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Spars Wing Structures Aerospace Structures Function of spars - PowerPoint PPT Presentation

Spars Wing Structures Aerospace Structures Function of spars Aerodynamic forces (Lift) create Carry wing bending loads bending Spar Function The basic form is the I-beam. The spar consists of Spar caps/girders (flanges)


  1. Spars Wing Structures Aerospace Structures

  2. Function of spars Aerodynamic forces (Lift) create Carry wing bending loads bending

  3. Spar Function The basic form is the I-beam. • • The spar consists of • Spar caps/girders (flanges) • Web (plate) The web performs the diagonal • function

  4. Bending deformation Assume: wing clamped 4 1 @1 - little deformation @4 - strong deformation 4 1 Solutions: • Diagonal elements • Or better: sheets

  5. Spar Lay-Out auxiliary spar false spar 3 spars

  6. Spar Design The forces are greater at the root Þ the spar must be thicker (difficult with extruded spar caps) Solution: Built up adhesive bonded sheet metal

  7. Spar types

  8. Built-up Spars: Extrusion

  9. Built-up Spars: Sheet Metal Forming

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