F-111 Fighter Jet Wing Design

Service: Materials Design
Keywords: Signature Project

SGH collaborated with General Dynamics and Industrial Tectonics, Inc. on the conceptual design of the wing pivot for the F-111 tactical fighter. SGH then performed a comprehensive theoretical and experimental stress analysis of the final design.

Scope | Solutions

  • Developed a finite element computer program to analyze thick shell, thin shell, and stressed-skin structures idealized as systems of inter-connected membrane elements.
  • Used photo-elastic frozen stress technique to investigate critical stresses and stress gradient and compare to FEM results.
  • Used the computer program to analyze the stresses in the design of the pivot fitting, pin, bearing system and fuselage carry-through structure, and to permit optimum redesign.