013
Publication Date
March 1, 1973
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 73-314
Meeting Information
Meeting: Dynamics Specialists Conference
Location: Williamsburg, VA
Start Date: March 19, 1973
End Date: March 20, 1973
Sponsors: American Institute of Aeronautics and Astronautics