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The Influence of the Aerodynamic Span Effect on the Magnitude of the Torsional-divergence Velocity and on the Shape of the Corresponding Deflection ModeA procedure which takes into account the aerodynamic span effect is given for the determination of the torsional-divergence velocities of monoplanes. The explicit solutions obtained in several cases indicate that the aerodynamic span effect may increase the divergence velocities found by means of the section-force theory by as much as 17 to 40 percent. It is found that the magnitude of the effect increases with increasing degree of stiffness taper and decreases with increasing degree of chord taper. By a slight extension of the present method it is possible to analyze the elastic deformations of wings, and the resultant lift distributions, before torsional divergence occurs.
Document ID
19930084742
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Hildebrand, Francis B (Massachusetts Institute of Technology)
Reissner, Eric (Massachusetts Institute of Technology)
Date Acquired
September 6, 2013
Publication Date
January 1, 1944
Report/Patent Number
NACA-TN-926
Accession Number
93R14032
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
MONOPLANES
WINGS, TAPERED
THEORIES - AIRFOILS LIFTING-LINE
WINGS - DEFLECTION
LIFT DISTRIBUTION, WING-SPAN
FLUTTER - WINGS
THEORIES - WINGS TWISTED
THEORIES - WINGS

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