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F-104 Wing Structure Design Using FEA William VonHagen (AE, Class of 2009)
Dan Galbraith (AE, Class of 2009)
Lockheed F-104 Starfighter in flight (Only tip tanks are attached)
Finite element model of the F-104 Starfighter wing showing final materials, thicknesses, and root constraints
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Static von Mises stress contour in the Aluminum 7075 components at 8g wing loading
Static von Mises stress contour in the Titanium components at 8g wing loading
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Stress contour of starboard wing at 8g wing load– isometric view
Stress contour of starboard wing at 8g wing load – top view
Stress contour of starboard wing at 8g wing load – bottom view
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Mode #1 of the tip + mid-span tanks configuration (15.95 Hz, pylon mount bending)
Mode #3 of the tip + mid-span tanks configuration (28.78 Hz, wing torsion)
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Mode #2 of the mid-span tank configuration (31.20 Hz, pylon mount twisting)
Mode #3 of the mid-span tank configuration (38.62 Hz, wing torsion + tank deformation)
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Mode #1 of the no tanks configuration (59.76 Hz, wing cantilever mode)
Mode #3 of the no tanks configuration (125.70 Hz, wing torsion)